While an ATV and a UTV will share many similarities, they are distinctly different vehicles intended for very different uses. An ATV, or all terrain vehicle, is an off-road, single-rider vehicle intended for use as a recreational vehicle, racer, or transport over rough terrain. A UTV, or utility task vehicle, is also intended for use over rough terrain, though this vehicle is sometimes known as a side-by-side because two people can sit in the cab next to each other. Both can be used to haul items, but a UTV features a truck-like bed specifically for this purpose.
Both vehicles typically feature a combustion engine — some models do feature electric engines instead, but these are intended for light duty use only — and both feature significant suspension and aggressive tires. They also generally feature a low center of gravity for added stability over rough terrain. The differences between an ATV and a UTV become clear with a simple glance at the rider positions: an ATV rider will straddle the vehicle on a saddle, while UTV riders can sit on side by side on bench seats or bucket seats.