How does the Audi A2's intelligent body design improve fuel efficiency?

I heard that the Audi A2 is known for its innovative design, but how exactly does it contribute to better fuel efficiency? Can you explain the key features and technologies involved?

The Audi A2's lightweight aluminum chassis and aerodynamic body design greatly reduce overall weight and drag, significantly improving fuel efficiency.

The A2 also utilizes regenerative braking, which captures energy that would have been lost during braking and stores it for later use, reducing the amount of energy needed from the engine.

Audi's intelligent thermal management system in the A2 also helps to reduce fuel consumption by efficiently managing engine temperature and reducing friction. It's a small but important detail in improving overall fuel efficiency.