Why does the Audi A2 have a lightweight aluminum body?

I've heard that the Audi A2 has an aluminum body, but why did the company choose to use that material over others? Is there a particular reason why aluminum was chosen?

The Audi A2 utilizes a lightweight aluminum body to improve fuel efficiency and overall performance. The aluminum also offers better corrosion resistance which can extend the lifespan of the vehicle.

Aluminum's high strength-to-weight ratio makes it an ideal material for vehicles, as it provides both rigidity and lightness. This factor was likely a major consideration for Audi when designing the A2.

From an engineering standpoint, using aluminum allows for more flexible design options and easier customization. This may have played a role in Audi's decision to use it for the A2.