How to improve the fuel efficiency in my Audi A6?

I recently bought a used Audi A6 and I have noticed that the fuel efficiency is not as good as I expected. What steps can I take to improve it?

It's important to keep up with regular maintenance such as oil changes and tire rotations. This will ensure that your engine is running smoothly and your tires are properly inflated, which can greatly impact fuel efficiency.

Consider replacing your air filters and spark plugs if they have not been changed in a while, as these can also affect fuel economy.

Closely monitor your driving habits. Avoid harsh braking and acceleration, and try to maintain a constant speed when possible. Additionally, using cruise control on the highway can also help improve fuel efficiency.