Not really driving style - that's rather a glib statement. Since I was very unhappy with the city mpg (no real beef with the highway though higher would be nicer) and getting around 18-21 around suburbia, I escalated through the Saturn/GM ranks, and the car has just been returned after 3 weeks of testing in their possession. Saturn got 21.5 MPG city too so there you have it. Also nothing is wrong is confirmed - this is what they do. Basically this is a 20/28 car, which is better than a 12/20 car but not what I was expecting either. Like I mentioned, they draw your atention to the EPA sticker, and hype up those numbers, when they sell you the car. At the time of buying, there wasn't much to research, so due dilligence was difficult - I put a lot of trust in Saturn as the previous 2 had performed as promised.

One thing did come up out of this testing. I did hear of an owner who was getting really bad MPG's - consistently below 18. They found he had a faulty oxygen sensor that wasn't throwing out a code to read. Correcting that improved economy I am told. Perhaps you could suggest that? It's in Saturn's records somewhere.