Bingo! Higher CAFE standards mean that auto makers need to be more aggressive at "training" the driver to be sparing with the accelerator. Of course, in the F10, they could have also trimmed some of the fat off the car, but I digress. Electric steering and run flats are also consequences of CAFE.
I will say that this tip in issue sounds similar to how my E70 behaves. Even though I have this throaty NA V8 at my disposal, it is sometimes difficult to get it moving quickly. S doesn't exhibit the same issue.
Sent from my HTC EVO using Bimmer App
PCD on 9/6/2011: 2011 550i, DSB, black/oyster. Prem 2, Conv, Ventilated, HUD, Sport, DHP, SAT