The M6 is a high-performance version of the BMW 6-Series automobile.
1983
In 1983 BMW took the M88/3 engine, a modified version of the M88/1 from the BMW M1 and put it in the E24 chassis, creating the M635CSi, commonly called the M6. The M6 also had improved suspension, brakes, and a close ratio manual gearbox.
2005
The new BMW M6 made its debut at the 2005 Geneva Motor Show. The new M6, based on the BMW E63/E64 6-Series, will be introduced in 2005. It will share its 5.0 L V10 507bhp, 384lb ft engine and SMG gearbox with the E60 M5. BMW claims it will accellerate from 0 to 100 km/h (62 mph) in 4.6 seconds and have a electronically limited top speed of 250 km/h (155 mph), although it is rumoured to be capable of 200 mph (320 km/h) without the restriction. Drivers are unlikely to want all of the power, all of the time, the M6 will have the same 'power button' as the M5 which modifies the throttle response. From ignition, the car delivers 400bhp, but engaging the button allows the full 507bhp. It weighs 1710kg thanks to a carbonfibre roof panel as well as thermoplastic front wings, aluminium doors and bonnet and compound boot lid. Intially it will only be available as a coupe, although a cabriolet and a lightweight CSL version are expected in 2006 and 2007 respectively.It can be visually distinguished by its deeper front valance with air intakes, more contoured side sills and a rear valance with diffuser as well as four tail pipes.
References
http://www.bmw.com/generic/com/en/products/automobiles/index.html
Kable, G (14. December, 2004). BMW unleashes M6 supercoupe. Autocar pp. 8-11.
