I do all city driving, stop and go and a lot of hills where I live, I get 275. I checked the air filter and oil filter and thats all good. I bought some fuel injection cleaner, maybe that will help. Other then that i've been pretty pissed about it. But yea, I seriously do 90% city driving and I try to conserve gas, shifting at 3 rpms and a lil over that if i'm going uphill, I avoid using reverse and all that other gas saving tips, keeping the tires inflated and all that.