There has been rumours circulating for a while that the new BMW M5 will feature a turbocharged engine, most of us assuming that it would be some sort of V10. We were wrong.
The 2011 M5 will be powered by a twin- turbo 4.4 litre V8, and prototypes of this engine are reported to be producing 536 bhp. The test mule for the new car has already been spotted, and it has large air intakes in the front bumper- backing up the turbo- charged claims.
The new engine will almost certainly power the next M6, and there is a chance that it could be used in an M Power version of the X6 too.