When it comes to comparing the Yamaha FZ 25 and Yamaha MT 15 Version 2.0, there are a few key differences that you should consider. The Yamaha FZ 25 is the more powerful bike, with a 249cc engine, that delivers 20.8 bhp and 20.1 nm torque. The Yamaha MT 15 Version 2.0, on the other hand, has a 155cc engine that produces 19.3 bhp and 14.7 nm torque. In terms of mileage, the Yamaha FZ 25 offers better fuel efficiency of around 40 kmpl, while the Yamaha MT 15 Version 2.0 offers a mileage of around 44 kmpl. The Yamaha FZ 25 also has a bigger fuel tank capacity of 14 liters, while the Yamaha MT 15 Version 2.0 has a tank capacity of 11 liters. In terms of performance, the Yamaha FZ 25 is a better option, as it offers more power and torque than the Yamaha MT 15 Version 2.0. However, the Yamaha MT 15 Version 2.0 offers better fuel efficiency and a bigger fuel tank capacity. In conclusion, it depends on your personal preferences and needs. If you are looking for a powerful bike with a good mileage and a bigger fuel tank capacity, then the Yamaha FZ 25 is the better choice. However, if you are looking for a bike that is more fuel efficient and has a smaller tank capacity, then the Yamaha MT 15 Version