This was the biggest mistake.i baught this bike 1.5 years ago.i was attracted towards its looks.no doubt its looks are good but they arent comfortable.my height is 5’11 and I was driving it daily to college.firstly I was feeling good but latter I was having back pain.it increased later on.on long rides this bike is worst.we have to take several brakes while long rides.even the back seat is very much high.no doubt it looks stylish but none of the use.it is also uncomfortable.for back seater there is no handle to hold.on hard breakings the person seating behind falls on the driver .very uncomfortable.for family members the backseat is not at all suitable.them comes the mileage.this bike gives 28-30 kmpl in city. being an 150 cc bike this mileage is very low.the engine is aslo not so powerfull only 150 cc.on highway it gives around 40 kmpl that is okok.the duke being 200 cc gives more mileage than R15 and has more features.the braking system of R15 is also okok.no ABS .so tyre slips on hard braking.but this bike gives good experience on corners.thats it.but I m not satisfied.rather go for duke 200.