Why does my Audi A2's engine make a strange noise when I start it?

When I turn on my Audi A2, the engine makes a loud rattling noise for a few seconds before subsiding. Is this normal, or should I be concerned?

This could be a sign of a worn or loose timing belt, which can cause damage to the engine if not addressed. It's best to take your Audi to a trusted mechanic for a check-up and potential replacement.

It's possible that your Audi's starter motor is failing and needs to be replaced. This can be a tricky fix, so it's best to have a professional handle it.