Why is my Audi A4's engine making a ticking noise?

I recently noticed that my Audi A4's engine is making a ticking noise when the car is running. It seems to be coming from the front of the engine. What could be causing this and how should I address it?

It's possible that there is an issue with the valves in your engine, which could be causing the ticking noise. I would advise taking your car to a mechanic to have it checked out as soon as possible.

Another possibility is that there is a problem with the timing belt or chain, which could be causing the noise. I would recommend having a professional look at your engine to diagnose and fix the issue.