Why does my Audi A6 make a strange noise when I accelerate?

I recently purchased a used Audi A6 and I noticed that it makes a strange noise whenever I accelerate. It doesn't seem to affect the performance of the car but it's concerning. What could be causing this noise?

It's possible that the noise is coming from the engine. It may be a sign of a worn or loose belt or a problem with the exhaust system. It's important to get it checked by a mechanic to prevent any potential issues.

Have you checked the air intake system? Sometimes debris can get trapped in there and cause a rattling noise. It's an easy fix, just remove any obstructions or clean it out.