Mercedes-Benz CL600 2011

Mercedes CL600 2011, an epitome of luxury coupes, was announced at the Paris Auto Show 2010. The CL600 2011 features 510hp 12-cylinder biturbo engine which aids the luxury coupe to accelerate from a standstill to 60 mph in an impressive 4.5 seconds. Check out the car pictures after the jump.

Mercedes Benz CL600 2011

The Restyled Mercedes-Benz CL-Class

The epitome of luxury coupes

With a design perfected through the greatest sense of style, exclusive appointments and cutting-edge technology, the extensively updated 2011 Mercedes-Benz CL-Class reinforces its claim to supremacy as the ultimate in automotive refinement. The entirely redesigned 429 hp. V8 biturbo engine of the CL550 4MATIC and the 536 hp. AMG V8 biturbo of the CL63 AMG open a new dimension of performance in the luxury coupé category. Performance and fuel economy improve thanks to the newly-developed BlueDIRECT technology with third-generation spray-guided direct injection as well as energy-efficient control of alternator, fuel pump, air-conditioning compressor and power-assisted steering system. In addition, the Mercedes- Benz engineers equipped the CL with state-of-the-art multimedia technology and hand-finished components to help retain its position as the epitome of quality in its class. These two new V8 models, as well as the V12-powered CL600 and CL65 AMG go on-sale in the U.S. in November 2010.

With the new generation of the CL, the Stuttgart-based automaker focuses on fuel consumption and exhaust gas emissions in the exclusive high-end segment. According to Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG: "The CL is the ideal ambassador for our brand. To a special degree it integrates the things that go to make a Mercedes-Benz: fascination, perfection and responsibility. And with the new generation we raise the ante especially in the area of efficiency. But in the realms of design, safety, comfort and performance, too, the CL shows: ahead is where Mercedes is."

A combination of cutting-edge camera and radar-based assistance systems such as the innovative Active Lane Keeping Assist and the Active Blind Spot Assist make the CL a "thinking" partner of the driver. The modified Active Body Control (ABC) with crosswind stabilization system and the Direct-Steer system also contribute to enhancing safety and driving enjoyment.

The 2011 CL63 AMG showcases cutting-edge technology from Affalterbach. The CL63 AMG features the new 5.5-liter V8 biturbo engine with a peak output of 536 hp and 590 lb-ft of torque. With the optional AMG Performance Package, the performance increases to 563 hp and 664 lb-ft. The award-winning AMG SPEEDSHIFT MCT 7--speed sports transmission provides a considerable reduction in fuel consumption and emissions while simultaneously increasing maximum power and torque. With improved fuel economy, the new CL63 AMG is more than 25 percent more efficient than the previous model with a naturally aspirated V8. The exclusive V12-powered CL65 AMG now has even more power, with 621 hp and 738 lb-ft.

The CL63 AMG marks the start of a new chapter in the "AMG Performance 2015" drive strategy: Mercedes-AMG is continuing this impressive story and is meeting its promise to continuously reduce both the fuel consumption and emissions of new models with the new engine/transmission combination and stop/start technology - while also reaching new heights with the central AMG brand value of "performance".

According to Ola Källenius, head of Mercedes-AMG GmbH: "We are heading into a new era with the S63 AMG and CL63 AMG: for the first time we have combined spray-guided direct gasoline injection with biturbocharging and the stop/start system. Together with the AMG SPEEDSHIFT MCT 7-speed sports transmission, we have reduced both fuel consumption and emissions significantly - while at the same time increasing output and torque."

Together with the unique AMG SPEEDSHIFT MCT 7-speed sports transmission, the new AMG 5.5-liter V8 biturbo engine will play a significant role in the Mercedes-AMG model strategy over the coming year. The new engine / transmission combination marks a further milestone in the successful history of Mercedes-AMG, which began back in 1967.

Design: a muscular, self-assured presence

The exterior appearance of the new CL generation is characterized by the dramatic profile of the hood, the dynamic V-shape radiator grille and sweeping headlamps - design details that discreetly but effectively emphasize the car's elegant yet powerful lines.

The front bumper presents a new design with three air intake openings and a chrome trim strip. An LED strip with chrome trim for the daytime running lamps is elegantly integrated into the lower fascia. With standard Bi-Xenon headlights and Adaptive Highbeam Assist, the headlamps offer state-of-the-art illumination technology. The latest LED technology in the turn indicators and position marker lamps round-off the car's advanced look. The rear of the vehicle is characterized by the newly-designed tail lights.

AMG models boast numerous new design features which give the coupé an even more powerful appearance. The new, arrow-shaped hood with its bold ridged design is the perfect match for powerfully-shaped headlamps, as well as AMGspecific LED daytime driving lights in the front apron. The central Mercedes star is flanked by a single horizontal grille slat. The new AMG front apron has an expanded three-dimensional design as well as a lower crossmember with a highgloss black finish.

Other unique AMG highlights include a new rear apron with a diffuser insert and newly-designed chrome twin tailpipes of the AMG sports exhaust system. The front fenders wear "V8 BITURBO" lettering. New 20-inch AMG light-alloy wheels round-out the new look of the CL63 AMG.

New V8 biturbo engine with innovative technology

With its 4,663 cubic centimeters of displacement the new V8 biturbo engine in the 2011 CL550 4MATIC features BlueDIRECT technology and delivers impressive power. The eight-cylinder engine produces 429 hp so that despite 0.8 liters less displacement, it is still around 12 percent more powerful than its predecessor. At the same time, torque was raised to 516 lb-ft - an increase of 32 percent. The CL550 4MATIC requires a mere 4.8 seconds to accelerate from a standstill to 60 mph. In summary, the 2011 CL550 4MATIC is significantly more agile, torquey and fuel efficient than its predecessor.

The BlueDIRECT technology of the V8 biturbo includes an impressive combination of new developments such as third generation spray-guided direct gasoline injection with piezo injectors and multi-spark ignition with up to four ignition sparks within a millisecond.

The CL600, with its 510hp 12-cylinder biturbo engine, accelerates the luxury coupe from a standstill to 60 mph in an impressive 4.5 seconds.

The new AMG V8 engine, designated internally as the M 157, also takes full advantage of these innovative new technologies. The new AMG 5.5-liter engine marks the debut of direct gasoline injection with spray-guided combustion and piezo injectors in an AMG. Other highlights include standard Controlled Efficiency stop/start function. The AMG 5.5-liter V8 biturbo engine develops a peak output of 536 hp and maximum torque of 590 lb-ft. In conjunction with the optional AMG Performance Package these figures are increased to 563 hp and 664 lb-ft.

The CL63 AMG delivers superior, sports car-level performance. Acceleration from 0-60 mph takes just 4.4 seconds, and has an electronically limited top speed of 155. With the optional AMG Performance Package, 0-60 takes just 4.3 seconds and top speed increases to an electronically limited 186 mph.

The V12-powered CL65 AMG produces 621 hp and 738 lb-ft of torque, and achieves a 0-60 mph time of 4.3 seconds.

Transmission: combining maximum driving pleasure with low fuel consumption

The new engine in the CL550 4MATIC is mated to a seven-speed automatic transmission which has undergone significant revision, while V12 models retain the proven five-speed automatic transmission due to their extremely high torque at low engine speeds. The DIRECT-SELECT lever on the steering column enables the driver to select "P", "N", "R" and "D" by nudging the selector. The operating commands are transferred electronically by wire.

In addition, a switch on the center console allows the driver to choose between the driving modes "Sport" (S) and "Economy" (E), which alter the transmission characteristics.

* Economy: the automatic transmission changes gears at low revs; in this mode the CL starts-off in second gear.
* Sport: the automatic transmission makes the most of the engines' speed range when changing gears. At the same time the accelerator characteristics are changed so that the engine responds more spontaneously to the driver's pressure on the accelerator.

Selection of the transmission mode is independent of the spring/damper setting of the suspension so that the driver has more control over the overall handling of the luxury coupe.

More efficiency: the new seven-speed automatic transmission

The seven-speed automatic transmission was improved in detail by the Mercedes engineers. The aim was to further reduce converter slip in the connection with the engine and thus optimize efficiency. In addition, the much increased torque of the V8 biturbo engine in the CL550 4MATIC raised new demands on the absorption of cyclic irregularities and vibrations in the transmission. The Mercedes-Benz developers met this challenge in the new transmission with a new torsional vibration damper. It is designed as a double turbo-damper and additionally fitted with a centrifugal pendulum which shifts the mass center of gravity as a function of engine speed and enables comfortable vehicle operation even at lower engine speeds. Moreover, the optimal damping already makes a distinct reduction in the slip of the torque converter lockup clutch at low loads. The result: in ECO mode the engine speed could be reduced, contributing greatly to cut fuel consumption. Plus, it ensures an even quicker response to accelerator commands.

A new hydraulic circuit and optimized torque converter characteristics also help to improve efficiency and performance. A further consumption-cutting measure is a new lower-viscosity automatic transmission fluid (ATF), which has a longer life yet the same cooling performance. As a result, the CL550 4MATIC only needs a transmission fluid change every 78,000 miles.

The optimized electrohydraulic control unit of the transmission and new reducedfriction materials in various parts of the transmission in combination with optimized software provide greater shifting comfort.

Power transmission and stop/start function

Intelligent solutions for maximum driving pleasure and low fuel consumption

Seven gears, three driving modes and a rev-matching function: the power transmission of the CL63 AMG provides great emotional appeal and sheer driving pleasure. At the same time the AMG SPEEDSHIFT MCT 7-speed sports transmission provides a considerable improvement in fuel economy - and specifically in combination with the new Controlled Efficiency driving mode with stop/start function and generator management.

The AMG SPEEDSHIFT MCT 7-speed sports transmission is an innovative power transfer system that made its debut in the high-performance SL63 AMG Roadster in 2008, and has also been in the E63 AMG since summer 2009. It combines the sporty, direct and agile feedback of a manual transmission with the total convenience of an automatic. Featuring seven gears, three driving modes and a rev-matching function, the 7-speed sports transmission offers superb versatility. MCT stands for Multi-Clutch Technology and indicates that only clutch elements are employed to perform gearshifts.

A compact wet start-up clutch, which runs in an oil bath, replaces the conventional torque converter. Thanks to its low rotational inertia, the transmission responds instantaneously and dynamically without the losses typical of a torque converter transmission - thereby helping to save fuel. The AMG sports transmission also impresses with its low weight of just 176 lbs, which has been made possible through the use of lightweight magnesium for the transmission housing. Vibrations are effectively eliminated by a new, two-stage torsion damper, with resulting benefits in perceived passenger comfort.

Consumption-optimized Controlled Efficiency ("C") drive mode

During its development and adaptation to the AMG 5.5-liter V8 biturbo engine, the AMG engineers paid special attention to the new Controlled Efficiency ("C") driving mode. The emphasis was on delivering minimum engine speed coupled with a reduced number of gearshifts in all driving situations. When moving-off in "C", the MCT transmission always selects second gear and shifts noticeably early to the next higher gears if the driving style permits. At 37 mph for instance, sixth gear will already be engaged - not only improving fuel consumption but also noise levels. Thanks to its powerful, readily available torque even at low engine speeds, the AMG V8 biturbo unit is absolutely ideal for this style of driving. Controlled Efficiency also means convenient gearshifts and a "soft" accelerator response set-up for outstandingly smooth power transfer.

Controlled Efficiency stop/start function as a new feature

The Controlled Efficiency stop/start function is also being used for the first time in an AMG model. This system is standard equipment on the CL63 AMG and permanently active in the fuel economy driving mode "C". Once the driver comes to a stop e.g. at a red traffic light, the engine is automatically switched off. Once the brake pedal is released or the accelerator is depressed, the engine is immediately restarted and the car is able to move off quickly. Intelligent technology guarantees a comfortable and immediate starting procedure: a crankshaft sensor recognizes the direction of rotation and registers the resting position of all eight pistons. For an automatic engine start, the cylinder with the most favorable piston position receives an injection of fuel into its combustion chamber. The precise piezo-electric injectors greatly assist this process, as they make especially fast starts possible.

The engine management ensures that the engine is only switched off if certain preconditions are met. The starter battery must have sufficient charge, for example, and the engine must be at the necessary operating temperature for efficient emissions control. The same applies to the interior temperature selected by the driver: if this has not yet been reached, the engine is not switched off when the car comes to a stop. The onboard network management system makes sure that active audio, telephone or video functions are not interrupted by the stop/start function.

A green "ECO" symbol in the AMG main menu shows the driver that the Controlled Efficiency stop/start function is active. Should one of the above criteria prevent activation of the system, this is shown in the central display by the message "Stop/start inactive" and a yellow "ECO" symbol. In the two more performance-oriented driving modes "S" (Sport) and "M" (Manual), the stop/start function is always deactivated. If required, the driver can also switch it off while in "C" mode.

The eight-cylinder biturbo engine also features the generator management system familiar from the E63 AMG: whenever the engine is on the overrun or when braking, kinetic energy is used to charge the battery rather than being wasted as heat in the usual way. In all other operating modes a combination of onboard network and generator management enables the generator to be kept at a low voltage. This reduces the load on the engine and increases fuel economy.

Drive modes "S" and "M" for even more driving pleasure and performance

The engine and transmission are even more agile in the "S" (Sport) mode. Accelerator pedal movements trigger a more direct traction response, making the downshifts more spontaneous. The engine speed is allowed to reach a higher level in each gear, while the gearshifts are around 25 percent faster than in "C". In the manual shift mode "M", gearshifts at full throttle take just 100 milliseconds, a reduction of 50 percent compared to "C". In "S" and "M" modes, the engine management system partially suppresses the cylinders: interrupting ignition and injection under full load leads to even faster gearshifts than before.

Ultra-fast, spontaneous multiple downshifts are another strength of the AMG SPEEDSHIFT MCT 7-speed sports transmission. For instance, kickdown allows gearshifts straight from seventh down to fourth gear, or from fifth to second. In the "S" and "M" driving modes the automatic rev-matching function is active. Every manual or automatic downshift is accompanied by precisely metered engine revs - incrementally from "S" to "M". This not only adds to the driver's emotional experience, but the load-free downshift minimizes load-change reactions, which is particularly helpful when braking into bends - and also enhances safety in slippery conditions.

No automatic downshifts in manual "M" mode

In manual "M" mode the driver also benefits from the high torque of the V8 biturbo engine, as there is no automatic downshift under full load and kickdown. The transmission remains steadfastly in the selected gear and does not perform an automatic upshift in manual mode even when the rev limit is reached. In "M" mode the AMG instrument cluster displays the current gear and alerts the driver to upshift by means of a red "up" symbol just before the needle reaches the red zone. When approaching the lower rev limit, e.g. when braking, there is an automatic downshift to the next lower gear.

The gears can be shifted using the shift paddles - no matter the driving mode. The electronic key for selection of the three driving models is located to the left of the COMAND controller. The powerful electronic transmission control unit with its integrated 80 MHz processor provides immediate downshifts - for example when approaching traffic lights or if the driver requires fast acceleration when overtaking.

A unique combination of driver-assistance systems

With state-of-the-art assistance and protection systems the 2011 CL-Class affirms its status as an automotive masterwork and technology platform. The attentive assistants turn the car into an "intelligent" partner which is able to "see", "feel", respond "instinctively" to danger and act "on its own initiative" in order to avoid accidents or reduce their severity. The trailblazing driver assistance systems in the 2011 CL-Class are based on cutting-edge radar, camera and sensor technology. Celebrating its premiere on the 2011 CL-Class, the optional Active Lane Keeping Assist (standard on V12 models) monitors lane markings and if the vehicle threatens to cross a dashed line the system actuates an electric motor in the steering wheel, causing it to vibrate briefly - giving the driver a discreet but effective warning to countersteer immediately. If the coupe unintentionally crosses a solid line, the system intervenes by gently braking the wheels of the opposite side of the car, helping the driver to stay in the lane. Active Lane Keeping Assist works through the existing Electronic Stability Program ESP®.

Active Lane-Keeping Assist evaluates information provided by a camera mounted on the inside of the windshield which identifies the contrast between the road surface and the lane markings. In addition, the radar system scans the side of the roadway for crash barriers and other roadway edge markings. This Mercedes assistance system also evaluates the driver's actions and can reliably determine whether the car is departing from the lane intentionally or not. Consequently, there is no warning if the driver accelerates hard just before overtaking, when merging onto a highway, braking hard or steering into a curve.

Targeted brake actuation: Active Blind Spot Assist

Another component of the optional Driver Assistance Package (standard on V12 models) is Active Blind Spot Assist, a system that uses a multi-stage warning concept. If it detects that a change of lane would be too dangerous, it warns the driver by displaying a red triangle in the glass of the exterior mirror. Close-range radar sensors monitor the area immediately to the side and to the rear of the car. If the driver disregards this warning and, for example, actuates the turn indicator, an audible warning also sounds. If the driver continues to ignore the warnings and comes dangerously close to a vehicle in the neighboring lane, corrective braking intervention via ESP® is applied to the wheels of the opposite side of the vehicle. This causes a yaw movement about the car's vertical axis due to the unequal distribution of braking forces. If, despite this course correction, an accident cannot be avoided the Active Blind Spot Assist system reduces the consequences of a collision.

Assistants to see and be seen better

Adaptive Highbeam Assist is another standard system on the 2011 CL-Class. This camera-based system can recognize oncoming vehicles or vehicles ahead with their lights on, and then controls the headlamps to ensure the best possible beam range without dazzling other drivers. In addition, Mercedes-Benz offers the Night View Assist Plus system, featuring a special infrared camera for pedestrian detection: as soon as the system detects pedestrians on the road ahead, they are highlighted additionally in the display in order to better catch the driver's attention.

An "electronic crumple zone": the PRE-SAFE® Brake

Mercedes-Benz offers another radar-based system as a component of the optional Driver Assistance Package (standard on V12 models) - PRE-SAFE® Brake. If the driver is distracted and fails to recognize the imminent danger of a rear-end collision, this system can intervene and brake the vehicle independently. If the driver fails to react even after automatic, partial braking action, this latest version of the PRE-SAFE® Brake activates maximum braking pressure around 0.6 seconds before what is now an unavoidable collision. This emergency braking action can significantly mitigate the severity of the impact. The PRE-SAFE® Brake thus acts as a kind of "electronic crumple zone".

Warns driver of drowsiness: ATTENTION ASSIST

Drowsiness is one of the most common causes of accidents. According to the National Sleep Foundation, fifty-four percent of motorists have driven while drowsy at least once in the past year, and 28 percent do so at least once per month. This is why Mercedes experts have developed the ATTENTION ASSIST system which forms part of the standard equipment of the 2011 CL-Class. The system continuously evaluates more than 70 different parameters in order to identify driver drowsiness and provide a warning before the dangerous microsleep phase begins. Observing the driver's steering behavior has proved to be an especially strong indicator: several years of practical research by Mercedes-Benz has shown that drowsy drivers make minor steering errors which they often correct very rapidly in a characteristic way. This steering behavior is recognized by a special steering angle sensor. Observing the driver's eyes cannot always provide conclusive evidence of sleep since many drivers can experience microsleep with their eyes open.

Active Body Control reduces the effect of a crosswind

The 2011 CL also meets the highest standards in terms of driving dynamics and agility thanks to Direct-Steer, with a steering ratio that varies with the steering angle, and modified Active Body Control (ABC) with crosswind stabilization (standard for the CL600 and AMG models). This latest stage in active suspension development modifies the wheel load distribution via the ABC spring struts within milliseconds, depending on crosswind direction and intensity, to the extent that it can largely compensate the effects of the crosswind.

The Active Body Control was debuted by Mercedes-Benz in an earlier generation of the CL coupe, the C215 model series in 1999. ABC is unique worldwide as it not only regulates roll, but pitching and squatting movements as well, creating a perfect harmony of comfort and handling stability. Since the introduction of this innovative system, engineers in Sindelfingen have continuously improved on it, so that eleven years later it still marks the peak of automotive engineering. In addition to crosswind stabilization, the latest version the active suspension features a new energy-optimized hydraulic pump that takes part of the burden off the engine, contributing towards reducing fuel consumption.

Additional safety and agility at the physical limits is provided by the standard Torque Vectoring Brake - targeted, one-sided braking intervention at the inside rear wheel when cornering. This enables the luxury coupe to turn into a bend under precise control with even greater agility.

Interior: carefully selected materials and first-class finish

Mercedes-Benz developers and designers perfected the CL interior paying careful attention to detail. A total of four different kinds of trim open up the possibilities for perfectly matched material and color concepts according to personal taste: apart from dark high-gloss burl walnut, there is also black ash wood. Twelve cylinder models additionally offer high-gloss poplar and both AMG models have Carbon Fiber trim available. Important to note - consistent with the corporate philosophy of sustainability at Mercedes-Benz, the CL uses only European wood from renewable forestry sources. Most of the wood parts are hand-made and matched individually for color and grain by experienced craftsmen.

The seats of the CL are of the most exquisite quality, made with low pretensioning they appear supple and comfortable from the very first glance. There is a choice of Premium leathers on the V8 CL550 4MATIC and CL63 AMG. The V12 CL600 and CL65 AMG feature Exclusive leather.

The multifunction steering wheel of the CL has also been modified by the Mercedes-Benz designers: the rim and airbag module are lined with soft premium leather as standard. The new, flatter airbag module also lends a sporty touch to the multifunction steering wheel covered in leather sewn with sophisticated double stitching.

Apart from this, Mercedes-Benz makes more use of light as a styling element in the vehicle interior. Standard ambient lighting offers a choice between three lighting moods: solar (amber), neutral (white) and polar (ice-blue).

Sporty interior with exclusive appointment details

The CL63 AMG boasts an additional amount of unique appointment details. The AMG instrument cluster now displays the words "AMG V8 BITURBO" on the screen after opening the driver's door - a clear invitation to start the new eight-cylinder engine. Also new is the AMG sports steering wheel with silver-colored aluminum shift paddles, specially shaped grip area and perforated premium leather around the steering wheel spokes. The multifunction buttons on the left and right enable the driver to select numerous settings and access information in the AMG main menu. The driver can view the current transmission mode in the middle of the instrument cluster - the currently engaged gear and recommended upshifts are also shown in "M" mode. A new feature is the Controlled Efficiency stop/start function: a green "ECO" symbol in the AMG main menu tells the driver that it is enabled, while a yellow "ECO" symbol indicates that the "stop/start function is disabled".

The AMG main menu also provides the driver with information about the temperature of the engine oil and coolant. With the RACETIMER, the driver can calculate lap times when on a private racing circuit, for instance. The RACETIMER records the time for the fastest lap, the average and maximum speeds and the lap distance. The AMG instrument cluster in the CL63 AMG comes with a 220 mph speedometer scale. One of the most eye-catching features in the interior is the exclusive analog clock with its "IWC Ingenieur" design in the center console.

AMG sports seats with exclusive leather upholstery

Standard equipment on the AMG coupes include 14-way electrically adjustable AMG sports seats with heating, ventilation and memory. Optionally available on the CL63 (standard on the CL65) are active multicontour seats including massage and Drive Dynamic functions. The leather upholstery boasts sporty, AMG-specific seat fluting and also high-quality AMG badges in the backrests.

Onboard infotainment: the most advanced multimedia technology

Consistent with its serene character and technological masterwork, the 2011 CL also sets the standard where onboard infotainment is concerned. The newest option available is the optional SPLITVIEW technology for the COMAND system. This innovative display allows the driver and front passenger to view different contents simultaneously on the same screen. While the driver, for example, uses the map-based navigation system, the front passenger can watch a movie on DVD.

The standard COMAND control and display system with Bluetooth®, USB and SD card interfaces offers customers the possibility of integrating their stored data with the vehicle. A standard Media Interface for mobile audio and video devices such as an iPod® is integrated into the glove compartment. The standard navigation system features nationwide navigation and a detailed three-dimension map display with data stored on a 40-gigabyte hard disc, facilitating extremely rapid route calculation. For musical entertainment COMAND provides SIRIUS and HD radio, a 6-disc CD/DVD player with MP3 capability, an equalizer with speed-dependent volume control and the MUSIC REGISTER with a 7.2 gigabyte hard disc which stores around 2500 digital music files in MP3, AAC or WMA format (which can be conveniently transferred to the REGISTER from PC memory cards). The system recognizes music files played on CD, DVD or from the MUSIC REGISTER using its stored Gracenote® database, and shows the title, album and performer in the color display.

Standard equipment also includes the latest-generation of Voice Control which operates the navigation, telephone and audio devices via whole-word input. The driver no longer needs to spell out his commands but simply speaks whole words when entering a destination or choosing a radio station or a music title from the MUSIC REGISTER, or when calling up a name from the phone book.

The further developed surround sound system with Discrete Logic7® technology developed by Mercedes-Benz together with audio specialists Harman Kardon® delivers an outstanding performance with a 360-degree musical experience.

The V12 Coupes: The pinnacle of driving refinement

Mercedes-Benz stylishly underlines the exceptional status of the twelve-cylinder CL600 with numerous distinguishing features in the exterior and interior. In addition to the model-specific radiator grille with two twin louvers, these include the V12 emblem on the front fenders, model-specific 19-inch multispoke wheels and a large range of standard equipment.

CL600: high-performance engine with twin turbochargers

The flagship model remains the CL600 with its 510 hp twelve-cylinder biturbo engine, which accelerates the luxury coupe from a standstill to 60 mph in impressive 4.5 seconds. Maximum torque is 612 lb-ft at 1,800 rpm, which makes the 5.5-litre engine one of the world's most powerful series-production car engines. The V12 combines its impressive performance potential with exemplary smoothness and quiet running, ideal for refined and enjoyable travel.

The crankcase of the twelve-cylinder engine is made from diecast aluminum, while diecast magnesium is used for the cylinder-head covers. The engine uses lightweight components such as fracture-split ("cracked") connecting rods made from high-strength forged-steel alloy, pistons made from a high-quality aluminum alloy, hollow camshafts of induction-hardened forged steel, a weight-optimized forged-steel crankshaft and a diecast aluminum sump.

The turbines of the two turbochargers are integrated into the exhaust manifolds on both sides to save space, and are in the best position for high efficiency. The compressed air flows through two close-coupled water intercoolers on the cylinder head covers. Depending on the engine load the air is cooled by up to 212 degrees Fahrenheit, achieving just the right temperature and density for the combustion process.

CL65 AMG: Dream car with exclusive V12 performance

The powerful AMG V12 engine and exquisite appointments of the CL65 AMG serve to stir the emotions of automotive enthusiasts. Among engine specialists and car enthusiasts, a twelve-cylinder engine has always represented the crowning glory of the engine builders' craft. A very special example of this luxurious engine series is the AMG 6.0-litre V12 biturbo engine, as used in the CL65 AMG. Just one glimpse of the engine specifications is enough to reveal why: with a displacement of 5980 cubic centimeters, the AMG V12 generates 621 hp at 4800 rpm. The maximum torque of 738 lb-ft. has been electronically limited - from a possible 885 lb-ft - to make allowances for the powertrain, and remains constant between 2300 and 4300 rpm.

The performance is evidence of the exceptional power: the AMG V12 models accelerate from 0 to 60 mph in just 4.3 seconds, and are capable of hitting a top speed of 186 mph (electronically limited).

AMG has made a number of additional detailed enhancements to the AMG 6.0-litre V12 biturbo engine for the new model year. The engine experts at AMG achieved the increase in output from 604 hp to 621 hp thanks to new exhaust gas turbochargers. The inlet diameter of the compressor housing and also the exhaust gas ducts have been enlarged, and the resulting increase in air throughput, together with the new engine electronics, has resulted in an increase of 17 hp. The maximum charge-air pressure is 22 psi.

Despite the increase in output, it has still been possible to reduce fuel consumption and exhaust emissions. The reduction in fuel consumption is achieved thanks to the new engine electronics and generator management. The kinetic energy generated during driving and also when braking is used to charge the battery, and not just left to generate heat as would otherwise be the case. In all other operating areas, management of both the on-board electrical system and generator enables the generator to be maintained at a low voltage level.

New piston rings, a modified oil pump and use of a superior coating on the catalytic converters also contribute towards reducing raw exhaust emissions. As a result, the CL65 AMG immediately fulfill all of the requirements of the US market (LEV II standard, on-board diagnostics II and lambda sensor diagnostics).

Since its debut in 2003, the AMG 6.0-litre V12 biturbo engine has ranked as one of the most powerful series production engines ever built. The exciting sound emitted by the two chrome twin tailpipes of the AMG sports exhaust system changes according to the driving style and situation: the repertoire ranges from a smooth, refined tone, through to the sonorous AMG-typical twelve-cylinder sound, all of which adds to the intensity of the high-performance driving experience.

Know-how from the world of motorsport also with the AMG biturbo V12 engine

One of the characteristic features of the biturbo engine is the sophisticated air/water intercooler. It guarantees high power and torque output under all operating conditions, regardless of the outside temperature. Traditionally all engines are built by hand at Mercedes-AMG in Affalterbach according to the philosophy "one man, one engine" - this is also true of the V12 engine. In line with the exceptional 738 lb-ft of torque, the coupe comes with a reinforced powertrain. Power transfer is handled by the AMG SPEEDSHIFT five-speed automatic transmission, which has three different drive modes.

A further increase in active and passive safety

Reliable deceleration performance comes courtesy of the AMG high-performance braking system based on the ADAPTIVE BRAKE system. Internally ventilated, perforated composite brake discs all around, with a diameter of 15.4-inches and 14.4-inches respectively, are combined with double floating brake calipers (front) and sliding frame-type calipers (rear) for maximum deceleration.

To enhance active and passive safety, the range of trend-setting camera and radarbased driver assistance systems has also been extended further. The CL65 AMG now includes Active Lane Keeping Assist and Active Blind Spot Assist as standard equipment.

New design for CL65 AMG with even higher status

The new CL65 AMG now features an even more exclusive appearance than ever before. An enhanced status is guaranteed thanks to the swept-back front section with profiled hood, the enlarged, more angled radiator grille and the powerful headlamps. Included as standard equipment are bi-xenon headlamps, Adaptive Highbeam Assist and AMG-specific LED daytime running lights in the front apron. The larger, chrome-trimmed cooling-air intake adorns a distinctive horizontal grille slat. The newly designed AMG bodystyling is easily recognizable thanks to the distinctive v-shape and the chrome-trimmed lower cross strut. This is matched by the AMG rear apron which boasts a chrome diffuser insert. Another visual highlight is the AMG sports exhaust system with two chrome twin tailpipes featuring a V12 design.

When viewing the vehicle from the side, enthusiasts will note the "V12 BITURBO" lettering on the front fenders and the AMG double-spoke forged wheels, painted titanium grey and with a high-sheen finish.

Exclusive leather upholstery with an AMG V12 diamond pattern design

The exclusive position held by the CL65 AMG within the AMG model range is also highlighted by the vehicle's exquisite interior appointments. Exclusive leather upholstery with its distinctive AMG V12 diamond pattern design covers all four seats as well as the door center panels. Premium leather also covers the entire instrument panel and seatback panels, but also the magazine pockets and the parcel shelf.

Alcantara® is used on the headliner and also on the A and C-pillars. The AMG sports seats, which can be adjusted into many different positions, feature their own unique upholstery layout as well as active ventilation and heating, active multicontour front seats with massage and dynamic functions and NECK-PRO luxury head restraints.

New additions in the interior include the AMG sports steering wheel with aluminum shift paddles and perforated premium leather in the grip area. The latest information and entertainment comes courtesy of the standard COMAND multimedia system including Harman Kardon® Logic 7® surround sound system with available SPLITVIEW - which divides the screen into different displays based on viewing angle.

The AMG instrument cluster displays "AMG V12 BITURBO" start screen and a 220 mph speedometer scale. Integrated into the AMG main menu is a gear indicator including upshift recommendation, and the driver is also kept informed about engine oil and coolant temperatures. Thanks to the RACETIMER, lap times can be displayed, when on a race track for example.

A particular highlight of the interior is the exclusive analogue clock with IWC design. High-gloss poplar wood trim elements, reserved exclusively for the V12 models, complete the interior look.

Tradition: an exclusive line of ancestors

The 2011 CL-Class continues the great tradition of Mercedes-Benz coupes, which reaches back to the legendary supercharged cars of the 1920s and '30s. Since the 1950s, in particular, the three-pointed star has produced an uninterrupted series of exclusive two-door cars which combine sophisticated design with trailblazing technology - every model an automotive classic. The W188 model series 300 S Coupé which entered series production in 1952 marked the beginning. A contemporary report called it the "measure of what it is possible to achieve in automotive engineering".

This statement has remained true for all subsequent models, right down to the current generation, because the luxury coupes from Mercedes-Benz featured timeless design, the highest level of comfort and trailblazing innovations in automotive technology. The 1961 220 SE Coupé was the first series-production Mercedes-Benz to be equipped with disc brakes. In 1995 the Electronic Stability Program ESP® celebrated its world premiere in the S600 Coupe and in 1999 the Active Body Control suspension system was introduced for the first time in the CLClass. PRE-SAFE® brake was another technological innovation that made its debut in a large Mercedes-Benz coupé. Now the 2011 CL-Class debuts Active Lane Keeping Assist and Active Blind Spot Assist which will help prevent accidents or reduce their severity.

The 2011 CL-Class goes on sale in the U.S. in November 2010.

The large coupes from Mercedes-Benz

Dream cars and technical trendsetters

* Long history of manufacturing premium two-door cars
* Exclusive trendsetter in automotive development

The large coupes from Mercedes-Benz combine utmost exclusivity and ambitious design with trailblazing high-end technology. Building prestigious automobiles with a performance edge to meet the most exacting requirements was a carefully and intensely cultivated tradition at Mercedes-Benz at the beginning of the 20th century. For example, very rare coupe versions of Mercedes supercharged cars were produced in the 1920s and 1930s.

The luxury coupes were never mere variants of the sedans, but a clearly individual line within the model ranges. They also presented pioneering innovations in automotive technology. The 1961 220 SEb Coupé, for instance, was the first Mercedes production model to feature disc brakes. The Electronic Stability Program ESP® had its world premiere in the S600 Coupé in 1995; the Active Body Control suspension system, in 1999 in the CL. In 2006 the PRE-SAFE® Brake, another technical innovation, debuted in a large Mercedes coupe. But aside from all such technical refinements, Mercedes coupes primarily awaken emotions. Their dramatic appearance makes a bold statement. In short, Mercedes coupes have always been dream cars of the special kind - every one of them a classic.

1952: back in the elite class with the 300 S Coupé

Mercedes-Benz returned to the tradition of the pre-war coupes in October 1951, presenting the 300 S Coupé, the luxury-class coupé of the W 188 series, at the Paris Motor Show. General enthusiasm prevailed and the trade press was exuberant, speaking of a "world-class car". But the international public also was surprised since no one expected that a German motor manufacturer, virtually starting from nothing, could manage the transition from the post-war economy of shortages to the smooth production of exclusive luxury vehicles.

The 300 S Coupé that went into production in 1952 captivated viewers with the curves of its fenders and its long hood. These stylistic elements represented "traditional and in this case especially finely shaped lines," as one contemporary commented. The refined coupé with its six-cylinder in-line engine developed 150 hp, enabling a top speed of 109 mph. "Able to cover longest distances in the shortest time with the least possible strain on body and nerves" was the message sent out to the coupé clientele, which included the American film stars Gary Cooper and Errol Flynn.

In 1955 Mercedes-Benz already presented the redesigned 300 Sc Coupé. Direct gasoline injection instead of a carburetor made engine output climb to 175 hp. In addition, from the 300 Sedan the new coupé adopted the single-joint swing axle, which further enhanced ride comfort. The fortunate combination of peak performance and handling safety with absolute elegance and quality was regarded by experts in those days as the "measure of what it is possible to achieve in automotive engineering". This judgment holds good to this day.

Between 1951 and 1958 only 314 units of the coupes of the ultra-exclusive W 188 model series were built. The small volume can be traced to the still relatively small market at that time. But the few post-war coupes still preserved today are some of the most sought-after collector's items and trade in the highest categories at auctions.

1956: the Ponton Coupé debuts

Ambitious design, trailblazing engineering and pleasurable motoring also merged to form a unified whole in the 220 S Coupé of the W 180 model series introduced in 1956. Like the 220 S Cabriolet this two-door car was based on the 220 S Sedan. All three body variants feature the characteristic pontoon-like integrated-design body with smooth sides and no mounted fenders or running boards. Quickly they got the name "Ponton-Mercedes", a standing expression in the history of the automobile even today. Chrome-plated bumpers and foglamps lent the face of this coupé its character. For the first time a Mercedes-Benz coupé had a selfsupporting body solidly welded to the frame-floor unit.

The 220 S Coupé originally came with a 100 hp in-line six-cylinder engine. A short time later the Mercedes engineers increased the engine output to 106 hp. An improved front suspension made for increased ride comfort, as did the singlejoint swing axle with low pivot point. As an optional extra for a price of 450 marks, from 1957 the customer could get a hydraulic-automatic clutch called "Hydrak".

The interior appointments were very up-market. The coupé came, for example, with polished fine wood trim for the instruments and leather upholstery as well as a stationary fan for the heating and ventilating unit. Contemporary press people described the coupé as a unity of "modern engineering and functional elegance". To boost performance, from September 1958 Mercedes-Benz offered the 220 SE of the W 128 model series with direct gasoline injection for 1900 marks; it raised output to 115 hp. The last variants built had 120 hp.

Mercedes-Benz manufactured a total of 2,081 units of the "Ponton" coupes 220 S and 220 SE. They too are much sought-after collectors' items today.

1961: styling and safety milestone

At the ceremonial opening of the museum at the Untertürkheim plant on February 24, 1961 Mercedes-Benz presented the 220 SEb Coupé. Its design and styling took their cue from the 220 SEb "Tailfin Sedan", so it was also assigned to the 111 series. On the full-length version of the 111 series frame-floor unit a fully fledged four-seater was created. Engine, suspension and the safety body principle were borrowed from the Sedan. The only major difference was at the same time a special technical feature: the 220 SEb Coupé was the first Mercedes-Benz production car to have disc brakes on the front wheels. It also had a padded steering wheel, 3-point seat belts and a new type of wedge-pin door lock that prevented the doors from bursting open in a collision. A little later the 300 SE Coupé with 160 hp, a member of the 112 series, debuted at the Geneva Motor Show. Its standard equipment included a four-speed automatic transmission, air suspension and power-assisted steering.

A 120 hp six-cylinder served as drive for the 220 SEb Coupé. When production of the tailfin Sedan came to an end in 1965, the Coupé remained in the sales range along with the Cabriolet. However, the 2.2-litre engine was replaced by a 2.5-litre unit with 150 hp and the model designation became 250 SE Coupé. In January 1968 the 280 SE Coupé with a newly developed six-cylinder engine with a displacement of 2.8 liters and 160 hp replaced the 250 SE Coupé. At the same time the 3.0-litre variant was taken out of the line-up. In September 1969 a V8 engine with 200 hp debuted in the 280 SE 3.5 Coupé as harbinger of a new engine generation.

The Mercedes-Benz coupes proved ideal for the growing clientele of professional high-mileage drivers. The consequence: more than ten times as many coupes from the W 111 and W 112 model series were produced as from the previous "Ponton" series - exactly 28,918 units.

1971: safety is the agenda

In October 1971 Mercedes-Benz presented the 350 SLC of the next coupé generation at the Paris Motor Show. Unlike its predecessors, this model was not based on a luxury-class sedan, but shared the technical platform of the 350 SL Roadster. Apart from the fixed roof of the SLC, both 107 series variants were identical up to the rear edge of the door. The differences showed in the rear half of the car. A 36 millimeter longer wheelbase permitted designing the SLC as a fully fledged four-seater. Powered by a 200 hp V8, the Coupé also shared a number of safety-related design details with the Roadster. For example, the fuel tank was fitted above the rear axle for collision protection. In the interior the heavily padded dashboard, deformable or recessed switches and levers and the new four-spoke safety steering wheel with impact absorber made for greatest possible impact protection. The large tail lights remained free of soiling due to their ribbed surface.

From April 1973, a second V8 engine with a displacement of 4.5 liters and 225 hp became available in the 450 SLC. A version of this engine with a lowercompression ratio and 195 hp, adapted to the US emission control laws, had been in service since July 1972 in the North American version of the 350 SLC. In July 1974 the six-cylinder 280 SLC with 185 hp was added to the C 107 model range.

In September 1977, at the Frankfurt International Motor Show, Mercedes-Benz presented the 450 SLC 5.0 as new top model. Outstanding innovation: the 5.0-liter light-alloy engine with 240 hp, which later would enjoy a career in the S-Class and the SEC Coupé models. In 1980, in the wake of general model refinement measures the 450 SLC 5.0 became the 500 SLC. The 350 SLC was supplanted by the 380 SLC. Its 3.8-litre aluminum V8 developed 218 hp. In the ten years in which they were built a total of 62,888 coupes of the C 107 series were produced.

1981: concentrated power and agility on the S-Class platform

At the Frankfurt Motor Show in September 1981 the Coupé variants 380 SEC and 500 SEC of the C 126 series were presented. They were again based on the S-Class Sedan now, and not the SL, which between 1971 and 1981 also had been offered as SLC Coupé. The floor assembly was 85 millimeters shorter than in the Sedan. Nevertheless, the SEC Coupes were fully fledged four-seaters. Their design too, with its elegant, harmonious lines, took its cue from the four-door cars, but gave a sense of even more concentrated power and agility.

Of course, the Coupé also complied with the high safety standard of the S-Class Sedan. An interesting piece of equipment was an electrically operated belt feeder that was part of the standard appointments and had the job of bringing the seat belt into the field of view of the driver and front passenger and into a position where they could easily reach it. As optional extras an airbag for the driver and a belt tensioner for the front passenger were available.

V8 engines, thoroughly revised under the "Mercedes-Benz Energy Concept" to reduce fuel consumption and pollutant emissions, ensured dynamic traction. The 380 SEC Coupé developed 204 hp, the 500 SEC Coupé 231 hp. In 1985 a comprehensive package of refinement measures including a discreet facelift brought mainly a restructured engine range. New was the V8 engine with 4.2 liters displacement. The 5.0-liter engine was also modified; it now had an electronic ignition and an electronically-mechanically controlled injection system. The most spectacular new development was the 5.6-liter V8 that delivered 272 hp and even 300 hp in a version with a higher compression ratio (but without catalytic converter).

The fascination that the big new coupé exuded can be clearly seen especially in the figures: 74,060 units of the C 126 model series were built. These coupes, for some fans the "epitome of the touring car", rank among the sought-after Mercedes-Benz "young classics" today.

1992: a first twelve-cylinder

In January 1992 the North American International Auto Show in Detroit provided the stage for the premiere of the new SEC Coupé models of the C 140 series. Initially, Mercedes-Benz offered two variants: the 500 SEC with 320 hp V8 engine and the 600 SEC with a V12 delivering 394 hp. They were based on the S-Class Sedan introduced in 1991. A distinctive design and clear, composed forms with discreet lines of force which exuded performance distinguished the new coupes.

As with its other car models, in June 1993 Mercedes-Benz introduced new model designations for the coupes of the S-Class. The 600 SEC, for instance, became the S600 Coupe. To meet the high demand, in March 1994 the coupé family was broadened with the 279 hp S420 Coupé.

The S600 Coupe featured two fundamental innovations when it appeared: in May 1995 a completely new 5-speed automatic transmission with slip-controlled torque converter lockup clutch was introduced whose sophisticated electronic controls cut fuel consumption. An innovation of even more fundamental significance in historical terms was the Electronic Stability Program ESP®, which supports the driver in critical situations by counteracting an instability-creating force through selective sensor-controlled braking intervention, thus improving handling safety. Since then, ESP® is regarded as proof of future-minded safety engineering in vehicle manufacture and has gained acceptance throughout the industry.

In 1996 the model designations for the coupes were changed once more. Now the model series was dubbed CL, which indicated that the big coupes had set the tone for a whole coupé family. 26,022 units of the C 140 were built.

1999: into the new millennium with pioneering high-end technology

From autumn 1999 the new CL Coupé of the C 215 series went on display in dealer showrooms. Initially there was only the CL500 with V8 engine and 306 hp, to which the 367 hp CL600 with twelve-cylinder engine was added in early 2000. Design, engines and appointments of the CL provided excellent proof of the innovative prowess of the Stuttgart automaker. The long, flat hood, the dynamic tension created by the roof line, the distinctive rear end and the expressive twin headlamps characterized a design that radiated both elegance and sportiness. Dispensing with B-pillars made the basic body appear light.

The standard equipment included a comprehensive safety package with various airbags. A standard feature, unique in the world up until then, was the novel suspension system Active Body Control (ABC); it almost completely compensates for rolling and pitching motions during cornering, on acceleration, and during braking. As standard the twelve-cylinder of the CL600 had an automatic cylinder cut-out function that was also available as an optional extra for the eight-cylinder in the CL500; it reduces fuel consumption in the partial load range. From autumn 2000 the CL55 AMG "F1 Limited Edition" of 55 units was available. It was the first car in the world licensed for road use that had a brake system with ceramic brake discs.

In 2002 a facelift resulted in a discreetly changed front end and rear end. A major innovation was the V12 engine with twin turbochargers in the CL600, which developed 500 hp and delivered maximum torque of 590 lb-ft. From autumn 2002 a supercharged V8 engine with a displacement of 5.5 liters and 355 hp powered the CL55 AMG, and in autumn 2003 the 604 hp CL65 AMG was added; it delivered torque of 738 lb-ft.

With the C 215 model series Mercedes-Benz continued its coupé tradition with undiminished success: through May 2006 48,000 units were built.

2006: new masterwork among the luxury coupes

Highest exclusivity, sophisticated design and trailblazing high-end technology also distinguished the CL-Class of the C 216 series which drove into the public limelight in autumn 2006. Typical of the visual appeal of the new masterwork is the interplay of clear-cut, taut lines with large tranquil surfaces. Familiar Mercedes features present themselves in a contemporary interpretation, reconciling tradition and modernity. Examples of this are the Mercedes-typical radiator grille with the wide chrome louvers, the fully retractable side windows without B-pillars, and the C-pillar which tapers towards the bottom (first seen in the 220 SEb Coupé in 1961).

Elegance in the interior too: through the large side window the gaze wandered over a beautifully designed dashboard, high-quality wood trim and soft leather upholstery. It became immediately clear that in the CL everything serves comfort and relaxation. Automatic climate control, COMAND with radio and CD/DVD player as well as a sliding glass sunroof were standard appointments that contribute to a fantastic driving experience.

As an optional extra, dynamic multicontour seats were available. In the CL600 they were standard equipment. The list of technical innovations included the standard-fit bi-xenon headlight with active curve illumination.

The anticipatory occupant protection system PRE-SAFE® installed at the factory was complemented by Mercedes-Benz for the first time with the PRE-SAFE® Brake, which initiates automatic, partial braking action in the acute risk of an accident. It works together with the Brake Assist PLUS (BAS PLUS), which warns the driver visually and audibly of an imminent crash and automatically calculates the braking pressure necessary to avert the crash. Both systems, as well as the Parking Guidance system newly developed for the CL, are based on radar technology.

One year after the debut of the C 216, a further innovation - the radar-based Blind Spot Assist - arrived.

For the C 216 model series Mercedes-Benz again offered the most powerful engines in the entire range: the eight-cylinder in the CL550 now delivered 382 hp). Under the hood of the prestigious CL600 the twelve-cylinder biturbo engine, uprated to 510 hp), developed its impressive power. Still more power was offered beginning in 2007 by the CL63 AMG with 518 hp and the CL65 AMG with 604 hp.

2010: new yardstick for efficiency among the luxury coupes

Starting in November of 2010 the restyled C 216 takes on a role as trailblazer in the area of drive systems. Under the hood of the CL550 4MATIC a new V8 biturbo engine with BlueDIRECT technology unleashes its power. With its 4663 cubic centimeters displacement, the eight-cylinder engine produces 429 hp so that despite 0.8 liters less displacement, it is still around 12 percent more powerful than its predecessor. At the same time, torque was raised from 391 lb-ft. to 516 lb-ft. - an increase of 32 percent.

The BlueDIRECT technology in the V8 biturbo engine comprises a number of new developments which are unique in their combination. They include thirdgeneration spray-guided direct injection featuring piezo injectors and multi-spark ignition with up to four ignition sparks within a millisecond.

In addition, with the Active Lane Keeping Assist and Active Blind Spot Assist two new driver assistance systems have their premiere in the CL (at the same time as in the S-Class). They are able to respond actively and act autonomously in the event an accident threatens, in order to avoid accidents or mitigate their consequences.