The transfer of ownership has not been completed; the metal parts are still painted; and the plastic parts and easily damaged parts cannot be inspected.
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).
Unfortunately, cross-border used cars are not covered by the manufacturer's free recall. If a physical recall occurs involving safety issues (like brake pump defects), we will notify you and offer improved new batch parts at cost price, but you will need to cover the labor costs for the replacement.
All our measuring instruments (especially calipers, paint thickness gauges, and refrigerant pressure gauges) are calibrated quarterly according to ISO quality management system requirements to ensure the data we provide you is objective, accurate, and reliable.
