Like others, this will depend on how you ride. I've been keeping track of my MPG ever since I bought my 2008 C50T. The worst I've done is 39.8 & the best was 50.3. I keep lots of stuff in my bags & I weigh 225lbs. For an average I'm getting 45.1 MPG. I usually go slow around 45 to 60 MPH but I love taking off fast off the start which is not good for keeping the gas in the tank.