I was owning a scooter, which was providing me a mileage of 30kpl. so I purchased the CHALLENGER for its better mileage, and for its unique features. I like the features of this bike too much.i am riding on my CHALLENGER since last 10 months, and I am feeling a great pleasure &comfort while riding on this bike.KINETIC CHALLENGER is the most powerfull 4stroke bike. in my opinion this bike is more economic bike than other bikes running in market.