Please dont give wrong information to ppl if u dont know about the situation properly.....it is NOT always flop... u wanna see a vario? with 1lakh 34 thousand mileage, 1 lakh on cng, still going perfect... the problem is that people dont do the routine maintainence of their cars due to which the engine produces small vibrations, which, when conveyed to the CVT transmission, slowly eat the transmission... if the drive train is well kept, nothing happens to it on cng...!!!