Quote Originally Posted by Daox View Post
Give it a couple more tanks. City driving and the Aveo's automatic trans isn't the best combo for high mileage. It is only rated for 23 mpg city in the first place. Combine that with worse than normal traffic and super blasting the A/C (which is known to tank your mileage by 25%) in 115 degree weather makes 18 mpg sound pretty much on the spot.

at 18mpg I would have to decide if I am going to keep it or not. I have hooked up my scangauge to the car so it can help me figure out the best driving method what I have learned from driving it today is get to 50mph as fast as you can. I get worse mpg driving nice an slow up to 50 then I do taking it up to 4000rpms till I hit 50. So according to the scangauge today I averaged 25.1mpg since my fillup. I have another issue with the scanguage resetting back to default 3.0 liter motor and 15gal tank anyone else have this issue?

on top of it all right now my commute is mostly city in a month or two it will be mostly highway will I see 30mpg on 90% highway driving?