Do 4S shops sell flooded cars?
2 Answers
4S shops generally do not sell flooded cars. Here is relevant information: 1. Impact of engine flooding: When the water level during wading is higher than the engine air intake, water will directly enter the cylinders, forming a mixture of air and water. Air can be compressed, but water cannot. This means that when the crankshaft pushes the connecting rod to compress toward the piston, the water cannot be compressed, causing the connecting rod to deform and bend due to the resistance from the water. 2. Impact on interior: If the interior is soaked in water—when the water level rises above the car doors—water is likely to enter the cabin. Rainwater is not clean and contains many impurities. After the rain, the car interior becomes a highly humid greenhouse environment, which is an ideal breeding ground for mold. If the vehicle is not dried in time, mold spots can quickly ruin the fabric and leather materials inside the car.
I've been repairing cars for most of my life, and the most critical issue with flood-damaged cars is the electronic systems—once water gets in, they short circuit and are ruined, not to mention the rust and corrosion on the chassis. Reputable places like 4S shops value their reputation too much to dare sell such vehicles. The repair costs are high, and if customers find out and complain, the shop's reputation is ruined. I've seen cases of flood-damaged cars being refurbished and sold, but it's usually done by small used car dealers. 4S shops generally have strict inspection processes for incoming cars, checking insurance and claim records thoroughly. If you're looking to buy a used car, I recommend bringing a mechanic friend to check the chassis and engine bay, and to sniff for any musty odors. Don’t just be fooled by a shiny exterior—safety first.
