Detroit Motor show in January. Read on for all the latest details on both cars, including the UK price, specs and release date.
The engine used in both cars is the same: a 3.0-litre twin-turbo
straight six engine, which replaces the 4.0-litre naturally aspirated V8
in the previous M3 saloon and coupe. While that old engine produced
414bhp, this new one makes 425bhp - and thanks to a weight reduction of
80kg, the 0-62mph time for both models is down from 4.6 seconds to 4.1
seconds with the dual-clutch gearbox. That’s two-tenths quicker than the
Mercedes C63 AMG Edition 507.