Originally posted by DakarM
most combustion engine is not the most efficient at idle or just off idle.
with the M coupe I get 26-27mph when i'm cruising at 80-85mph on the freeway. if i slow to 70-75mph the mpg stays the same or drops by 1mpg.
80-85mph ~ 3400rpm in my car
german gear ratios = teh :thumbup:
autobahn ownerages:rick: