In later half of 2008 Yamaha launched its premium much awaited motorcycle Yamaha r15 which was the smaller sibling of r series of yahama R1 And R6. Looks where identical to RI but smaller in dimension. Yamaha had its most advanced 150 cc engine in this bike. Got excellent performence. U can go to 128 kmph with 40 kmpl fuel economy( knn air filter) acceleration is awesome for the time. but. Spares and maintainence was costly. Fuel pump which is present in fuel tank cost u 7000 rupee needed to be replaced. My average service cost with Yamaha lube was about 1600 rupees. It is an excellent bike but lost its charm due to competition