Why does my Vauxhall Astra's engine make a clicking noise?

I have noticed that my Vauxhall Astra's engine has started making a clicking noise while idling. What could be causing this and is it something I should be concerned about?

The clicking noise could indicate an issue with your valve train or lifters. It would be best to have a mechanic inspect and diagnose the problem.

If your engine is also experiencing loss of power or misfires, the clicking noise could be due to a faulty fuel injector. In that case, it is important to have it replaced to avoid further damage.

Check your oil levels and make sure they are at an appropriate level. Low oil levels can sometimes cause the engine to make unusual noises. If the noise persists, it may be a sign of engine wear and it is recommended to have it checked by a professional.