The wife usually drives the commander, and every time I get in this thing it is between 9.8 and 10.8 max which is comical really. I have tried everything to get better economy as far as maintenence (New oem plugs, afe intake, cat back exhaust,pcv, all fluids, seafoam, ect.).. Driving in the city 90% certainly does not help, but the best possible economy I can get at highway speed is about 16 with MDS fully kicked going slightly downhill while hitting the reset button..I keep telling myself it is the tire size skewing the numbers but lets be honest, it's not gonna be anywhere near as much as I would like..