Yamaha SZ r is very poor quality bike from Yamaha. Its looks average but the cost of the spare parts for this Vehicle is too high. Just a simple gear lever costs about Rs. 1400 at Yamaha showroom. Also its mileage is around 35 to 40 kmpl which is very very poor. Not just that but also the riding comfort with this Bike is way too bad. The positioning of It's handle bars makes it really uncomfortable to ride for long distances. Also it has got a very poor suspension. Moreover its tires are too thin and as a result it lacks the grip on road.
Honestly I will never prefer anyone to buy this bike as it will be a total waste of money. There are variety of bikes available in this segment like Bajaj Pulsar, TVS Apache RTR, etc.