What is the cause of a rough idle in the Audi A8?

I have noticed that my Audi A8 has been idling rough recently. What could be causing this issue and how can I fix it?

One possible cause of a rough idle in an Audi A8 could be a dirty or faulty mass air flow sensor. This sensor helps regulate the amount of fuel the car gets, so if it is not working properly it can cause rough idling. To fix this issue, you can try cleaning the sensor with a specialized cleaner or replacing it if necessary.