So I ran a milage test this week. I topped off the tank and ran 60 MPH hwy speed and the posted speed limit every where else. I cut the jack rabbit starts at lights and watched the RPMs and did not over rev between shifts. In short, I drove like an old man. I ran 374 Miles on 10 gallons of fuel to get 37 MPG, up 5 MPG from what I usually get. Normally I run the car any where from 65 to 75ish MPH and have been getting around 31-32 MPG. I plan to add a K&N air filter to see if I can break into 40 MPG. I hate to take her down to 55 MPH in fear of getting run over, but I may to see what that will take me to. Maybe some day will have enough dough for an 06 GTO, but till then the Aveo will do ( I do dig the looks of the 2011 models if they end up looking like the pics I see).