Why does the Audi A2 have a unique aluminum design?

I've noticed that the Audi A2 has a very distinct and sleek aluminum body, what was the reasoning behind this design choice and how does it contribute to the overall performance of the car?

The use of aluminum in the Audi A2 was a conscious decision to reduce the weight of the car, resulting in improved handling and fuel efficiency. The use of lightweight materials is a common practice in high-end car manufacturing.

As opposed to traditional steel, aluminum is a more durable and corrosion-resistant material, ensuring a longer lifespan for the Audi A2. This translates to potential cost savings in the long run for owners.