I bought this bike 2 years ago, for the first year the bike had no problems it used to run smoothly and had a very good pickup and a nice mileage but after a year I started to hear a slight change of the engine sound when I left my bike for service they told that its the nature of the engine, the chain gets loose often and I have to go to the mechanic every week and my pick up has become drastically down and mileage has dropped even after regular services but its good at the beginning after that its very hard to maintain the bike