A 4x2 truck is a two-wheel-drive vehicle with a total of four wheels, where the torque gets delivered to two wheels, and those two wheels power the car. This means that only two of the wheels are being given torque, which can either be given to the front wheel axis or the rear wheel axis. In contrast, a 4x4 truck is a four-wheel-drive vehicle where all four wheels are being given torque. The specific type of drivetrain determines which wheels receive torque on a 4x2 or 4x4 vehicle.