To prevent intermittent failures due to aging of the resistance wire, we will start the engine and set the seat heating/ventilation to maximum for at least 5 minutes, confirming significant temperature changes or airflow output in the cushion and backrest using an infrared thermometer or body sensor.

Air suspension is very delicate. If, after the vehicle has been stationary for about 12 hours, the height on one side of the vehicle drops more than 1.5 cm when measured from the wheel arch to the tire, we will determine that there is a slight air leak in the air spring or distribution valve on that side and warn you of the high subsequent repair costs.

A proper pre-shipment inspection is more than photos — it is a documented technical examination covering four areas. 1. Structure: paint thickness readings across the body, weld inspection of pillars and chassis rails, rust assessment underneath. 2. Mechanical: engine compression or at least a cold-start video, transmission shifts through all gears, suspension noise test on uneven roads, brake pad and disc thickness measurements. 3. Electronics: full OBD diagnostic scan with printed fault codes, all lights, windows, AC, infotainment, and driver-assistance functions tested. 4. Documentation: VIN and engine number physically matched to the registration certificate, photos of the certificate itself. Insist on a written report with photos, measured values, and a clear pass/fail conclusion per section. Make final payment conditional on this report, not on the seller's word or showroom-condition photos.