What does cold start refer to when the engine temperature is below a certain level?

[SanMaria]

Cold start refers to restarting the vehicle after it has been parked for a period of time, and it is not defined by a specific temperature. Below are the differences between cold start and hot start for vehicles: 1. Safety: Cold starts are more damaging to the car, with over 80% of engine wear occurring during the cold start phase. Hot starts are the opposite. 2. Starting: Cold starts make it harder to start the vehicle compared to hot starts and require more time. This is because, during a cold start, the internal temperature of the engine is too low, making it difficult for the air-fuel mixture to vaporize and combust. Additionally, during a cold start, the engine oil temperature is insufficient, and even with the appropriate viscosity oil, the oil behaves as if it is too thick at the moment of cold start, requiring time to warm up and effectively lubricate the engine components.