Why is it difficult to shift gears in a manual transmission?

[MacElliott]

The reasons for difficulty in shifting gears in a manual transmission are: 1. Incorrect operation by the driver, where the speed does not match the gear; 2. Clutch malfunction, causing insufficient clutch disengagement travel, resulting in incomplete clutch disengagement and inability to engage the gear; 3. Old transmission oil, leading to reduced lubrication effect, thus making it difficult to shift gears. The gears in a manual transmission car are: 1. First gear is the starting gear, used for vehicle start-up; 2. Second gear is the passing gear, used for navigating complex road surfaces and handling complex situations; 3. Third gear is the transition gear, used for low-speed driving on urban roads; 4. Fourth gear is the driving gear, used for prolonged high-speed driving; 5. Fifth gear is the high-speed gear, used for long-distance highway driving.