How to Use the D123 Gears in an Automatic Transmission Car?

[IsabellaRose]

The methods for using the D123 gears in an automatic transmission car are: 1. Use D2 gear when starting the vehicle, and shift to D gear when the speed exceeds 20 km/h; 2. D1 gear is for heavy loads, used when the vehicle starts with a heavy load or climbs a slope; 3. D3 gear is for overtaking, suitable for stop-and-go driving in urban areas. The correct method for starting an automatic transmission car is: 1. After igniting the car, press the clutch pedal all the way down with the left foot to completely disengage the clutch; 2. Shift the transmission to first gear; 3. Press or lift the electronic handbrake button; 4. Ensure safety by observing road vehicles and pedestrians; 5. Continue pressing the clutch pedal with the left foot to keep the clutch disengaged, press the accelerator pedal with the right foot, and slowly release the clutch pedal with the left foot.

[OscarRose]

When driving an automatic transmission car, I primarily use the D (Drive) mode for daily commuting, as it allows the transmission to shift gears automatically, making it particularly convenient for city driving or flat roads. However, when encountering steep slopes or special road conditions, I switch to manual mode (numbered gears) for better control. For example, when climbing a long slope, I shift to 2nd or 3rd gear to maintain higher engine RPMs, ensuring stronger power output and preventing stalling. On downhill sections, I switch to 1st or L (Low) gear to utilize engine braking, which helps slow the vehicle and prevents brake overheating or failure. For regular city driving, D mode is sufficient, but remember to reduce speed before shifting to manual mode to avoid potential transmission damage. With over a decade of driving experience, I’ve found this technique especially useful in mountainous areas or during rain/snow conditions—enhancing safety while protecting the vehicle's components.

[HopeLynn]

As a driver who frequently navigates mountain roads, I'm accustomed to using D gear for general road conditions, but rely on manual mode for steep slopes. When climbing, I switch to 3rd or 2nd gear to lock in mid-to-low gear ratios, maintaining stable engine RPMs to prevent rollback. For descents, I downshift to 1st gear to utilize engine braking, reducing brake wear. Years of experience have taught me this technique works well for icy conditions or when towing trailers - simply move the gear lever without additional braking for more responsive vehicle control. Always verify gear selection on the instrument cluster to prevent misoperation. Proper application of this method can extend overall vehicle lifespan.

[MacAlana]

I haven't been driving an automatic transmission for long, but I've learned that D (Drive) is the normal driving gear, while the numbered gears 1, 2, and 3 allow manual gear limitation. On flat roads, I usually just use D gear for convenience; if climbing a steep hill with insufficient power, I switch to gear 2 to increase torque; on long downhill slopes, I shift to gear 1 to assist with deceleration. The key is to slow down when shifting gears. Most of the time, just using D gear is fine, and the numbered gears can be used for special situations.