How does the Audi A5 manage its fuel efficiency?

I am curious about the measures taken by Audi to improve the fuel efficiency of the A5 model. Can you provide information on how Audi addresses this issue?

The Audi A5 is equipped with a start-stop system, which automatically turns off the engine when the car comes to a stop, thus saving fuel consumption. As a personal tip, turn off the air conditioning when you don't need it to further optimize fuel efficiency.

Audi uses a design technique called downsizing, which involves reducing the engine size without compromising the power output. This results in a more fuel-efficient vehicle. For additional efficiency, try using synthetic motor oil instead of conventional oil.