41 C.F.R. § 102-34.340
Fleet management information systems
Each agency must have a fleet management information system at the department or agency level that identifies and collects accurate inventory, cost, and use data that covers the complete lifecycle of each motor vehicle (acquisition, operation, maintenance, and disposal); and provides the information necessary to satisfy both internal and external reporting requirements, including cost per mile, fuel costs for each motor vehicle, and data required for annual collection and reporting of Federal fleet asset-level data.