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

I have noticed that my Ford S-Max's engine has started making a strange noise. It doesn't seem to affect the performance, but I am worried it may be a sign of a bigger problem. What could be causing this and what should I do?

It could be a sign of an issue with the timing belt or another engine component. It is important to get it checked by a mechanic as soon as possible to avoid any further damage.

I had the same issue with my Ford S-Max and it turned out to be a loose belt. It was an easy fix and didn't cost much. I would recommend taking it to a trusted mechanic for a diagnosis.

It could also be a problem with the exhaust system or the air intake. I would recommend getting it checked by a professional mechanic to pinpoint the exact issue.