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What gear should be used for downhill driving in an automatic transmission car?

1 Answers

AnaRose

07/29/25 10:02pm

When driving downhill with an automatic transmission, you can choose a gear that limits upshifting. Automatic transmission cars are not limited to just the D (Drive) gear for moving forward; they also have the L (Low) gear, which helps utilize engine braking. Some automatic transmission cars come with a manual mode, allowing you to downshift manually. Additionally, many SUV models are equipped with an HDC (Hill Descent Control) feature, which can be activated on steep downhill sections to automatically slow the vehicle without needing to press the brake pedal. The car will descend at a very slow speed, and the driver only needs to steer. Using D gear for downhill driving: In reality, using D gear for downhill driving is not inherently problematic, as the automatic transmission's gear shifting is entirely controlled by the vehicle's computer. If you continuously press the accelerator, the speed will increase, and the computer will interpret this as a need to accelerate, thus upshifting accordingly. Braking to slow down: If you brake to slow down, the transmission will downshift. However, manual mode in an automatic transmission can limit both upshifting and downshifting. For example, shifting from D gear to L gear engages a low-speed mode, where even if you press the accelerator continuously, the vehicle speed will not increase sharply.

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