very good
Exterior: Paintwork is well-maintained; body structure shows no signs of repair; no major accidents. Interior: Clean and tidy. Safety indicator lights are normal; airbags and other passive safety features are functioning correctly; vehicle electronics are in good working order; static and dynamic equipment is complete. Driving: Ignition, starting, acceleration, cornering, deceleration, and braking are all smooth; acceleration is rapid, power output is smooth and comfortable, and there is no idling vibration. Overall: Overall vehicle condition is average. The body frame structure shows no deformation or twisting, and there are no signs of fire or water damage. There are signs of repainting, but the overall paintwork is good, ruling out major accidents. Wide field of vision, suitable for beginners; spacious, bright, and well-ventilated interior, suitable for family commuting.
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).
Based on practical risk assessment, we strongly recommend setting aside 3% to 5% of the car price as a buffer fund for even the highest-rated used cars, to cover oil changes, new tires, minor shipping scratches, and local inspection labor costs.
A proper inspection relies on equipment, not just eyes. The inspector should use a paint thickness gauge to measure 50-60 points across body panels; original paint is typically 80-150 microns. An OBD diagnostic scanner reads stored and pending fault codes across all control units, and for EVs it also reads battery state of health and charge cycle counts. The car must go on a lift for the underbody check: frame rails, suspension components, oil leaks and accident repair marks are only visible from below. A battery tester checks starting voltage and charging system health, and a tread depth gauge documents tire condition. Ask for the report to include raw readings and dated photos rather than a simple pass/fail summary - that is what makes it verifiable.
