[67bmer]

I just checked my mileage miles/gallons=23.5. I just did 2 140 mile round trips on the freeway. I have 4000 total miles on the car.

The on-board computer says 25.5

I am really dissapointed. My 94 325is with 174,000 miles does 28mpg (on board computer) on the same trip. It averages 25.5mpg according to the on-board computer and 26.5 according to calculator and pump.

According to BMW the e46 was supposed to be 10% more efficient than the e36. The e92 is supposed to be 10% more efficient than the e46. Thus, the e92 shoud be 20% more efficient than the e36.

I just do not see how it could realistically come close to 20/30 rating.

[Enkur]

not sure how you are driving but I drove 1300 miles from PCD to Austin, TX and I averaged about 29mpg. I was averaging about 80mph for the entire trip(according to the trip computer).

Now my city driving on the other hand only gives me about 20mpg