How often should I change the air filter in my Audi A2?

I noticed that my Audi A2's air filter looks dirty and I'm wondering how often I should replace it for optimal performance.

It's recommended to change your Audi A2's air filter every 15,000 miles or once a year, whichever comes first. However, if you often drive in dusty or dirty environments, it may be necessary to change it more frequently.

While following the recommended maintenance schedule is important, it's also a good idea to visually inspect your air filter every few months. If it looks noticeably dirty or clogged, replace it.