What are the reasons when the car is in normal condition but fails to start?

[SanChase]

Here are the specific reasons why a car may fail to start despite appearing normal: Battery depletion When the car battery is depleted, it can result in failure to start the vehicle. Battery failure, prolonged use of air conditioning, and other factors can lead to battery depletion. Low temperatures In cold winter weather, cars often experience difficulty starting. This is because in low-temperature environments, the viscosity and rotation speed of the car's engine oil decrease, leading to reduced ignition energy from the battery and difficulty in forming flammable gases, making it hard to start the car. Carbon buildup in the car There are many reasons for engine carbon buildup, such as excessive water content in gasoline, poor fuel quality, and poor sealing of the valve seat rings.