Vehicle management method and server

The invention provides a vehicle management method and a server. A vehicle management method for managing a power storage device provided in a vehicle includes: obtaining a first cost corresponding to a first degree of deterioration of the power storage device evaluated by a first method during an evaluation period (S21); when a second degree of deterioration of the electricity storage device evaluated during the evaluation period by a second method having higher measurement accuracy than the first method is obtained, a second cost corresponding to the second degree of deterioration is obtained (S23); if the second cost is lower than the first cost, specifying the second cost as a renting cost for the renting subject period (S31); if the second degree of degradation evaluated during and before the evaluation period is not obtained, the first cost is determined as the lease cost for the lease target period (S33). 本发明提供一种车辆管理方法及服务器。对车辆具备的蓄电装置进行管理的车辆管理方法包括如下步骤：求出与通过第1方法在评估期间评估出的蓄电装置的第1劣化度对应的第1费用(S21)；在取得了通过测定精度比