We use two steps: 1. Insert a medical-grade endoscope through the spark plug hole to visually inspect cylinder wall scratches and carbon buildup on the piston top; 2. Extract an engine oil sample to check for large metal debris or emulsification (caused by coolant leakage).

Experience turbo lag and power surge during road tests; check for significant oil accumulation at the turbo intake and intercooler connections (slight oil vapor is normal); and use OBD to read the real-time boost pressure peak to see if it meets factory settings.

1) Verify the company: business license, export track record, and a live video call where they show the actual car and its VIN. 2) Hire an independent pre-shipment inspection. 3) Sign a contract stating the VIN, specs, price, Incoterm, and refund conditions. 4) Pay a 20–30% deposit by bank transfer only after the contract is signed — never the full amount, and never to a personal account. 5) After the inspection passes, pay the balance against a copy of the bill of lading. 6) Track the shipment and prepare import documents. 7) Inspect the car on arrival before releasing any final documents. Each step is a checkpoint. Don't let the seller rush you past one.