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).

We will directly check the registration certificate (the big green book) and count the number of changes.

Yes, but you must provide a legally certified Power of Attorney (POA) authenticated by your country's notary or embassy. Contracts signed without legal authorization will not be recognized by our Ministry of Justice.