[bimmer328xi]

I count my actual fuel consumption and got numbers 17.3l per 100km. I drive aggressively, but not that hard. Can I check something or do something except the way I drive? Thanks

[ppointer]

That seems to convert to 13.6 mpg, and that is awful. I had a 328i wagon that never got less than 20mpg. My e60 has the same motor and hasn't gotten less than 19mpg, and averages 21.6mpg with a high of 27mpg.

When was the last time these items were replaced or checked?:: spark plugs, CV joints, tire pressures, air filter, fuel filter, alignment? Any one of those neglected could degrade fuel mileage. A combination of a few of them could really hurt mileage.

[bimmer328xi]

Also, I want to say that on the dashboard it usually doesn't go above 12l per 100km 10-11.7 km usually. But I count it by myself and got 17l/100km

[bimmer328xi]

Haven't checked all of these by myself, maybe only previous owner. I will take it into account. Thanks

[s5s]

I don't believe e90 have a fuel filter, do they? Where is it? My 330i doesn't have one, pretty sure about that.