Which gear should be used for an automatic transmission car when going uphill?

[DelKyle]

When driving an automatic transmission car uphill, if the slope is not very steep, using the D gear is completely sufficient. If the slope is very steep, you can use the L gear to provide the car with greater traction to ensure a successful climb. It's important to note that the L gear in an automatic transmission car is a low gear, equivalent to the first or second gear in a manual transmission car. You should not engage the L gear when the car is moving at high speed, as this can cause impact to the transmission. However, you can directly shift from the L gear to the D or S gear while driving. Many automatic transmission cars do not have an L gear but have an S gear instead. The S stands for Sport mode, and using the S gear when going uphill is also acceptable. The throttle response in an automatic transmission car becomes more sensitive and active when using the S gear, making uphill driving easier. When driving an automatic transmission car uphill, it's crucial not to accelerate too quickly or aggressively, as this can lead to wheel slippage or gear shifting issues, potentially causing dangerous situations.

[VanRhett]

I've been driving in mountainous areas for over 30 years, and I always switch to lower gears when going uphill, such as the L or 1st and 2nd gears on the gearshift. This allows the engine to output more torque, preventing any sense of strain or rolling back. When driving older cars without many automatic assistance features, I had to rely solely on downshifting to control speed. If the slope was steep, it was easy to lug the engine, so I always shifted gears in advance. Nowadays, most new cars come with hill-start assist systems, but I still maintain good habits: slowing down before ascending, shifting gears, and gently pressing the throttle to maintain speed. I remember once on a steep winding mountain road where I couldn't stop and almost rolled into the roadside ditch—since then, I've been even more cautious. The key is safety first; don't just rely on D gear. Using lower gears on long or steep slopes makes driving much easier.

[DelKathryn]

As a new driver, I was worried about rolling back during my first uphill drive. After checking online tutorials, I learned to switch to manual mode or the 2nd gear position on the gear lever. My instructor taught me that using only D gear in an automatic car isn't suitable for uphill driving—the engine response can be slow, leading to insufficient power and potential rollback. Now during practice, I always find a gentle slope to test gear shifting, like starting in 1st gear for a steadier feel, and occasionally check tire pressure to prevent slipping. Remember, the vehicle manual provides guidance, as gear markings vary by model; some cars use S gear (sport mode) for better uphill performance. New drivers shouldn't stress too much—with gradual practice, you'll master the rhythm.

[ThomasMarie]

After inspecting countless vehicles, it was found that not using lower gears like L or 1 when climbing hills can easily exacerbate wear and tear, such as overloading the driveshaft or transmission. Over time, repair costs multiply. Mechanics generally recommend manually shifting to lower gears to stabilize engine RPM, combined with brake assist systems to prevent rollback or overheating. The key lies in regular maintenance of drivetrain components, ensuring unobstructed oil passages and sufficient tire tread depth to enhance traction. Simple actions can prevent major issues, saving both hassle and money.