Vibration and fuel efficiency are major drawbacks

The Yamaha Alpha provides a stylish design, but the quality of the plastic used in the body parts is quite cheap. The engine performance is rather poor, and it is not very fuel efficient either. The ride quality and handling are decent, but there is a lot of vibration in the engine, making it difficult to ride in peace. The brakes are fairly good as well.

The main areas of improvement for the Yamaha Alpha would be the quality of the body parts, its fuel efficiency, and the engine vibration and RPM.

In conclusion, the Yamaha Alpha looks great, but its vibration and fuel efficiency are major drawbacks.