What is the difference between D, D1, D2, and D3 gears?

1 Answers
OJayce
07/29/25 9:42am
D1, D2, and D3 refer to the lower gear modes of the transmission. While driving, you can directly shift into D1, D2, or D3 without braking, but avoid doing so when the vehicle speed and engine RPM are high. Taking a 5-speed automatic transmission as an example, in the standard forward gear D mode, the transmission shifts between gears 1-5. In D2 mode, the transmission only shifts between gears 1-2 and does not upshift to higher gears like 3-4-5. In D1 mode, the transmission stays in 1st gear and does not upshift to 2nd gear or higher. Below are the functions of the D gear: 1. Common driving position: The D gear is used for general road driving and is the most frequently used driving position. During normal driving, placing the gear in D allows the car to automatically shift between gears 1-3 (or 4). 2. High-speed overtaking: Another feature of the D gear is forced downshifting, which facilitates overtaking at high speeds. While driving in D, quickly pressing the accelerator pedal to the floor engages the forced downshift switch, automatically downshifting the gear. The car accelerates quickly, and after overtaking, releasing the accelerator pedal allows the transmission to automatically upshift.
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