Why is the engine of my Audi A3 making strange noises?

I just bought a used Audi A3 and I've noticed that the engine is making some strange noises. They're not constant and seem to come and go. Should I be worried about this? What could be causing these noises?

It's possible that it could be a minor issue, such as a loose belt or a dirty air filter. However, it's always best to get it checked out by a professional mechanic to ensure that there are no larger issues at play.

Some Audi A3 models are known to have issues with the timing chain tensioner, which could be causing the strange noises you're hearing. It's best to have a mechanic take a look and see if this is the case.

If you just purchased the car, it's always a good idea to get a thorough inspection done by a trusted mechanic. They can check for any potential issues and give you peace of mind.