Battery health is the single biggest risk when buying a used Chinese EV remotely. Ask for a battery report showing state of health (SOH) and cell voltage balance from the car's BMS or a diagnostic scan — anything below 85% SOH deserves a price reduction or a pass. Check fast-charge counts and whether the pack has warranty remaining; many Chinese EVs carry 8-year/150,000 km battery warranties that may or may not transfer. Verify real-world range from energy consumption history rather than the dashboard estimate. Also confirm the on-board charger works with your country's voltage, and ask whether the connected app and OTA updates will remain accessible in your region before you pay.

A solid contract is your main protection in a cross-border deal. It should specify: 1. Vehicle identification: VIN, year, mileage, trim level, and photos of the actual car appended as an annex — not just「a 2021 Toyota」. 2. Condition guarantees: no accident, no flood or fire damage, no structural repairs, supported by a third-party inspection report referenced in the contract. 3. Price and Incoterm: total amount, currency, the named port, and whether freight and insurance are included. 4. Payment schedule: e.g., 20–30% deposit after contract signing, balance against copy of the Bill of Lading. Avoid 100% upfront. Use T/T to the company's corporate bank account only — never a personal account. 5. Timeline: inspection date, estimated loading date, and latest shipment date, with remedies if delayed. 6. Dispute clause: governing law and arbitration (CIETAC or your local chamber) rather than foreign court litigation. Ask for the contract in English (or bilingual) with the supplier's company chop. A company that refuses a written contract or pushes for full prepayment is a red flag.

We will use a megohmmeter (insulation resistance tester) to measure the insulation resistance of the high-voltage bus. If the resistance value is below the national safety standard, it indicates a risk of leakage, and the vehicle will be deemed unqualified.