When BMW unveiled the mid-life cycle impulse for the M6 in 2014, it did more than just adding a few styling cues to the car; it introduced a special, more powerful version as well.

BMW M6 Coupe

For years and years, BMW fans asked the German car maker to bring back the 6 Series, whose production was stopped in 1989. In 2003 it returned and, in 2005 it was unleashed with a mighty V10 engine in the form of the M6.

BMW installed the M1's supercar powerplant in the engine bay of a 6 Series, upgraded its brakes and suspension, and that's how one of the most iconic German vehicles was born in 1984: the M635 CSi.