Thunderchunk
New Member
I have a 1997 Buick Skylark Custom 4 door. It has 70,000 miles on it. I just bought it a couple weeks ago, and have tested this mileage on two full tanks of gas now. It only gets about 16mpg in the city. This just doesn't seem right for a 4 cylinder engine. My piece of crap 1994 Dodge Caravan gets 19 mpg in the city and that's a minivan with a horrible running 6 cylinder. So anyway, I talked to a mechanic briefly and he said that if something was wrong with it that the check engine light should be on. He also said it would cost $80 just to give it a diagnostic check or whatever. Any suggestions on what might be wrong with it or what I should do? Thanks!