Why is the Audi A2's aluminum design important for its performance?

I've been hearing a lot about the aluminum design of the Audi A2 and how it contributes to its performance. Can someone explain the technical details and benefits of this design?

The aluminum design of the Audi A2 greatly reduces the weight of the car, leading to improved fuel efficiency and handling. Additionally, the material is also more durable and resistant to corrosion.

One of the major benefits of the Audi A2's aluminum design is that it allows for better weight distribution, resulting in a more balanced and stable driving experience.

The use of aluminum in the Audi A2's design also helps to reduce noise and vibration during driving, leading to a smoother and quieter ride for passengers.