What are the key features of the Audi A2 and how do they contribute to its superior fuel efficiency?

I want to understand more about the specific design elements or technologies that help the Audi A2 achieve its impressive fuel efficiency ratings. Can you provide more insight into what sets this car apart in terms of fuel economy?

The Audi A2 has been lauded for its lightweight construction, which helps to reduce drag and increase its fuel efficiency. Additionally, the car's aerodynamic design and low rolling resistance tires also contribute to its impressive gas mileage.

One interesting feature of the Audi A2 is its use of aluminum in its body structure. This material is not only lightweight, but also highly recyclable, making it both fuel-efficient and environmentally friendly.

To improve the fuel efficiency of the Audi A2 even further, the car includes a start-stop system which automatically turns off the engine when the vehicle is stopped and restarts it when the driver is ready to resume driving. This saves on fuel consumption in city traffic.