Why is my Audi A1 making a rattling noise when I start the engine?

I have noticed that my Audi A1 is making a strange rattling noise when I first start the engine. It only happens for a few seconds, but it is quite concerning. What could be causing this and is it something I should be worried about?

This rattling noise could be caused by a loose heat shield on your exhaust system. This is a common issue in Audi A1s and is not usually a cause for concern. It is best to have it checked and tightened by a mechanic to prevent any potential damage to your exhaust system.