AI DamageShort answer
A flooded car and a car that took on water after a crash are different cases. The second never sat in water but got soaked for weeks through broken glass or a sunroof. The lot page almost never flags it, so you have to find it in the photos.
Where the water comes from without a flood
- Broken windscreen, side or rear glass, or a sunroof. Between the crash and the sale the car stands outdoors for weeks.
- Doors, boot lid or windows that no longer close after the impact.
- Fire suppression or washing after the crash, with water poured inside.
- Snow that packs into the cabin in winter and melts in spring.
How often the lot page flags it
Out of 1 million sold US auction lots, water is listed as secondary damage on only 1,163 lots, or 0.12%. Their most common primary damage is a front-end impact (321 lots). For comparison, water is the primary damage on 18,598 lots, 1.9%.
These figures are a floor. Secondary damage is left empty on 60% of lots, so a wet interior usually simply does not appear on the page.
Signs in the photos
| Sign | What it may mean |
|---|---|
| Missing or broken glass, open sunroof | The cabin was rained on for as long as the car stood at the yard |
| Puddles on carpets, dark stains on seats | Water stood inside the cabin |
| Condensation in the instrument cluster and headlights | High humidity inside |
| White deposits or mould on plastics and belts | The soaking happened a while ago |
| Bags or film taped over the glass opening | Someone closed the opening, but not on day one |
Crash date and sale date show how many weeks the car stood with an open cabin. What photos can and cannot show is covered in what photos show.
How it differs from a flood
In a flood the water rises from below, and the key question is its level (see flooded car). With secondary water damage the water comes from above and the sides: seats, headliner, dashboard and everything under them suffer. The engine and lower components are usually dry.
That is why secondary water damage is easy to underestimate: the car starts and the suspension is dry, but weeks later electronic faults, smell and mould appear.
What to budget for
- Removing and drying the interior, mould treatment.
- Possible replacement of carpets, sound insulation and headliner.
- Diagnostics of cabin electronics after drying, not before.
- A reserve for delayed failures: connector corrosion does not show up at once.
How to read the damage fields on a lot page: Copart and IAAI damage codes.
Sources
- VinWind editorial analysis: 1,000,000 US auction lots with a sale result, 24 Jul – 30 Sep 2025. Secondary damage field: water (1,163 lots), empty (60.5%).