At what water level does flooding affect a car?
2 Answers
Flooding above the tire level can affect a car. Below are relevant details about water-damaged vehicles: 1. Overview: A water-damaged vehicle refers to a car that has been submerged, typically meaning the engine and transmission have been soaked, with water levels exceeding the wheels and seats, and prolonged contact between underbody components and water. Such vehicles pose significant safety risks. 2. Inspection methods: Open the hood to check for mud deposits on the radiator, air conditioning condenser, and front radiator panel (viewed from below). Examine small components near the engine, alternator, starter motor, wiring sockets, and the wheel well seams for mud traces.
Last time during a heavy rainstorm, I drove out and accidentally entered a waterlogged section. The water reached below the tire level, and I felt the chassis got wet, but there was no major issue. Later, the mechanic told me that if the water level rises above the wheels or near the exhaust pipe, water could backflow into the exhaust system, causing the engine to stall or even flood, leading to repair costs of several thousand dollars. If the water reaches the bottom of the car door, the carpets and wiring could get soaked, not only causing mold inside but also potentially short-circuiting and triggering generator failure. In more severe cases, if the water rises halfway up the windows, the battery and control panel would be damaged, essentially rendering the car scrap. I learned my lesson—always estimate the water depth before driving through. If the murky water exceeds the center of the tires, it's better to detour or stop. Safety is more important than anything else.
