How do I optimize the fuel efficiency of my Audi A6?

I recently purchased a Audi A6 and I'm looking for ways to improve its fuel efficiency. Any tips or tricks would be greatly appreciated.

Regularly check and replace air filters to improve engine performance. Make sure to use a high-quality air filter for better results.

Avoid idling for extended periods of time. Turn off the engine if you are parked and not driving.

Keep your tires properly inflated to reduce rolling resistance and improve gas mileage. Check your tire pressure at least once a month.