An all-terrain vehicle (ATV) equippable with a plurality of ground-engaging wheels or a plurality of ground-engaging track assemblies providing traction on the ground. The ATV is designed to facilitate its use whether it is equipped with the ground-engaging wheels or the ground-engaging track assemblies. A powertrain, a steering system, a suspension, a braking system, a body, and/or other components of the ATV have features which take into account that the ATV can be equipped with either the ground-engaging wheels or the ground-engaging track assemblies.