On my last 300+ mile ride, I went 170 miles before the other guys I was riding with needed to stop for fuel, so when we stopped I refueled too...& I hadn't even flipped to reserve yet...I somehow managed to spill gas everywhere (which is another story), so I couldn't get an accurate MPG figure for that fill. When I got home I topped the tank from portable cans (non-E ain't easy to come by), so again, no accurate measure. That said, the bike is getting more than 55 MPG on trips...