Compare apples to apples: the e53 weights how much and puts out how much HP/Torque and has what interior volume? A heavier, larger vehicle that accelerated faster e70 but uses the less fuel relative to a smaller, "slower" vehicle e53 may be BMW's angle here.


BMW may simply look at how much fuel into the engine puts out how much energy and that the e70 is simply more efficent.

This may be the dynamics part of their efficent dynamics baloney.