Why is the engine making unusual noises?

I have noticed that my Audi 80 engine is making strange noises when I start the car and when driving. Is this something I should be concerned about?

It is possible that there is an issue with one of the engine components. It would be best to have a mechanic take a look to determine the cause of the noise and address any potential issues.

If the noises are a high-pitched screeching sound, it could be a sign of a loose or worn belt. This should be checked and replaced if necessary to prevent further damage to the engine.

Another possible cause of the noise could be low engine oil. Check the oil level and top up if needed. If the noise persists, it is best to have a professional inspect the engine for any potential issues.