What causes coolant leakage from a water pump and a faulty thermostat that leads to a car overheating?

Coolant leakage from a water pump and a faulty thermostat are common causes of car overheating. If the water pump is leaking coolant, it won't be able to circulate through the engine properly, causing it to overheat. A faulty thermostat can also cause overheating by either getting stuck closed or open, preventing the coolant from circulating properly. If the thermostat is stuck closed, it will not allow coolant to flow, causing the engine to overheat. If the thermostat is stuck open, it won't let the engine heat up properly, causing poor fuel economy and performance. The loss of coolant due to the leakage from a water pump or a faulty thermostat can cause the car to overheat. When the engine loses coolant, it cannot properly regulate the engine's temperature, and it will overheat. Additionally, if the coolant is low, it won't be able to flow through the engine and the radiator effectively, which can cause further overheating. Other possible causes of overheating include a broken belt or hose or a malfunctioning radiator.