My average is 24. I reset my average with each fillup. City only, i get 18-22. Cruising on the highway (82mph) with no AC and windows up (fall is perfect for this) I get 30, i can bump that up to 32 if im futher south where the speed limit is 65.

I love northern maine now, they raised the limit to 75 last year, of course everyone was already doing 80-85 anyway