I think one has to face the FACT that to get mpg up to 40 and above in a mixed suburban environment, one cannot drive this car "normally" (I do not mean heavy handed or heavy footed) I state this in distinction to highway or trip miles in which most cars get optimal mileage.
Back to the fact. Run the air conditioning and go with the traffic flow and you will be in the thirties mpgwise. Thats not bad really. But it is not what the stickers says.