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Does Reversing in D Gear on an Uphill Damage the Car?

1 Answers

Davis

07/29/25 11:39am

Reversing in D gear on an uphill can damage the car's transmission and may also result in a collision with the vehicle behind. Here are specific details about precautions to take on an uphill: Preventing Rollback: Starting on a slope with an automatic transmission isn't entirely automatic. When an automatic car is in D gear and the brake is released, there is a certain amount of forward torque that prevents movement while the brake is applied. Upon releasing the brake, the car will gradually start moving. Therefore, on a gentle slope, the car won't roll back. However, on a steep slope, the idle forward torque isn't sufficient to counteract the vehicle's weight, and the car will definitely roll back. The method to start on a slope is to accelerate immediately after releasing the brake, which can stop the slight rollback and allow the car to move forward. Be cautious of the distance to the vehicle in front. Stalling During the Process: Stalling in D gear on an uphill occurs because the slope is too steep, and the transmission ratio in D gear is insufficient. In such cases, it's necessary to shift to 2nd gear or even 1st gear. These lower gears have a higher transmission ratio and greater torque, enabling the engine to overcome the vehicle's weight on a steep slope, maintain engine speed, and prevent stalling.

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