When evaluating a Mini Cargo Car, you must prioritize the Power System, Load Capacity, and Battery Technology. For electric versions, ensure the motor power is at least 3kW to 5kW for urban delivery, and the battery is a Lithium Iron Phosphate (LiFePO4) pack for longer life cycles and safety. The rated load capacity should typically range between 400kg and 1000kg depending on your specific logistics needs. Additionally, check for regenerative braking systems to extend range and reinforced chassis construction to handle frequent stop-and-go cycles.