Why is it that the official fuel consumption (gas mileage) for the 135i and 335i (using the same engine) are so different when you compare manual versus auto transmission?
From BMWUSA (
http://www.bmwusa.com/default.aspx)
For 335i
For 135i
Notice that (on highway) for the 335i, the auto transmission is more efficient (better gas mileage) than the manual. So why in the 135i the auto transmission is so much worse than the manual (even worse than the 335i, which is a heavier car)?