A system and related methods for management, planning and control of a connected fleet of vehicles. A unique, single integrated platform may be provided for management, planning and control of a connected fleet of vehicles, including fleet planning, in-fleeting operations, vehicle acquisition and provisioning, vehicle assignment, vehicle transfers, vehicle use operations, vehicle servicing, vehicle maintenance and repairs, and de-fleeting operations. Fleet communications can be by cellular, wireless, or low earth orbit satellite communications. Fleet vehicles include a programmable TCU installed in the vehicle and connected, directly or indirectly, to the CAN bus or similar vehicle network, and carries out various operations, including controlling vehicle access. The systems combines self-reporting and self-management of a connected fleet vehicle (with on-board and installed sensors configured to identify actual or potential issues or problems in the vehicle, and report, request, and obtain/dispatch servicing via its cloud or network communications interfaces), and predictive failure algorithms (based on historical and current connected fleet vehicle data), with multiple probabilistic distributions for the distributed fleet to dynamically, in real time, determine and dispatch service with greater efficiency and lower costs for fleet operations.