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What gear should be used when going downhill with an automatic transmission?

3 Answers

DelNora

07/29/25 7:47am

When going downhill with an automatic transmission, use the L gear if available; if there is no L gear, use manual mode; if there is no manual mode, use the S gear while applying the brakes; if none of the above three options are available, you can only use the D gear. When going downhill, the L gear can utilize engine braking to control the vehicle speed, reducing the frequency of using the brakes and preventing brake fade caused by frequent braking. The lower the gear, the greater the engine's braking force. Keeping the vehicle in a lower gear results in a slower increase in speed compared to higher gears. Combined with the effect of braking, the stopping power is more noticeable and safer, effectively reducing the likelihood of accidents.

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Mallory

08/13/25 2:21am

When driving an automatic transmission car down a long slope, I always shift to a lower gear, such as L gear or manual mode's 2nd or 1st gear. This utilizes the engine's braking force to slow down, avoiding relying solely on brake pads. On long slopes, if the speed is too high, the brakes will continuously generate friction heat, which can lead to failure or even brake fade in severe cases—a common experience on mountain roads. Every time I drive on mountain highways, I proactively reduce speed and shift to a lower gear, ensuring safety and saving on brake maintenance costs. Never leave it in D gear, as the transmission will automatically upshift, causing the car to accelerate downhill, forcing the driver to brake frequently and increasing danger. Maintaining stable speed and monitoring dashboard indicators is a key point of driving knowledge.

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SanLaila

10/05/25 2:22am

When driving downhill in automatic transmission, I recommend shifting to a lower gear to control speed. Using L or manual mode allows engine braking to assist in deceleration, reducing brake load. If left in D gear, the engine provides little assistance, speed can easily surge, requiring constant brake application. Long descents may lead to brake overheating and failure, increasing accident risks. I would check the vehicle manual for recommended gears, sometimes 2nd gear is more practical. Safe driving requires diligence; also consider activating hill descent control if equipped, along with hazard lights to alert following vehicles, for comprehensive risk prevention.

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