There is some variation among manufacturers. Some wheel loaders for sale are all wheel drive (AWD), while others are four-wheel drive (4WD). You should consult the specifications of each machine in question to determine whether it is AWD or 4WD. Some wheel loaders for sale can switch between 2WD and 4WD depending on the surface conditions and tasks. Switching between 4WD and 2WD will help to conserve fuel and reduce wear on the drivetrain.