Why is my Audi 80 making a rattling noise under the hood?

I recently noticed a strange rattling noise coming from under the hood of my Audi 80. It only seems to happen when I accelerate or drive over bumps. What could be causing this and how can I fix it?

The most likely cause of this rattling noise is a loose or damaged heat shield. This is a metal component located on the underside of your car's exhaust system. When it becomes loose or damaged, it can make a rattling noise as your car moves. You can try tightening or replacing the heat shield to fix the issue.