I brought a 4s champion around 3 years back and the bike is still serving me very well . In 3 years not once did it break down . And believe it or not I have not yet changed one of the bulbs in this bike baring out the accident which made me change my rear brake light cover and bulb . And yes bajaj company should start improving its silencer quality because I have noticed a lot of torn silencers on bajaj bikes and even I had to get changed after a year I brought the bike . Well the mileage is what I expected 65- 70 KMS/PL . The company should stop making tall claims about 87 KMS/PL . Overall a good bike but not good for the highways the bike tends to shake when a truck or bus passes by at high speeds . But nowdays with the varity of bikes available I would rather go for a better looking bike rather than the old 4s champion look .Overall a good bike but needs improvement on looks power and handling.