Why is my Audi A3 making a rattling noise when I start it?

I just bought a used Audi A3 and I noticed that when I start the car, there is a noticeable rattling noise coming from the engine. It goes away once the car has warmed up and doesn't happen every time. Is this normal or should I be concerned?

It is not normal for an Audi A3 to make a rattling noise upon start up. This could be a sign of a potential issue with the engine or exhaust system. It is recommended to have it checked by a certified mechanic to determine the cause and address any necessary repairs.

Check your engine oil levels and make sure it is not low. Low oil levels can cause strange noises in the engine. If the noise persists, it is best to have it looked at by a professional.

It could also be a problem with the timing belt or tensioner. This is a common issue in older Audi A3 models. Have it inspected and replaced if necessary to avoid any further damage to the engine.