Why Does the Vehicle Always Roll Backward When Starting?

[DiJameson]

There are two main reasons why a vehicle tends to roll backward when starting: 1. Manual transmission cars: Rolling backward in a manual transmission car during startup is usually caused by improper operation by the driver. Normally, you should first release the clutch and wait until the car's forward driving force counteracts the backward gravitational force before releasing the brake, which will reduce the rolling. 2. Automatic transmission cars: There is a time interval when switching from the brake pedal to the accelerator pedal during startup. Even after pressing the accelerator pedal, it takes some time for the car's driving force to increase enough to counteract the gravitational force. In such cases, engaging the D gear on a small slope may help prevent rolling backward.