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.

It's not mandatory. Four-wheel alignment and dynamic balance are part of routine maintenance. During long-distance towing and sea transport, the suspension may experience slight changes in stress. We recommend that buyers perform a four-wheel alignment locally after picking up the vehicle at the destination port and replacing tires suitable for local road conditions.

Water damage is one of the most common hidden problems in used cars, and it often escapes basic photo reviews. During a live video inspection, ask the inspector to check these specific points: 1. Smell test: A musty or moldy odor inside the cabin is the first red flag. Have them open all doors, run the AC briefly, and smell the air from the vents—musty AC often indicates water in the HVAC system. 2. Under the carpets: Lift the floor mats and look for water lines, rust stains, or dampness on the carpet backing and the metal floor underneath. Sediment or silt residue is a giveaway. 3. Seat rails and bolts: Pull the seats fully forward and backward. Rust on seat rails or fresh-looking bolts suggests the seats were removed for cleaning after flooding. 4. Trunk area: Check the spare tire well and under the trunk carpet for standing water marks or rust. 5. Electronics: Test every window, seat adjustment, and the infotainment screen—water-damaged electronics behave erratically. Also request a scan report: flood cars often store history codes for multiple control modules that failed simultaneously. Cross-check the car's origin; vehicles from flood-prone southern regions deserve extra scrutiny.