What are the advantages of the Audi A2's aluminum construction?

I am considering buying an Audi A2 and I keep hearing about its aluminum construction. What is the benefit of this? Is it worth the investment?

The aluminum construction of the Audi A2 leads to a lighter and more fuel-efficient car, as well as improved handling and performance.

Aluminum is also a highly durable material, making the Audi A2 more resistant to rust and corrosion compared to other cars with traditional steel construction.

Not only that, but the aluminum construction allows for a more spacious interior, as less material is needed for the car's frame.