Yamaha FZ Series set a new benchmark for biking. The FZS-FI takes it to the next level. It brings the most advanced Yamaha Blue Core concept to offer bikers an unmatched experience of performance and efficiency.Yamaha Fuel Injection(FI) engine thats a better option.this bike are not confortable triples riding.back side littile higher.milea age is ok biz its 150cc give average som complainte abt mileage.