What gear should you use when driving down a steep hill?

Using low gear when driving down a steep hill is the correct choice because it helps to control the vehicle’s speed and maintain stability. When the vehicle is in low gear, the engine is engaged more directly with the wheels, allowing for better engine braking. This reduces the reliance on the brakes alone, which can overheat and fail if used excessively on steep descents.

In low gear, your vehicle can maintain a slower, safer speed, providing greater control over your descent. This is particularly important on steep hills, where gravity can cause a vehicle to accelerate uncontrollably if not properly managed. By using low gear, you can effectively use the engine's resistance to slow the vehicle, adding an additional layer of safety.

On the other hand, using neutral disallows the use of engine braking and could lead to a loss of control. High gear or overdrive is designed for flat, high-speed driving and would not provide the necessary control needed when navigating steep declines, making these options unsuitable for this scenario.