What Water Level is Most Dangerous for a Car?

[EmilianoAnn]

When a vehicle encounters water, the biggest concerns are damage to the engine and electrical systems. Water entering the engine's air intake can directly affect the engine, and the electrical systems inside the car are also highly susceptible to water damage. Otherwise, it can lead to water entering the cabin or the engine. If the vehicle stalls in water, remember not to restart the engine, as forcing a restart can cause the engine to ingest more water, leading to severe engine damage. Flood-damaged cars pose numerous hazards. Electronic Components: Cars contain a large number of electronic components. If submerged, the vehicle's future reliability can be compromised. Even after replacements, it's difficult to guarantee the car's reliability, and the likelihood of malfunctions increases over time. Odors: When the interior gets soaked, unpleasant odors are inevitable. Since post-flood treatment typically involves rinsing, drying, and sun exposure, some hidden areas can easily become breeding grounds for bacteria, leading to persistent bad smells.

[Ruby]

I've been driving for ten years, and my biggest worry is water reaching the exhaust pipe level. I remember during last year's typhoon season, my car was parked in a low-lying area, and when the water rose to the middle of the wheels, I was absolutely terrified. If the water level surpasses the exhaust pipe, it can backflow into the engine compartment, soaking and damaging the engine—repairs can cost at least several thousand yuan. In severe cases, the entire engine might be ruined and need replacement, not to mention other issues like electrical short circuits from water ingress. That's why during heavy rains, I always insist on parking my car on higher ground or slopes to avoid flooded areas. If the water reaches the bottom edge of the car door, never attempt to start the engine—just call for a tow truck. Protecting your car is essentially protecting your wallet.

[AveryFitz]

As someone who has worked in an auto factory, I can confidently say that the most critical water level a vehicle fears is when it reaches the air intake height. That location is generally under the hood, near the front of the vehicle. Once water surpasses this point, it directly enters the engine cylinders, causing piston seizure and internal component damage. Repairs for this are no small job, often costing tens of thousands. Under normal circumstances, water levels shouldn't exceed the wheel center point. In flood-prone areas, regularly check if the air filter is properly sealed, and during routine maintenance, inspect whether the body drainage holes are clear. If flooding occurs, immediately turn off the engine - not moving the vehicle is crucial to prevent further damage.

[CatherineRose]

Hey young folks, you should start panicking when the water level reaches the exhaust pipe! If that thing gets submerged, water can flow back into the engine and instantly destroy the whole machine. Generally, it's fine as long as the water doesn't exceed the line at the bottom of the car door. When driving through puddles, remember to go slow and maintain high RPM to let the exhaust pressure block the water. For daily parking, choose a slightly elevated spot to avoid puddles—simple and worry-free. If the water level rises above the seats, the electrical system will get soaked, making repairs even more troublesome. Safe driving is the priority—don't show off by charging through floodwaters.