 I live in Calif so this car is almost polution free with the PZEV system, (grilling a burger produces more Hydro Carbons than a 100 mile trip) it may cut into the MPG but I am getting 31 combined in the LA area and 36 on a recent road trip along the california coast with varing speeds and hills and with stops in towns on the way. So I am really pleased with this fun to drive car. My business partner bought a Toyota Yaris as it gets 37-39 but on highway speeds the road noise is terrible and the stearing is by wire so it does not handle near as nice as the focus, and is very slow to get up and going compared to the focus, 1.5 vs. 2.0. for just a couple of mpg I will take the power any day