4 Hi Gear Box

A 4-speed gear means the car can move between four different ranges of speed and RPM. Internal mechanism of a 4-speed auto gearbox. A transmission is a complex component that allows the engine to run at various speed ranges. For example, it allows the car to run at 10, 20, 45, and 60 kilometers per hour at 1,000 RPM.VThis means that power is going to all four wheels instead of just two, and work to increase traction. 4×4 high and low are meant for two different kinds of driving scenarios and driving speeds. But both of them are very useful for tackling rough weather and difficult driving situations.You'll use 4th gear in a car for: Gaining speed after changing from 3rd gear. Driving around towns and cities at a speed of around 30 mph or so. Gaining a little more power or acceleration by changing down from 5th or 6th gear.Without an Auto setting, 4WD High is what you'd use in any situation that's low-traction but relatively high-speed—a dirt road or snowy paved road. 4WD Low is strictly for slow off-roading or places where torque multiplication would really help you out (like deep sand)