The new BMW M6 concept made its debut at the 2005 Geneva Motor Show. It is based on the BMW E63/E64 6-Series, introduced in 2004. It shares the same 5.0 L V10 S85 engine and SMG III gearbox with the E60 M5, and produces 514 hp (383 kW) / 520 N·m (380 lb·ft).
BMW claims it accelerates from 0 to 100 km/h (62 mph) in 4.4 seconds (0-60 mph: 4.1 s [Road & Track [2/06]) and has an electronically limited top speed of 155 miles per hour (249 km/h). With the limiter removed, the top speed can reach 205 miles per hour (330 km/h).[citation needed]
The M6 has the same 'power button' as the M5 which modifies the throttle response. From ignition, the car delivers 399 bhp (298 kW; 405 PS), but engaging the button allows the full 373 kW (507 PS; 500 hp). It weighs 3,770 lb (1,710 kg) thanks to a carbon fibre reinforced plastic roof panel as well as thermoplastic front wings, aluminum doors and bonnet (hood) and compound boot (trunk) lid.
The carbon fiber and other light materials are used in places like the bumpers and roof that are far from the center of gravity and/or high up, so that they not only reduce the overall weight but improve the handling by reducing the moment of inertia and lowering the center of mass height.
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