Why does the Audi A5 get such good reviews for its fuel efficiency?

I've been researching the Audi A5 and have noticed that many reviews mention its great fuel efficiency. What specific features or technologies contribute to its impressive fuel economy?

One of the reasons for the good fuel efficiency of the Audi A5 is its lightweight construction, made possible by the use of aluminum and other lightweight materials. This reduces the overall weight of the car, allowing for better fuel economy.

The Audi A5 also boasts a highly efficient engine with advanced technology, including direct injection and a turbocharged design. These features help maximize fuel efficiency without sacrificing performance.

In addition to its engine and lightweight construction, the Audi A5 also utilizes various aerodynamic design elements, such as a streamlined body and active grille shutters, to reduce drag and improve fuel efficiency.