Q. Which is best between Pulsar NS160, Pulsar 220 F and Duke 125 in terms of mileage and on road price?

220F is best but price is high. And NS160 is the best bike compare to other bikes in range of NS160 price. If you follow the rpm of bike in new condition, after first servicing it can give you 40 to 42 kmpl mileage. And about Duke 125 I have no any idea because I never drive duke125.

Very difficult to answer as the 3 bikes mentioned are different in character.KTM should offer high mileage.Prefer Duke 125 if you are crazy about owning KTM at an affordable price.NS for a decent 160 cc bike.Instead of Pulsar 220 try RTR 200