Odometer fraud exists everywhere, but cross-checking several data points makes it hard to fake: 1) Maintenance records: ask for service history with mileage entries. Gaps or resets are red flags. 2) Tire wear: a car showing 30,000 km should not have nearly bald tires. Compare tread depth against the claimed mileage. 3) Pedals, steering wheel, and seat bolsters: heavy wear on these with low odometer readings is a classic mismatch. 4) Diagnostic scan: request an OBD readout. Many control modules store mileage data internally — if the ECU shows 120,000 km while the dash shows 40,000, you have your answer. 5) Vehicle history report: in China, apps and platforms can pull insurance claim records and registration history, which often reveal the true mileage trail. Always request a live video showing the odometer with the engine running, and have the number written into your contract.

The 12V battery is small but critical: when it dies, the car cannot start, unlock, or charge. Used EVs often have weak 12V batteries because they sit on lots for months. Before shipping, ask the exporter to: 1. Measure the battery voltage after the car has rested overnight. It should read around 12.4-12.8V; anything under 12.2V means the battery is degraded. 2. Start the car and check that the charging system holds 13.8-14.4V, confirming the DC-DC converter works. 3. Scan for stored fault codes related to low voltage, which indicate the battery has been deeply discharged repeatedly. During ocean freight, the battery slowly self-discharges. Ask that it be disconnected or kept on a maintainer before loading, and budget for a replacement after arrival if the battery is over 3 years old. A new 12V battery costs little compared to being stranded at the port.

Vetting takes a day and can save you thousands. Work through this checklist. Verify the business: ask for the company registration number and check it on China's National Enterprise Credit Information system or a commercial registry tool. Confirm the registered address matches where they claim to operate, and that their business scope includes vehicle export. Check export credentials: they must hold a used-vehicle export license issued by Chinese commerce authorities. Ask for the license and a recent export declaration showing they actually ship cars. Test their knowledge: a real exporter answers detailed questions about your destination country's import rules (age limits, left/right-hand drive, emission standards) without hesitation. Vague answers about your own country's requirements are a red flag. Structure payments safely: small deposit (10-20%), balance only against inspection reports and shipping documents, ideally through a payment method with recourse. Refuse full prepayment by irreversible transfer—no legitimate exporter requires it.