What is the most common cause of overheating in a Ford Transit Custom?

I recently bought a used Ford Transit Custom and have been experiencing issues with it overheating. I've checked the coolant levels and they seem fine. What could be causing this issue and how can I fix it?

The most common cause of overheating in a Ford Transit Custom is a faulty thermostat. It may need to be replaced to ensure proper temperature regulation.

Another possible cause of overheating could be a clogged radiator. Have it checked and cleaned to prevent further issues.

Make sure to also check the water pump, as it is responsible for circulating coolant throughout the engine. If it is damaged or worn out, it can lead to overheating.