For gasoline cars, insist on a compression test: each cylinder should read within 10-15% of the others, and the actual values should match factory specs for that engine. A single low cylinder points to worn rings or valve problems that idle checks will never reveal. A leak-down test goes further. It pressurizes each cylinder and measures how much air escapes and where. Air hissing from the oil filler cap means ring wear; from the intake or exhaust means valve issues; bubbles in the radiator coolant mean a head gasket problem. This is the single most revealing test for engine condition. Also request OBD scan data with freeze-frame records, a coolant system pressure test (to catch hidden leaks), and an inspection of the timing belt or chain condition with service history. For electric vehicles, compression tests don't apply — instead ask for a battery health report from the BMS, motor insulation readings, and a road test logging any inverter or drive-unit fault codes. A written report with photos or video of each test is essential evidence for your records.

Fake or recycled inspection reports are a real risk. Verify authenticity before wiring the balance payment. First, match the VIN: the report must show the full VIN, and the photos must include close-ups of the VIN plate on the chassis and the windshield tag. Ask for a live video call where the inspector walks to the car, shows the VIN tag, and then pans across the dashboard, odometer, and any defects noted in the report—on the same call. Check metadata: ask for original photos rather than screenshots. Files sent via WeChat often strip EXIF, so request the inspector to email originals or use a cloud link where timestamps and GPS data are visible. Cross-verify details: the odometer reading in the video should match the report exactly, and paint-thickness readings should be reproducible—ask the inspector to re-measure 2-3 spots live. Use a known inspection company rather than one recommended solely by the seller, and pay the inspector directly. An independent inspector has no incentive to hide defects.

Absolutely. The extreme temperature fluctuations will significantly accelerate the aging of chassis rubber parts, oil seals, and interior plastics. For vehicles frequently dispatched across such latitudes, we will conduct fatigue resistance checks on chassis rubber parts that are twice as stringent as those for vehicles in temperate regions.