What are the consequences of mismatched gears and speeds?

[AdamFitz]

If the speed does not match the gear when shifting, the car will become very rough to drive. When driving at high speeds in a low gear, not only will the driving feel very sluggish, but fuel consumption will also increase. Consequences: If this situation occurs during a test, it will result in failing the test. During the process of obtaining a driver's license, each gear shift must pass through the neutral sensor to receive a signal. If this is not done when shifting gears, or if the speed and gear cannot match properly, the test will have to be retaken. After obtaining the driver's license, frequently doing this in actual driving will increase wear and tear between the transmission gears and cause certain damage to the clutch. The impact on the car is very serious. The consequence of high gear at low speed is causing the car to stall and the engine to shake. Precautions: Shift gears smoothly. Shift as soon as the speed is reached, and do not drag the gear, as it will cause the car body to shake. Do not look down when shifting gears. Shift gears step by step. If the wrong gear is engaged, do not panic; you can return to the original gear and shift again.