This is a typical case of "secondary damage caused by unprofessional rescue." Many hybrid vehicles require access to "maintenance mode" via engineering computers to allow the water pump to run at full speed for exhaust. We do not bear any moral or financial responsibility for cylinder damage caused by local technicians' misoperation.

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).

To ensure the legal rights of both parties, the "International Used Car Sales Contract" we signed is in both Chinese and English. Generally, the contract is governed by Chinese law. All liabilities for breach of contract and force majeure clauses will be clearly defined in the contract.