Mercedes-Benz CLS550

The all-new CLS-Class coupe represents the first major redesign of a car that established an entirely new market segment - the four-door coupe, which combines the emotional appeal and dynamic design of a coupe with the comfort and functionality of a sedan.

The distinctive body lines of the 2012 Mercedes-Benz CLS have been accentuated by its new design, and overall, the new CLS is about 1.2 inches longer and wider than its predecessor. The CLS fits right between the S-Class-based CL and the E-Class two-door to form a family of Mercedes coupes that makes efficient use of existing chassis and powertrain layouts while preserving their unique individual identities. More Fuel-Efficient CLS550 With its new 4.6-liter direct-injection twin-turbo V8 the new CLS550 achieves 26 percent better fuel mileage than the previous model, while still producing 402 horsepower and 443 lb-ft. of torque. The CLS550 is equipped with new electrically assisted power steering, AIRMATIC air suspension and a revised seven-speed automatic transmission. Standard Mercedes safety technology on all CLS coupes includes PRE-SAFE, ABS anti-lock brakes with Brake Assist, ATTENTION ASSIST, traction control and the ESP electronic stability control. DISTRONIC PLUS with PRE-SAFE Brake is optionally available, as well as Active Blind Spot Assist and Active Lane Keeping Assist.

The second-generation Mercedes CLS can be optionally fitted with an automatic climate control system which not only allows individual temperatures to be set for three zones - for the driver, the front passenger and the rear passengers - but additionally offers special climate modes. This means that, if the optionally available THERMOTRONIC system is fitted, the car occupants can select "Diffuse", "Medium" or "Focus" settings on the THERMOTRONIC at the push of a button and thus adjust the air quantity and air distribution to their liking without having to leave the convenient automatic mode.

Intelligent lightweight construction plays a decisive role in bridging the classic conflict of objectives between low weight and high strength in the new CLS. The CLS is thus the first vehicle from Mercedes-Benz to have frameless, all-aluminium doors. These are made from deep-drawn aluminium panels with extruded sections, and in comparison with conventional steel doors, are some 24 kilograms lighter. This is not only beneficial to the environment, operating convenience is increased too: the Coupé doors can be opened and closed more easily, particularly on an incline. The new construction has called for new joining techniques: instead of welding, a combination of gluing and riveting has been used.

Apart from the doors, the bonnet, front wings, boot lid, parcel shelf, various support profiles and substantial parts of the suspension and engines are all made of aluminium. The front end is a hybrid construction made of aluminium panels and plastic strengthened with fibre-glass. The one-piece aluminium crash boxes in the front area are fitted in the side members and are screwed into the side with them.

The large front bumper with the integral grille with the centred star is made of polypropylene. The materials experts at Mercedes-Benz have worked together with the experts from the supplier of this part to develop the plastics formulation, which has a specific talcum content of 15 percent, in order to achieve an optimum compromise between weight and rigidity, as well as excellent thermal properties. As supporting structure for the bumper there is a front end which is a hybrid construction of aluminium sheet and plastic strengthened with fibre glass. For every CLS, special adjustable fixtures are used to ensure the front fits exactly and the gap dimensions are the same all round.

Multi-piece side members and a robust, flexible crossmember made from ultra-high-strength steel form the key components of the rear-end structure. The rear side members are continuous, closed box sections with carefully graduated material thicknesses. These are able to absorb high forces, thereby making a decisive contribution to occupant safety in the event of a rear impact. The bolt-on flexible crossmember is manufactured using a flexible rolling process which likewise allows the material thickness to be varied as required. Accordingly, the material thickness on the outside of the crossmember - where impact loads are highest - is greater than on the inside.

The new CLS is the first car in the world to feature optional LED High Performance headlamps, which combine the exciting daylight colour impression of LED technology with the performance, functionality and energy efficiency of today's bi-xenon light generation. The new light system features the Intelligent Light System which has already been tried and tested in Mercedes-Benz models with bi-xenon headlamps. Its five light functions - country mode, motorway mode, enhanced fog lamps, active light function and cornering light function - have been specifically designed for typical driving or weather conditions.

Source: Mercedes-Benz press

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