Rust is a deal-breaker that photos can hide, so be systematic. High-risk areas to check: 1. Underbody and frame rails—surface rust is normal, but flaking or bubbling paint means advanced corrosion 2. Wheel arches and rocker panels—these trap mud and salt 3. Door bottoms and the trunk floor—water collects here; lift the trunk mat and look for dampness or repair welds 4. Around the windshield and sunroof drains—leaks cause hidden rust in the A-pillars Ask the inspector to do a magnet test: filler-repaired areas won't hold a magnet, indicating past accident repairs. A paint thickness gauge reveals resprayed sections—uniform readings around 80-150 microns are normal; spikes over 300 suggest bodywork. Cars from northern China (salted roads in winter) or coastal cities need extra scrutiny on the underbody. If structural members show corrosion, walk away—repairs rarely restore original strength.

4S dealership records are directly connected to the manufacturer's database, making the data hard to tamper with and the most reliable, with original parts guaranteed; third-party repair shops usually are not connected, making their data unverifiable. Therefore, we only consider the connected records from 4S dealerships as valid historical documentation.

Most Chinese brands provide owner manuals in Chinese only, but you can usually get an English version through three channels: ask the exporter (many keep PDF copies), download from the brand's overseas website, or use the car's built-in infotainment system which is often switchable to English. For parts, start with the VIN. Send it to the exporter and ask for the OEM part numbers you need — many parts are shared across models sold domestically and abroad. Common wear items (filters, brake pads, suspension components) are increasingly stocked by international parts platforms and can be shipped within days. For body panels and brand-specific electronics, ordering directly from China via the exporter is often the only option, so factor a 2–6 week wait into your planning. Practical tip: before buying, ask the exporter for a parts price list for the specific model. If they cannot supply one, that is a warning sign about after-sales support. Keep a small stock of common consumables in advance to avoid downtime.