Why is my Audi 80 engine making a rattling noise?

I recently started to hear a noise coming from my engine while driving my Audi 80. It sounds like a rattling noise and it's quite concerning. I'm wondering what could be causing this and if it's something I should be worried about.

This could potentially be caused by loose or worn out engine components, such as the timing chain or valve train. It's best to have a mechanic check it out as soon as possible to avoid any further damage to your engine.

It could also be caused by low engine oil or dirty oil, which can cause components to rub together and create a rattling noise. Check your oil level and schedule an oil change if needed.