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.

The standard set is: 1. Commercial invoice and sales contract - issued by the exporter; the basis for customs valuation. 2. Packing list - exporter; details the vehicle and any spare parts shipped with it. 3. Bill of lading - issued by the shipping line; your proof of ownership of the cargo. Never pay the full balance before receiving at least a copy of it. 4. Certificate of origin - issued by the China Council for the Promotion of International Trade (CCPIT); some countries require it for preferential duty rates. 5. Export customs declaration - Chinese customs; confirms the car was legally exported. 6. Pre-shipment inspection report - issued by companies like Intertek, SGS or the EAA scheme, if your country mandates it. Ask the exporter for scanned copies of all documents before shipping so you or your broker can verify completeness.

Interior wear is harder to fake than an odometer and often reveals true usage better than any document. Focus on high-contact points the seller rarely restores. The driver's seat bolster shows creasing and cracking by 80,000-100,000 km even with covers. Steering wheel leather polishes smooth and darkens with hand oils; a shiny wheel with low claimed mileage is a red flag. Pedal rubbers wear through at similar rates — check accelerator, brake, and clutch depth. Second-row wear patterns tell you how the car was used: heavy child-seat indentations suggest family use (usually gentler), while uniform rear wear with clean front suggests commercial or ride-hailing duty. Check seat rails for rust (indicates water ingress) and look under floor mats for moisture staining or musty smell — flood cars often hide it there. Also examine the infotainment and instrument cluster: Chinese EVs log usage data internally, and a dealer diagnostic readout can cross-check driving hours against mileage. Request close-up, well-lit photos of these specific points during your live video inspection rather than relying on the seller's gallery.