How does the Audi A7's active grille control impact fuel efficiency?

I've heard that the Audi A7 has an active grille control feature, but I'm not sure how it affects the car's fuel efficiency. Can anyone explain this in more detail?

The active grille control on the Audi A7 works by opening and closing the grille based on the vehicle's speed and cooling needs. This reduces drag and improves aerodynamics, leading to better fuel efficiency.

In my experience, using the active grille control on my own Audi A7 has resulted in noticeably better gas mileage. It's a small feature, but it definitely adds up over time.