What are the top ten largest civilian vehicle fleets in the world?

The top ten largest civilian vehicle fleets in the world typically include companies like UPS, FedEx, and Amazon, which operate extensive delivery and logistics fleets. Other notable fleets belong to organizations such as the U.S. Postal Service, the military (for civilian contracts), and large rental car companies like Enterprise and Hertz. Additionally, government agencies and public transportation systems in major cities, such as London and New York, contribute significantly to large civilian fleets. However, specific rankings can vary based on vehicle type and operational scope.