After my brother and I rebuilt the engine on his Geo Metro, we started getting really good gas mileage. My brother recently bought some aerodynamic hubcaps which may have helped our gas mileage. Yesterday he broke three of our personal records for mileage, he got 47 MPG on the way to work (mostly uphill), 82 MPG on the way down, and finally reached over 60 with 60.6 MPG for the day's average. Not bad huh? Take into account a lot of that is due to driving habits and knowing how to get the best mileage. Also though, it is a really well built car.