Why is my Audi A8 engine making a strange sound?

I just noticed that my Audi A8's engine is making a strange sound while driving. It's not a typical engine noise and I'm worried that it may be a sign of a bigger problem. Can anyone offer some advice on what might be causing this and how to fix it?

It's possible that your engine is experiencing an issue with the timing belt. This can cause strange noises and if left unchecked, can lead to serious damage. I recommend taking your car to a mechanic for a thorough inspection and potential replacement of the timing belt.

Check your oil level and make sure it's not low. Low oil can sometimes cause strange noises in the engine. If it's low, top it off and see if that helps. If not, it's best to take it to a professional for further diagnosis.