What are the reasons for high engine temperature in Volkswagen Sagitar?

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Volkswagen Sagitar engine high temperature specific reasons are as follows: Water pump damage: The coolant relies on the water pump for circulation. If the water pump is damaged, the coolant basically loses its function, and the heat generated by engine combustion cannot be dissipated. Lack of coolant: It is common knowledge among car owners that insufficient coolant leads to rising water temperature. However, using water or substandard coolant as cooling medium can also cause excessive engine temperature. Thermostat damage: When the thermostat is damaged or stuck, the engine only has a small circulation, and the radiator has no cooling effect, resulting in low cooling intensity and high engine temperature.