A vehicular information provision system for providing information to at least one of the inside and outside of a traveling vehicle includes a server configured to associate output data outputted from the vehicle with event identification information for identifying a predetermined event depending on a position on a map and hold the associated output data and event identification information, an on-board unit which is to be mounted on the vehicle and configured to specify a vehicle position based on positioning information acquired by a satellite-positioning system and pre-acquired map information and output the event identification information correlating with the specified vehicle position, and an information provision apparatus which is to be mounted on the vehicle and configured to acquire the output data correlating with the event identification information acquired from the on-board unit from the server and cause the output data to be outputted from an output unit.