Why is my Ford S-Max engine making a clicking noise?

I have noticed that my Ford S-Max's engine has started making a clicking noise while idling. What could be causing this and how can I fix it?

This could be due to low engine oil levels or a faulty valve lifter. I suggest checking your oil levels and if they are low, top them up. If the issue persists, it is best to take your car to a mechanic for further inspection.

It could also be caused by loose or worn out belts. Check all the belts under the hood and tighten or replace any that are showing signs of wear and tear.