Why does my Audi A2's engine make a rattling noise during acceleration?

I recently noticed that my Audi A2's engine starts to make a strange rattling noise whenever I accelerate, especially at high speeds. It seems to be coming from the front of the car but I can't pinpoint the exact source. What could be causing this issue?

The most common cause of engine rattling during acceleration is a loose heat shield. This can be easily fixed by tightening or replacing the heat shield. Make sure to check all of the heat shields around the exhaust system.