The lifespan of rubber sealing strips for frameless doors is usually only 4-5 years. We carefully press the sealing strip at the edge of the roof to check for loss of elasticity and use a high-pressure water gun to wash the seams of the windows to check for direct water leakage due to aging.

Yes. The inspection report includes a specific "consumable parts consumption list." We will measure the tire tread depth (in millimeters) and the remaining brake pad thickness using calipers. If the tire tread is below the legal wear limit of 1.6mm, we will note it as "recommended to replace immediately upon arrival."

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).