How does the Audi A7 optimize its aerodynamics for fuel efficiency?

I'm interested in learning more about the Audi A7's fuel efficiency and how it achieves it. What specific aerodynamic features does the car have?

The Audi A7 is equipped with an active grille shutter system which can adjust as needed based on the temperature and driving conditions. This helps reduce air resistance and improves aerodynamics, ultimately leading to better fuel efficiency.

In addition to the active grille shutters, the Audi A7 also has aerodynamic mirrors and an aerodynamically optimized underbody. Both of these features work together to reduce drag and improve fuel efficiency.