Just to clarify; this will not be a diesel M5. It will be far from it actually as this car only produces 381 Hp whereas an M5 produces 560 and pretty much equal tq from the gas model. This car should really not get an M designation and IMHO BMW is going downhill as a brand fast, sure their sales are great but certain things happen when sales are great.
I can't quite figure out the point of this car