What causes rattling noise in the Audi 80 engine?

I have recently noticed a rattling noise coming from the engine of my Audi 80. It only happens when I start the car and it lasts for a few seconds before disappearing. What could be the cause of this noise and should I be concerned?

One possible cause of the rattling noise could be a loose heat shield or exhaust system. This is a common issue in Audi 80s. You should have it checked by a mechanic to prevent any further damage to your car.

Another potential cause is a faulty timing belt or tensioner. It is recommended to have these components inspected and replaced if necessary every 60,000-80,000 miles. If your Audi 80 is past this mileage, it could be the reason for the rattling noise.

If you hear the rattling noise only when you accelerate, it could be a sign of a worn-out serpentine belt. This belt helps to power multiple components in the engine and needs to be replaced every 30,000-50,000 miles. You should have it checked and replaced if necessary.