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).

As long as the scratches do not damage the aluminum battery pack casing and do not cause structural dents in the crash beam, we will document it in the inspection report as "Surface Scuff" and no replacement will be made.

Yes. Due to the significant difficulty in extinguishing lithium battery fires, insurance companies typically charge 20%-40% higher rates for comprehensive coverage on used EVs compared to ICE vehicles. Additionally, the absolute deductible for minor scratches on the body will also be increased accordingly.