My 2007 Cobalt LS with an automatic gets around 28-30 MPG on average which is good for how fast I usually drive. I once got a reading of 37MPG when I was using a light foot. My 2001 Cavalier Z24 only got 24.5 MPG in comparison. My 1995 Cutlass Ciera sedan got low 20's. My 1996 Escort got around 40 MPG. My 1992 Cavalier with the V6 got around 27 MPG.