How can I improve the fuel economy of my Audi A8?

I've been noticing that my Audi A8 is not getting the fuel efficiency that it used to. How can I improve the fuel economy of my vehicle?

You can start by maintaining your car's tire pressure. Properly inflated tires can improve your fuel efficiency by up to 3%.

Another way to improve your fuel economy is to avoid idling for long periods of time. Turn off your engine if you're going to be stopped for more than a minute.

Regularly changing your air filter can also help improve your fuel efficiency. A dirty air filter can reduce your gas mileage by up to 10%.