So I have had my P5 about a month now and I have put 4 tanks of gas in it. The total average is 29.4. The car gets about 32 on mostly highway and 27 mostly city driving. Overall I am pretty happy with the mileage, but I am going to see what I can do this tank of gas. I am thinking it will not be hard to get about 35 in city driving and I don't think 40 is out of the question. I'll post up the results at the end of this tank.