Basically all bikes will be different. The milage you get will all depend on your jetting, gearing, and riding style. Fill up your tank, ride 10 miles then come back and measure how much it takes to fill up your tank again. take that amount and divide it into 10. If it took 1/3 gallon (.33) to fill it back up and you went 10 miles then you roughly get 30 miles to the gallon. Just an example.