What Causes the Jerking Sensation in a Manual Transmission Car?

[Sara]

It is caused by the difference in gear ratios. Root cause: The lower the gear, the larger the gear ratio, and the more pronounced this phenomenon becomes. First gear has the largest gear ratio. The gear ratio is the ratio of the driving wheel's speed to the driven wheel's speed. In first gear, the input shaft rotates several times before the output shaft completes one rotation, equivalent to a small gear driving a large gear. Thus, the small gear requires minimal force to rotate. Solution: If shifting at higher gears, releasing the clutch slightly faster can reduce wear. For lower gears, to minimize jerking and improve comfort, it is advisable to release the clutch more slowly.