I remember at least one report of high mileage was the fuel consumption computer readout was found to be set to Imp. Gallons. I would say normal consumption would be 35 to 55 mpg (US) depending on speed as you double the speed drag increases 4 times. I find the owners handbook that comes with the bike has lots of good information. I think many who get a bike second hand may not have one but I think it's worth it to order one.I just bought a new to me 2012 Wee, I filled it up with premium today and was putting along some back roads at about 40 - 45 mpg and the computer said 64 mpg?? when I got home, what do these get for mileage on the road?