What are the reasons for a car not starting in cold weather?

[DeGideon]

Reasons for a car not starting in cold weather: 1. In winter, the temperature is lower, and the viscosity of the engine oil increases, leading to slower flow and increased engine resistance, making it harder to start the car. It is recommended to use winter-specific engine oil; 2. The battery capacity decreases under low-temperature conditions, and after some use, the starting voltage may become low. The battery electrolyte should be replenished in time, or a new battery should be replaced; 3. Water vapor from engine combustion freezes at the muffler of the exhaust pipe. This situation often occurs in vehicles with low usage frequency and short-distance driving. Additionally, damage to the three-way catalytic converter can also cause difficulty in starting.