Buyers must prioritize the Powertrain and Battery Technology (for EVs, focus on Lithium Iron Phosphate/LFP for longevity or Ternary Lithium for range). For ICE vehicles, verify Emission Standards (e.g., Euro VI or China VI) to ensure legal operation. Key performance metrics include Max Torque, Payload Capacity, and Energy Consumption ratios. Always request Technical Data Sheets to verify that the Chassis Strength and Suspension System meet the intended usage scenarios, such as heavy-duty logistics or passenger transport.