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What does D3 mean in an automatic transmission car?

1 Answers

StJeremiah

07/25/25 6:25am

D3 in an automatic transmission car means locking the gear in the 3rd gear, where the vehicle can automatically switch between 1st, 2nd, and 3rd gears, but cannot exceed the 3rd gear. Automatic transmissions also have D1 and D2. D1 means manually locking the car's gear in the 1st gear, not controlled by the car itself; D2 means manually locking the gear in the 2nd gear, not exceeding the 2nd gear, allowing the car to automatically switch between 1st and 2nd gears. An automatic transmission eliminates the need for the driver to manually shift gears, as the vehicle automatically selects the appropriate gear based on driving speed and traffic conditions. Generally, automatic transmission cars have six gear positions, from top to bottom: P, R, N, D, S, L.

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