How does the Audi A1 achieve its fuel efficiency?

I've heard that the Audi A1 has excellent fuel efficiency for a luxury car. Can you explain how this is achieved and what technologies are used?

The Audi A1 uses a combination of technologies to achieve its impressive fuel efficiency. These include a highly efficient turbocharged engine, advanced aerodynamics, and an efficient 7-speed S tronic transmission.

One of the key factors in the Audi A1's fuel efficiency is its lightweight design. This allows the car to use less energy to move and therefore consume less fuel.

The Audi A1 also uses regenerative braking, which captures energy that would normally be wasted during braking and stores it in the battery. This helps to conserve fuel and reduce emissions.