The AMG 6.3-litre V8 engine in the new E63 AMG develops a power output of 525 hp and a torque figure of 630 Nm, matching the outstanding figures for the SL 63 AMG. The high-performance Roadster has also donated its AMG Speedshift MCT 7-speed sports transmission to the new model. It dispenses with a conventional torque converter and uses a compact, wet start-up clutch. In conjunction with the four individual driving modes, the throttle-blipping and Race Start functions, the resulting, direct connection to the powertrain allows an extremely emotional and highly dynamic driving experience.
The E63 AMG accelerates from 0-62 mph in 4.5 seconds, with a top speed of 155 mph (electronically limited). Despite 11 hp of additional output versus the preceding model, the fuel consumption of the new E63 AMG has been significantly improved. It now returns 22.4 mpg, 2.6 mpg more than then previous car (NEDC combined consumption, provisional figure). This progress has been made possible by a package of efficiency-enhancing measures. These include on-demand delivery of fuel and generator management with recuperation of braking energy on the overrun, both of which are standard in the new E63 AMG. In-engine friction is also reduced by the AMG-exclusive twin-wire arc spray coating process used on the cylinder walls.
The AMG Speedshift MCT 7-speed sports transmission also makes a decisive contribution to fuel economy: a wet start-up clutch running in an oil bath replaces the previous torque converter. This unit responds extremely rapidly, dynamically and without the losses typical of a torque converter transmission thanks to its low rotational inertia. The transmission is equipped with four driving modes: "C" (Controlled Efficiency), "S" (Sport), "S+" (Sport plus) and "M" (Manual), which can be selected using a rotary electronic switch in the AMG Drive Unit. Partial suppression of individual cylinders by interrupting ignition and injection during gearshifts under full load leads to considerably faster shift times. In M mode the AMG Speedshift MCT 7-speed sports transmission allows gearshifts to be performed in 100 milliseconds.
A new, electronically controlled damping system automatically varies the damping characteristics according to the driving situation, reducing the roll angle of the body. The E63 AMG is also equipped with a newly developed, dedicated front axle with a 56 mm wider track, a tubular stabiliser, new control arms, new wheel bearings, new elastokinematics and new wheel location for more negative camber – thereby providing more grip when taking bends at speed. The AMG-specific kinematics also ensure significantly more precision. This is a highly sophisticated axle design whose principle has already proved its worth in the C 63 AMG. The rear axle likewise has more negative camber, optimised elastokinematics and a new subframe mounting for greater stability at the physical limits.
For more direct responsiveness, the speed-sensitive rack-and-pinion steering is also a new development. The steering ratio of 14 : 1 is 22 percent more direct than in the standard production models, while a more rigid steering column plus the reconfigured characteristic mapping of the speed-sensitive servo assistance ensure better steering precision and improved road contact.
The 3-stage ESP familiar from the SL 63 AMG and C63 AMG enables individual settings to be selected – with clear benefits in terms of driving pleasure combined with the same, high level of handling safety. The ESP key in the AMG Drive Unit allows the driver to choose between "ESP On", "ESP Sport" and "ESP Off" – with the currently active mode shown in the central display of the AMG instrument cluster.
Deceleration even when driving extremely briskly is ensured by the AMG high-performance braking system with 360 mm, internally ventilated and perforated brake discs all-round. Particularly resistant, motorsports-tested composite technology is used at the front axle. Outstanding grip is ensured by the 18-inch AMG light-alloy wheels with a width of nine and 9.5 inches and mixed tyre sizes of 255/40 R 18 at the front and 285/35 R 18 at the rear.
The newly designed interior of the E63 AMG is a blend of high-grade materials and functional sportiness. Exclusive features include the dedicated, electrically adjustable AMG sports seats with improved lateral support and the AMG sports steering wheel in a four-spoke design with AMG shift paddles. As a completely new feature exclusive to the E63 AMG, the AMG selector lever has one-touch logic. Directly adjacent to it in the centre console is the AMG DRIVE UNIT, which provides adjustments for the MCT sports transmission, the ESP functions, the suspension set-up and the AMG driving modes. Standard equipment also includes high-grade nappa leather upholstery in three different colours, the AMG instrument cluster with an AMG main menu, door entry sills with AMG lettering and a sports pedal cluster – both in brushed stainless steel.
The market launch of the new E63 AMG will commence in August 2009. UK specifications are still to be confirmed.