The bike is okay, but the service cost and experience is quite bad

I have been using this Yamaha SZ  for 11 years now, and the buying experience was quite good. The seating is very comfortable for me, given my height. The riding experience is quite good, however, I have noticed that when I use the rear brakes, the rear tire tends to skid a bit. Other than that, the bike is really good.

The engine has had some issues since the date I bought it - the speed gets stuck after 70 km/h and the pickup is good. However, the engine tends to leap around a lot, making it difficult to ride. The maintenance is average and the servicing cost is really high, even though the problems remain after servicing. The disk brakes are not very durable either and they get stuck with the tire quite often.

The self-start is awesome - it starts in one try even after 11 years of usage. The mileage is quite low, at around 40 km/l.

Overall, the bike is good, but the service cost and experience is quite bad.