Why does my Audi A3 sometimes make a rattling noise when I accelerate?

I've noticed that my Audi A3 occasionally makes a rattling sound when I press on the accelerator. It doesn't happen all the time, but it's starting to worry me. Any ideas on why this could be happening?

The rattling noise could be coming from loose exhaust heat shields. They can cause a rattling or vibrating sound when they are not secured properly.

Have you recently changed your engine oil? It's possible that the oil level is low, causing the engine to make a rattling noise. Check your oil level and make sure it's at the appropriate level.