Why is my Audi A6 making a strange vibrating noise?

I've noticed that my Audi A6 has started making a strange vibrating noise when I accelerate. It seems to be coming from under the hood. What could be causing this and how can I fix it?

It's possible that your engine mount may be worn out or damaged. This could be causing the vibrating noise. I recommend getting it checked by a mechanic and replacing it if necessary.

Another possible cause could be a problem with the exhaust system. This could be due to a loose or damaged muffler or exhaust pipe. It's best to have a professional inspect it and make any necessary repairs.