AHHHH!!! Was just an estimate, no digital display to map the EXACT mileage... but that little 599 cc motor w/ fuel injection gets me round town quite efficiently. Three F4i owners in my riding group, and all claim to be getting between 50-60 mpg (rough estimate). Of course, no one really gave a poo about MPG until I started the topic. Playing around w/ the power commander really cranked the MPG's up once, hence the high estimate. Wish there was a way to accuratly test the mpg. Kind of scary running near empty on a bike :-)