What is the maintenance schedule for the Audi A4’s engine air filter?

I just bought a new Audi A4 and want to make sure I’m taking good care of it. How often do I need to replace the engine air filter and what factors should I consider in determining when to change it?

The recommended maintenance schedule for the engine air filter in the Audi A4 is every 30,000 miles or every 3 years, whichever comes first. However, if you frequently drive on dirt or dusty roads, have a pet that rides in your car, or experience a decrease in fuel efficiency, you may need to replace it more often.