We maintain an absolute skeptical attitude. In addition to regular visual inspections, we focus on checking for sediment accumulation around the sunroof drainage channels and look for water stains under the A-pillar trim and front floor mats. This is the only effective physical evidence to determine if the sunroof drainage holes are blocked, leading to hidden leaks.

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

We will carefully check if the chassis number on the windshield, chassis, and door frame matches.