A vehicle allocation system includes for allocating, through autonomous driving, an allocation vehicle selected from a plurality of selection target vehicles is provided. Each of the plurality of selection target vehicles includes an electronic controller configured to perform hydraulic pressure control learning and autonomous driving control of a power transmission device in which a plurality of shift stages are established by combination of a plurality of hydraulic engaging devices. The at least one processing circuitry is configured to select a vehicle in which a progress degree of the hydraulic pressure control learning is low as the allocation vehicle from the selection target vehicles, based on progress degrees of the hydraulic pressure control learning before the vehicle allocation.