I've check my gas mileage twice.... I got 39.5 and 40.2 MPG...Ok guys, if anyones interested, I was able to put 136 miles on my bike before the low fuel light came on. I filled up at that point and it took 2.5 gallons to top it off. If I figured right, that workes out to 54 MPG. I rode mostly highway at 40 - 60 mph.