How do I change the settings in my Audi A6 to improve fuel efficiency?

I've noticed that my Audi A6 consumes a lot of fuel and I want to change the settings to improve its fuel efficiency. What should I do?

First, try using the Eco mode in your Audi A6. This will automatically adjust the engine and transmission settings to optimize fuel efficiency.

Another way to improve fuel efficiency in your Audi A6 is by regularly checking and replacing your air filters. This can greatly improve engine performance and reduce fuel consumption.