To provide a vehicle management system capable of highly accurate estimation of a remaining period of a lighting device.SOLUTION: A vehicle management system 1 includes a storage device 55 in which a lighting-enabled time based on a change feature is registered for each change feature group which is classified based on the similarity in change feature over time of lighting times of a plurality of lighting devices 11 of the same type installed in a plurality of vehicles 10, a change feature calculation unit 43 that calculates a change feature of a lighting time of a lighting device 11 as a calculation target based on the lighting time of the lighting device 11 as the calculation target in a remaining period, and remaining period calculation units 44, 45 for calculating a remaining period in which lighting of the lighting device 11 as the calculation target is possible, by using the lighting-enabled time based on the change feature registered in the storage device 55 which is similar to the change feature of the lighting time of the lighting device 11 as the calculation target, and the accumulated lighting time of the lighting device 11 as the calculation target.SELECTED DRAWING: Figure 1