Are you sure? What about the M division? M has always been high revving, can this last forever? You may be right, but I think eventually BMW may transition back into NA. Will it get to the point where BMW cannot make M cars NA and begin to make them turbo charged?

It is so funny to think that Audi was a big turbo fan, yet their current S4 became the first S4 to be NA and the RS4 followed. This does not mean that turbo is the best choice, so BMW in using it may just be a wise decision from the board or the marketting group knowing it will attract many enthusiastic buyers and tuners.

Martinbo you are right. Other manufacturers have had time to distinguish themselves using turbos, while BMW has not. This does not mean, like you said, that they have not advanced turbo techonlogy in any way or form, they have just begun to utilize it in this ever demanding market.