Why does my Audi A7 have a rough idle when parked?

I've noticed that my Audi A7 has a rough idle when parked, but smooths out when driving. What could be causing this issue?

This could be caused by a number of factors, such as a dirty air filter or worn spark plugs. It's best to take your car to a mechanic for an inspection and potential tune-up.

I experienced a similar issue with my Audi A7 and found that cleaning the throttle body helped improve the idle. You can try doing this yourself or bring it to a professional if you're not confident with car maintenance.

I've also had this issue with my Audi A7 and discovered that it was caused by a vacuum leak. Have a mechanic check for any leaks in the hoses or gaskets and replace them if necessary.