Originally Posted by Ed_330i
it would be a grave insult to M car owners if their engine suddenly appears in a regular BMW car.
That's an interesting thought I hadn't pondered. Then again, it's all relative. If the M3 gets a V8, it will still be quicker than an e90 with the e46 M3 engine. Today's e90 is quicker than the M3s a few generations ago.
The old saying, "there's no replacement for displacement" holds generally true as the Infiniti G35 and Lexus IS350 both have 3.5L engines. Mazda will be introducing a crossover SUV (shown at the Detroit Auto Show) that will produce 244 HP. The Audi RS4 produces 420 HP. The last thing BMW needs to concern itself with is competing with it's own existing models. The real competition lies elsewhere.