Off-Road Vehicle

An off-road vehicle includes a frame, a plurality of wheels, a prime mover assembly with an engine, and a drive train having front and rear differentials. The engine body defines a cylinder axis which slants upwardly and rearwardly, with a cylinder head mid-point defined where the cylinder axis intersects an exterior surface of the cylinder head. A cylinder front line running within the longitudinal mid-plane between the front differential output axis and a projection of the cylinder head mid-point on the longitudinal mid-plane has a cylinder front line length L1, cylinder rear line running within the longitudinal mid-plane between the rear differential output axis and the projection of the cylinder head mid-point on the longitudinal mid-plane has a cylinder rear line length L2, and a ratio of the cylinder front line length L1 to the cylinder rear line length L2 is in the range from 0.4 to 1.8.