What gear should a car be in when going downhill?

[McLola]

When a car is going downhill, the gear selection depends on different situations: 1. For manual transmission cars, shift into 2nd or 3rd gear; 2. For automatic transmission cars, shift into L gear. If there is no L gear, you can shift into M gear and then manually downshift when going downhill. The techniques for operating a car when going downhill are: 1. Reduce the speed to allow the vehicle to enter the downhill slope at a slow speed; 2. Shift into the appropriate gear, and it is strictly forbidden to shift gears after entering the downhill section; 3. Coasting in neutral is strictly prohibited, and the appropriate gear must be engaged. The effects of coasting in neutral downhill include: causing severe wear on internal engine parts and generating a large amount of heat, leading to carbonization of the engine oil and a significant decrease in lubrication.

[MacLucas]

I remember once driving down a steep mountain road without using a lower gear, relying solely on the brakes to slow down. The brake discs ended up smoking, and it nearly caused an accident. Since then, I always use 2nd or 3rd gear when driving a manual transmission car to control speed—this is called engine braking, where the engine naturally slows the wheels, reducing brake pressure significantly. For automatic transmission cars, I switch to manual mode and select lower gears like L or S. This is especially important on long descents or in rainy conditions, as continuous braking can lead to overheating and failure, compromising safety. When driving normally, it's good practice to slow down to a reasonable speed before descending, then shift gears to maintain stability and reduce the risk of accidents. The benefits are numerous: it protects the braking system and saves fuel. With practice, it becomes second nature.

[StPeter]

I think using a lower gear when going downhill is a clever design, utilizing the engine's compression resistance to help slow down the wheels. For manual transmission cars, shifting into 2nd gear is best—higher RPMs can help maintain speed. As for automatic cars, if they have manual shift mode, switch to the lower gear range, or use a dedicated downhill gear like L. The principle is that the engine acts in reverse when no throttle is applied, naturally slowing down and avoiding brake wear. From personal experience, it works well on short descents and is especially effective on long ones, preventing brake overheating and skidding. Every time I head to mountainous areas, I operate this way, feeling more stable control. Remember not to stay in D gear and brake too hard—safety first, this way driving is more worry-free.

[GiselleMarie]

For frequent mountain driving, it's advisable to shift to a lower gear when descending. Manual cars should shift to 2nd gear; for automatic cars, use manual mode to select a lower gear. Avoid constant braking and let engine braking assist in slowing down. Adjust speed and gear before starting the descent for a relaxed and safe drive. Maintain a safe distance as a precaution.

[MacDamian]

I've experienced a few downhill runaway situations, and now I've learned my lesson—shifting to a lower gear is the most reliable method. For manual transmissions, downshifting to 2nd gear when going downhill allows the engine to naturally slow the speed. For automatic transmissions, use the L or S mode if available. The advantage is that the brakes won't overheat and fail, especially on long downhill stretches. Once on a slippery slope, I almost skidded relying solely on the foot brake—it was terrifying. Since then, I've developed the habit of anticipating the gradient and shifting gears accordingly, making speed control smoother. It also saves on repair costs, as engine braking requires less maintenance. Remember to gently press the pedal and avoid sudden acceleration.

[AlanaFitz]

I believe downhill gear selection depends on the vehicle type. For manual transmissions, use 2nd or 3rd gear to decelerate; for automatics, switch to manual mode and select a lower gear, or use L/S mode for assistance. The engine braking mechanism helps slow the wheels, reducing brake usage, especially on steep or rough roads. Having driven many long-distance trips, this method has prevented several minor accidents and extended brake life. For daily driving, decelerate first before shifting gears to maintain smoothness. For safety, don't forget to check vehicle conditions like tire pressure.