What is the most common cause of engine overheating?

I have a BMW 4 Series and recently noticed that my engine is overheating. What could be causing this issue?

The most common cause of engine overheating is a malfunctioning thermostat. It is responsible for regulating the engine's temperature and if it fails, the engine can quickly overheat.

Another possible cause could be a low coolant level. It is important to regularly check and refill your coolant to avoid overheating issues.

A faulty water pump can also lead to engine overheating. It is responsible for circulating the coolant throughout the engine, so if it malfunctions, the engine can overheat.