Why does my Audi A2's engine make a tapping noise?

I've noticed that my Audi A2's engine has started making a tapping noise. It's not too loud, but it's definitely noticeable. Is this something I should be concerned about? What could be causing it?

It's likely that the tapping noise is coming from one of the valves in your engine. This could be caused by a few different things, such as a worn out valve seal or a loose valve guide.

I recommend taking your car to a certified mechanic to have them check it out. They'll be able to diagnose the issue and make any necessary repairs before it turns into a bigger problem.

One thing you can try is adding some oil additive specifically designed for reducing engine noise. This may help quiet down the tapping noise. But again, it's important to have a professional take a look at it as well.