How can I achieve better fuel efficiency in my Audi A7?

I recently purchased an Audi A7 and I'm concerned about the fuel efficiency. Is there anything I can do to improve it?

Regularly check and change your air filter. A dirty air filter can decrease fuel economy by up to 10%.

Make sure your tires are properly inflated. Underinflated tires can decrease fuel efficiency by 0.2% for every 1 psi drop in pressure.

Avoid excessive idling. Idling for more than 30 seconds wastes fuel and can also damage your engine.