Due to legal restrictions preventing unregistered vehicles from high-speed driving on public roads in China, most of our dynamic tests are conducted in a closed area (with a maximum speed of around 60 km/h). This is sufficient to test for suspension noise and low gear smoothness, but it cannot simulate high-speed wind noise and tire balance vibrations at 120 km/h.

China's vehicle data is less centralized than in the US or Europe, but you can still verify a lot: 1. Ask the exporter for the VIN and order a third-party history report from Chinese services; they aggregate insurance claims and repair records. 2. Cross-check the registration date on the title with the odometer—a 3-year-old car showing 30,000 km but registered as a ride-hailing vehicle is a red flag. 3. Request maintenance records from the brand's dealer network; digital records are increasingly common. 4. Verify the seller legally owns the car: the registration certificate name should match the exporter's business license. Gaps are common, so treat the history report as one input, not proof. Combine it with an independent pre-purchase inspection, and hold back part of the payment until the inspection passes.

Obtaining precise internal resistance at different SOC levels requires disassembling the battery pack and connecting it to a professional charge-discharge cabinet for several days of cycling tests. This is beyond the scope of non-destructive used car inspections; we only provide real-time estimated internal resistance data based on OBD port readings.