A 4x4 drive system, also known as four-wheel drive (4WD), allows all four wheels of a vehicle to receive power from the engine simultaneously. This feature enhances traction and stability, making it ideal for off-road conditions, such as mud, snow, or rocky terrain. There are two main types of 4x4 systems: full-time and part-time. Full-time 4x4 drives distribute power to all wheels at all times, while part-time systems allow the driver to switch between two-wheel drive (2WD) and 4WD as needed. This versatility makes 4x4 vehicles popular for both adventure and everyday driving.