i get about 160ish miles to my tank wich is 4.5 gal, but i fill it up when the warning light comes on and i ussually fill up around 3.3-3.8 gals... i did the math one day and got 163 miles to 3.8 gals wich is 42mpg. thats city driving/twistys/romping on it.
your suppose to get better gas milage on the highway since your not reving the motor thro stop and go traffic, but i made a 180 mile round trip on the highway and my warning light came on about 20miles outta town...