What is the cause of the loud engine noise in my Audi A7?

I have noticed that my Audi A7 is making a loud engine noise while driving. It seems to be coming from underneath the hood. What could be causing this and how can I fix it?

The most common cause of a loud engine noise in an Audi A7 is low engine oil levels. Check your oil level and add more if needed. If the noise persists, it could be caused by a faulty exhaust system or a damaged engine component. It's best to take your car to a certified mechanic for a thorough inspection and proper diagnosis.

Another possible reason for a loud engine noise is a worn out serpentine belt. This belt is responsible for powering various components of your engine, including the alternator and power steering. If the belt is worn or damaged, it can cause a loud squealing noise. Have a mechanic replace the belt to fix the issue.