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In the time being ...
23-24 mpg surburban driving (not quite city, not quite highway)
I averaged 30-32 mpg when I drove to Boston. I filled up immediately before hitting the interstate, filled up again once I got to Boston immediately off of interstate. Cruise was set at 72, air conditioning was on 68.
But, whenever you drive this thing any more than like a grandma, gas mileage drops off significantly. Try to stay off boost, and shift at 3000 if you are looking for good mileage.