But I would not recommend doing that, because you have no idea if the road under the water is washed away, or if there’s a current that might sweep your car downstream. Plus, bad things like this can happen to your car:
Your engine uses a mixture of fuel and air to run the engine, and the air that is mixed with the fuel comes in through an air filter housing under the hood.
Well guess what’s going to go into your engine if the flood water gets up as high as the ait filter inlet? That’s right – water! Not only will you be stranded right where you are, there is a good chance that you will do some serious engine damage as well.
Fluids such as transmission fluid and gear oil can become contaminated if you get into water that’s too deep. Once water has gotten in and mixed with those fluids, they need to be replaced immediately to avoid some serious damage.
Another nasty flood problem comes when the flood water gets into the interior of your car, (and it doesn’t have to be that deep to get inside of the floorboard of your car). It might seem like you can just clean the carpets and everything will be OK, but that’s just the tip of the iceberg.
When water gets inside the car, the first thing that needs to happen is to drain the water out of the interior. First the seats are removed, and then the carpet is pulled back so you can see the floor. Most vehicles have plugs located in the floor in different places, so they can be removed to let the water drain out.
Flooded carpeting will take forever to dry out once it is wet, and no matter how much you clean them from the top, there still will be nasty floodwater left underneath. The best option is to take the carpet completely out. Sometimes the carpet can then be cleaned, but other times it needs to be replaced.
Also, there are electronics under the seats on many vehicles, and those will get ruined when they are submerged in water. They can be very costly to replace, plus the wiring going to the components will be soaked in nasty floodwater, which can cause them to corrode as well.
So obviously there are a lot of reasons not to drive into flooded areas, but you should also be aware that flooded cars might be on the used car market over the next year or so. If you are looking at a used car, make sure that you have it inspected for flood damage before you buy it.