Yamaha FZS v2.0 returns a mileage of 45 kmpl when driven at normal speeds around 60-70 kmph. The bikes with fuel injection including both FZ and Fazer are tireless in long trips as they provide a very refined ride quality and no overheating issues. The seating position may irritate a bit to the pillion rider while having a short break after 200 kilometers would be required for sure. The fuel tank can take you nearly 500 kms without the need of a refill while riding on highway at the above given speeds. Sudden acceleration makes the engine suck in more petrol as compared to smooth addition of speed to the existing value.