How to change the air filter on an Audi A6?

I recently noticed that my car's engine is sounding louder and I suspect it's due to a dirty air filter. How can I change the air filter on my Audi A6? Are there any special tools or techniques I should know about?

Changing the air filter on an Audi A6 is a relatively simple task that you can do yourself. First, locate the air filter housing under the hood. It's typically a black box with a large hose connected to it. Next, use a screwdriver to remove the screws or clips holding the housing in place.