Engaging a vehicle’s four-wheel drive high setting alters the drivetrain to deliver power to all four wheels, enhancing traction on loose or slippery surfaces such as gravel, dirt, sand, or snow. This system is typically not designed for high-speed driving on dry, paved roads. While technically possible to achieve highway speeds, doing so can strain the drivetrain components, negatively impacting fuel efficiency and potentially causing damage. Furthermore, the turning radius is often affected, making tight turns at higher speeds more difficult.
The primary advantage of this drivetrain configuration lies in its ability to navigate challenging terrains safely at moderate speeds. Historically, four-wheel drive systems were primarily found in off-road vehicles and trucks. However, the technology has become increasingly common in SUVs and crossovers, providing drivers with added confidence and control in adverse weather conditions or on unpaved roads. This capability significantly improves vehicle stability and minimizes the risk of getting stuck, particularly in situations where two-wheel drive would be insufficient.