Just picked up a 22 m340 and I find myself driving in eco pro mode at least 30% of the time… the start stop function is really seamless and coasts a great deal without using combustion…usualy on 1 tank of gas doing mostly city driving ill do about 50-65km of travel with the engine off… lots of ppl give hate to the mild hybrid…but in real world use …its pretty seamless with lots of efficiency value…