I owned a 2004 vstar 650 for 5 years, put about 18000 miles on it commuting back and forth to work. I averaged 50-55 mpg. Biggest complaint was above 70 mph the engine "feels" like its gonna hit the rev limiter as it turns a lot more rpm's than a larger displacement bike. Maintenance is no big deal. It runs best on regular gas, which is what the manual calls for. The best forum is 650ccnd.com Tons of useful information and a lot of help with maintenance and repair if your not mechanically inclined. It was a great bike, The only reason I sold it was too many near misses from cell phone yakkers! I still ride dirt (9 bikes and counting!). Ive owned Harleys, Triumph, Honda, Kawasaki, Suzuki, KTM, Bultaco, Montessa, and Yamaha. My first bike 40 years ago was a Yamaha and I own 6 now. They make good bikes.