Why is it difficult to shift into first gear in a manual transmission car?

[HaleyRose]

Especially in northern regions, when the car temperature is low and the transmission oil is not fully lubricated; it becomes difficult to shift into first gear while moving, as the vehicle speed and gear position do not match. 1. Incomplete clutch disengagement: It is recommended to attempt shifting into reverse gear when the vehicle is stationary. If a "clicking" gear collision sound is heard from the transmission during the process of engaging reverse gear, it indicates that the clutch is not disengaging completely. After repairing the clutch, the issue can be resolved. 2. Gear shift position: If shifting into reverse gear is smooth but only first gear is difficult to engage, it is recommended to visit a specialized repair shop to adjust the gear shift position and replace the transmission oil, which can also resolve the issue. For manual transmissions, when shifting at low speeds, the clutch must be able to disengage completely to smoothly engage the corresponding gear.