Hey guys, sorry if this isn't the right place for this...
I am getting horrible gas mileage on my '02 WRX. When I bought it it was fully stock. Only mods done was a downpipe/catback (problem was still there when stocked, though). It is getting less then, but about 200 miles on a tank of gas. Last time I filled up I calculated it to be roughly 12MPG.
I honestly don't push the car as far as acceleration. I am gentle on the peddle and rarely ever push it. I do drive in city but stops are few and far between. The only thing I was thinking was that there's something up with the front O2 sensor or do you think aging spark plugs could make that big of a difference (haven't checked/changed them yet since I just bought the car, probably have never been changed)?
I don't have any service lights and everything from a visual standpoint looks normal to me. Any suggestions would be appreciated.