What does the M gear with plus and minus mean?

[OFaith]

M gear with plus and minus refers to the manual mode of an automatic transmission, where plus means upshifting and minus means downshifting. The usage of M gear includes: 1. During overtaking, it can utilize the high torque of lower gears to accelerate quickly, completing the overtaking action faster; 2. When going downhill, it can fully utilize engine braking to reduce speed; 3. During high-speed driving, it allows for quick acceleration and can use engine braking during emergency braking; 4. When taking curves, it can use engine braking to decelerate. The functions of a transmission are: 1. To change the gear ratio to meet the traction needs under different driving conditions; 2. To enable reverse driving; 3. To interrupt power transmission to the drive wheels when the engine starts, idles, the car shifts gears, or needs to stop for power output.