What are the methods to check if a car has been flooded?

[VonLiam]

Methods to check if a car has been flooded include: 1. Inspect the chassis components - some metal parts of a flooded car's chassis may rust, and the wheels may produce abnormal noises when turning; 2. Check the metal brackets inside the car - metal brackets under the dashboard and center console are prone to rust after being submerged in water; 3. Examine the carpets - normally, car carpets fit very snugly against the chassis; 4. Inspect the spare tire well drain plug - vehicle design accounts for water entering the spare tire well, so there is a drain plug at the lowest point of the well. After being removed and reinstalled, the drain plug will show noticeable signs of tampering.