How does the Audi A1 manage fuel efficiency?

I am curious about the fuel efficiency of the Audi A1 and what makes it stand out in terms of saving money and being environmentally friendly.

The Audi A1 is equipped with an efficient TFSI engine and start-stop system, allowing it to consume less fuel than its competitors on the market.

If you opt for the 1.5 litre diesel engine, the Audi A1 can achieve an impressive fuel economy of up to 70 miles per gallon on long journeys.

Besides its efficient engine, the Audi A1 has a highly aerodynamic design and lightweight construction, further aiding in its fuel efficiency.