What does the gear D- mean?

[MacMackenzie]

Automatic transmission D+- represents the manual mode of an automatic transmission, indicating that the vehicle is equipped with a manual-automatic transmission, which not only has automatic gear shifting function but also can simulate manual gear shifting function. Relevant information about manual-automatic transmission is as follows: The reason for the birth of manual-automatic transmission: Traditional automatic transmissions have superior operability and driving comfort, but lack the free driving experience of manual transmission models. The manual-automatic transmission was born to solve this situation, combining the advantages of both automatic and manual transmissions. The function of automatic transmission D+-: Automatic transmission D+- not only has automatic gear shifting function but also has manual gear shifting function, no longer limited by traditional automatic transmissions, allowing drivers to enjoy the freedom of manual gear shifting while also enjoying the driving comfort of automatic transmissions.

[FelixDella]

On a car, the D minus symbol in the gear shift actually represents the manual mode downshift function. I use it quite often, especially on mountain roads or downhill slopes. A quick push on the paddle or gear lever actively lowers the gear, allowing the engine to assist with braking, making driving safer and saving brake pads. This feature was designed to give automatic transmission cars the precise control over RPMs that manual transmissions offer—for example, using it during overtaking can quickly boost power response, making it more effective than just staying in D mode. However, be cautious not to overuse it, as excessively high RPMs can lead to engine overheating or component wear. My advice is to use it only when necessary and let it run automatically otherwise—don’t overcomplicate things.

[Christine]

With decades of driving experience, I can say the D- gear position is essentially a manual downshift option. It's quite handy to use – for instance, when overtaking on the highway, a quick push temporarily lowers the gear to raise RPMs, giving the car faster acceleration and noticeably improving the driving feel. This feature also enhances traction on slippery surfaces, reducing the risk of skidding. Compared to standard D mode, it adds more driver engagement, though it's not something you need to use constantly – it's mainly practical in scenarios like long descents to ease brake strain. I think new drivers can practice in safe conditions to master the timing.

[VonHaven]

As a car owner, I must remind everyone that the D minus on the gear shift is for manual downshifting, used to lower the gear while driving to increase engine braking. This is quite useful, for example, when going downhill, you can control speed without pressing the brakes too much. However, the issue is that many people misuse it, causing the engine RPM to soar into the redline zone, which may lead to component damage or unexpected acceleration. I've also heard of cases where frequent operation caused the transmission to overheat and fail. Therefore, I emphasize using it only when necessary, such as on steep slopes or special road conditions, otherwise, just let the car run automatically. Safety first, and during regular maintenance, have the technician check the transmission system's functionality.