An internal combustion engine for a vehicle can include a crankcase, and a supercharger disposed behind the crankcase in a front-to-rear direction of the vehicle body. A throttle body and an intercooler are connected in the front-to-rear direction, to an intake passage of the engine. The intake passage extends a rearward from a cylinder head, and the cylinder head protrudes substantially upward from the crankcase. The throttle body and the intercooler are connected in this order, in the front-to-rear direction.