The Yamaha R15 s is the answer to those who complained about the uncomfortable pillion seat of the Yamaha R15 Version 2.0. R15 S shares the same engine with the R15 V2.0 along with the delta frame suspension, tires, exhaust etc. So, the performance and the mileage is almost same as the R12 V2. 0. The handling is the forte of this bike which is by far the best in the segment. But the looks is a bit dated now with single seat, no led tail lamp etc. The price difference is just around 4-5000 with the R15 V2. 0. So, I think there is no point of having a dated bike for just the pillion seat.