Odometer rollback happens everywhere, so never trust the dashboard number alone. Cross-check at least three sources: 1. Maintenance records: Chinese 4S dealerships keep service logs tied to the VIN. Ask the exporter for screenshots showing recorded mileage at each visit — the numbers should rise consistently. 2. Inspection reports: China requires periodic emissions/safety inspections, and the mileage is logged at each one. The exporter can pull the car's inspection history. 3. Tire and wear clues: Compare the claimed mileage with brake pedal rubber, steering wheel shine, seat bolster wear, and the tire production dates. A car showing 30,000 km with a polished steering wheel and second set of tires is suspicious. Also check the dashboard for uneven digits or scratches around the odometer area in photos. If maintenance and inspection records roughly agree, the reading is usually trustworthy; if the seller refuses to share records, treat the mileage as unknown and negotiate accordingly.

For dealers who purchase the same brand models in bulk over a long term, we can coordinate senior technicians domestically to offer paid, regular Zoom video technical Q&A to resolve the issues you encounter locally.

The technician will start the vehicle and turn on the air conditioning system, measuring the actual temperature at the vents at the lowest and highest settings with a thermometer; at the same time, they will connect a manifold pressure gauge to check if the refrigerant pressure in the high and low pressure lines is within the normal range, determining if there is a chronic refrigerant leak.