Why does the Audi A2 have such great fuel efficiency?

As a sustainable car with a light aluminum frame, the Audi A2 was designed to be light and aerodynamic, reaching maximum fuel efficiency. Can anyone provide insight on the specific engineering techniques used to achieve such high fuel efficiency?

The Audi A2 utilizes a combination of innovative design features and advanced technology to achieve its impressive fuel efficiency. The lightweight aluminum frame reduces overall weight and drag, while the aerodynamic shape allows for smooth airflow and improved handling. It also comes equipped with a hybrid engine, which further enhances fuel efficiency by utilizing both gasoline and electric power.

One of the key aspects of the Audi A2's fuel efficiency is its start-stop system, which automatically shuts off the engine when the car is idling or in traffic. This not only reduces emissions but also saves on fuel consumption. It's a small but significant feature that contributes to the overall sustainability of the car.