Why is my Audi A4 making a loud knocking noise?

I have noticed that my Audi A4 is making a loud knocking noise whenever I accelerate or decelerate. It seems to be coming from the engine area. Any idea what could be causing this and how I can fix it?

It could be a sign of a mechanical issue, such as a worn out engine bearing or loose components. It's best to have it checked by a mechanic to diagnose and resolve the problem before it gets worse.

Your car may be low on oil, causing the engine to make strange noises. Check your oil level and add more if necessary. If the problem persists, take it to a mechanic for further inspection.