How does the Audi A7 achieve its high fuel efficiency?

I am interested in purchasing an Audi A7 and have heard it is known for its fuel efficiency. I was wondering what specific features and technologies contribute to this?

The Audi A7 utilizes a 48-volt mild hybrid system, which helps to reduce fuel consumption and emissions. It also has start-stop technology that shuts off the engine when the car is stopped, preserving fuel.

The A7 also has an efficient turbocharged engine and a sleek, aerodynamic design that helps to improve its overall fuel efficiency. I have one and have noticed significant savings on gas compared to my previous car.

Another factor contributing to the A7's fuel efficiency is its lightweight construction and use of aluminum in key areas of the vehicle. This helps to reduce weight and improve overall performance and efficiency.