Why does my Audi A4's engine make a ticking noise when running?

I have recently noticed a ticking sound coming from my 2015 Audi A4's engine while it's running. It seems to be more prevalent when the car is idling. Is this something to be concerned about?

The ticking sound you are hearing is most likely coming from your engine's valves. This is a normal occurrence and is not something to be concerned about, as long as it is not accompanied by any other unusual engine noises or performance issues.

It's possible that the ticking noise is due to a worn timing chain. This is a common issue in Audi A4s and can be easily fixed by replacing the timing chain. I would recommend taking your car to a trusted mechanic for a proper diagnosis and repair.

I experienced a similar issue with my Audi A4 and it turned out to be a faulty valve lifter. This is a relatively easy and inexpensive fix, so I would recommend having your mechanic check this as a potential cause for the ticking noise.