How to change the air filter in an Audi A4?

I've been experiencing a decrease in fuel efficiency and was told that changing the air filter could help. How do I go about changing the air filter in my Audi A4?

Hi Samantha! Changing the air filter in an Audi A4 is a simple task that can greatly improve fuel efficiency. First, locate the air filter box. It is usually located near the top of the engine. Open the box and remove the old filter. Make sure to clean any debris from the box before inserting the new filter. Finally, close the box and you're all set.