Exciting design, ultimate performance and ground-breaking efficiency: this is what the new Mercedes-Benz CLS 63 AMG is all about. The top-of-the-range version of the four-door coupé is equipped with the newly developed AMG V8 biturbo engine, featuring a peak output of up to 410 kW (557 hp) and 800 Nm of torque, as well as the AMG SPEEDSHIFT MCT 7-speed sports transmission. On top of this, the vehicle’s fuel con-sumption of 9.9 litres per 100 km (NEDC) represents an improvement of 32 percent compared with the previous model. The combination of an AMG RIDE CONTROL sports suspension with electronically controlled damping system and new front axle, newly developed electromechanical AMG sports parameter steering, and also optional AMG ceramic high-performance composite braking system, is synonymous with maximum driving dynamics. Visually, the CLS 63 AMG impresses with its athletic appearance and distinctive exterior and interior design. The model’s standard specification also includes innovative LED High Performance headlamps.
“The new CLS 63 AMG continues the success story of the previous models, the CLS 55 AMG and CLS 63 AMG, which have delighted our customers all around the world since 2004,” according to Ola Källenius, Head of Mercedes-AMG GmbH. “The CLS 63 AMG is a unique high-performance car – it sets new standards in design, performance and efficiency.”
As with the S 63 AMG and CL 63 AMG, drivers of the CLS 63 AMG will benefit from an eight-cylinder powerhouse, designated internally as the M 157: the new AMG 5.5-litre V8 biturbo engine boasts a combination of innovative high-tech components which, in addition to spray-guided direct petrol injection with piezo injectors, also include a full aluminium crankcase, four-valve technology with camshaft adjustment, air/water intercooling, generator management and stop/start system. The weight-optimized AMG sports exhaust system with dual twin chrome tailpipes ensures a distinctive engine sound. With a displacement of 5461 cc, the eight-cylinder engine develops a peak output of 386 kW (525 hp) and torque of 700 Nm (516 lb-ft). In conjunction with the AMG Performance package, these figures increase to 410 kW (557 hp) and 800 Nm (590 lb-ft). Both variants of the CLS 63 AMG achieve exceptional performance: acceleration from zero to 100 km/h (62 mph) takes 4.4 and 4.3 seconds respectively, and the top speed is 250 km/h (155 mph) (electronically limited).
The major difference between both power units is the increase in the maximum charge-air pressure from 1.0 to 1.3 bar. In addition, the CLS 63 AMG with the AMG Performance package features a special high-quality genuine carbon fibre engine cover.
Despite a significant performance increase compared with the previous model, which had a naturally aspirated AMG 6.3-litre V8 engine producing 378 kW (514 hp)and 630 Nm (590 lb-ft) of torque, the new CLS 63 AMG is some 4.6 litres, or 32 percent, more economical – which represents a quantum leap forward. The NEDC (New European Driving Cycle) fuel consumption of 9.9 l/100 km (23.75 mpg/US, 10.10 km/l) equates to a CO2 output of 231 g/km. Thanks to these figures, the new V8 Coupé from AMG not only undercuts all of its direct competitors in the four-door high-performance coupé segment, but is also more fuel efficient than significantly lower-powered vehicles. Both performance variants have identical fuel consumption and CO2 figures.
An important contribution towards achieving the unrivalled consumption figures has been made by the AMG SPEEDSHIFT MCT 7-speed sports transmission, a component used exclusively at Mercedes-AMG. Unlike a conventional automatic transmission, the MCT transmission does away with the torque converter; instead, it makes use of a compact, wet start-up clutch. Also fitted as standard equipment is the stop/start function: it is permanently active in the transmission’s Controlled Efficiency (“C”) mode, and switches the eight-cylinder engine off when the car comes to a stop. At the same time, “C” mode also means a “soft” accelerator response set-up with convenient and early gearshifts; moving off generally takes place in second gear. A green “ECO” symbol in the AMG instrument cluster shows the driver that the stop/start function is active.
The engine and transmission come across as much more agile in the “S” (Sport), “S+” (Sport plus) and “M” (Manual) modes; in addition, the stop/start function is switched off. In “S”, “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. The highly emotional vocals are an appealing side effect of this lightning-fast process. An automatic double-declutching function and RACE START function are also included as standard.