Why does my Audi A1's engine make a clicking noise when idle?

I've noticed that when my car is stationary and the engine is running, there is a frequent clicking or tapping noise coming from under the hood. It sounds like metal hitting metal. Is this normal for my Audi A1 or could it be a sign of a bigger issue?

This clicking noise could be a sign of an issue with the hydraulic lifters in your engine. It's important to get this checked out as soon as possible, as it can lead to further engine damage if left unchecked. I recommend taking your Audi to a mechanic for a proper diagnosis.