The next BMW M3 may very well spawn an M4 coupe spinoff shortly after the covers are lifted at the 2013 Geneva Motor Show, but one thing we know for certain is the new M car will be powered by a bi-turbocharged straight-six engine.
Watch and listen as the new car is put through its paces around the Nurburgring.
Also read “New twin-turbo powerplant for next M3.”