What is the most common issue with the engine of a Ford S-Max?

I am considering buying a Ford S-Max, but I have heard that there are potential problems with the engine. What is the most common issue and how can it be fixed?

The most common issue with the Ford S-Max engine is a faulty camshaft position sensor. This can cause rough idling and stalling, leading to potential engine failure. I would suggest having the sensor replaced as soon as possible to avoid any further damage to the engine.

Another potential issue with the Ford S-Max engine is a faulty timing chain. If the timing chain breaks, it can cause significant damage to the engine and result in costly repairs. It's important to regularly maintain and replace the timing chain to avoid this issue.

Leaks in the coolant system are also common in Ford S-Max vehicles. This can lead to overheating and potential engine damage. Be sure to regularly check for any leaks and have them repaired by a professional mechanic if necessary.