What is the most efficient way to clean the Audi A2's air filter?

I've noticed a decrease in performance and want to clean my air filter in order to avoid replacing it. I'm unsure of the best method and could use some guidance.

It's recommended to use compressed air to blow out any dust or debris from the air filter. This method helps maintain the integrity of the filter while still ensuring it is clean.

You can also use a vacuum and brush to gently remove any dirt from the air filter. Just be careful not to damage the filter itself.

I highly suggest using a specialized air filter cleaner and then allowing it to fully dry before reinstalling. This will ensure your air filter lasts as long as possible.