How long will it take for a flood-damaged car to develop problems?
2 Answers
The specific number of years a flood-damaged car can continue to operate depends on the extent of the damage and subsequent maintenance. If the damage is not severe and proper maintenance is performed, the car may run without issues for three to five years. However, the longer the vehicle has been submerged, the higher the likelihood of malfunctions, including problems with the engine and electrical systems. Important considerations: During the repair process, some fabric materials may not be replaced but merely dried. Sometimes, internal moisture cannot be completely removed, leading to a strong musty odor in the car during hot summer months, which can sometimes be harmful to health. Water can infiltrate wiring harnesses and the casings of some onboard computers. After repairs, all functions may appear normal, but residual moisture in the circuits can accelerate the oxidation and damage of wires or circuit boards. Some metal components in the car may not have undergone anti-corrosion treatment. After the vehicle is repaired, residual moisture can speed up the corrosion and oxidation of these metal parts.
Once a flood-damaged car is driven, problems can quickly arise. I once drove a used off-road vehicle that had been submerged. Within just a week of purchase, the dashboard started malfunctioning, the headlights flickered, and the engine frequently stalled for no reason. This was caused by water intrusion into the electrical system, leading to short circuits and electrical failures. A few months later, noticeable rust appeared on the chassis and suspension components, accompanied by strange noises when turning, indicating oxidation and corrosion of metal parts. Even worse, the engine might develop issues within one or two months, such as difficulty starting or reduced power. A mechanic told me that the depth and duration of submersion directly affect how quickly problems emerge—shallowly flooded cars might last a few months, while deeply submerged ones could fail within days. Overall, flood-damaged cars are not a long-term solution. If discovered, it's best to stop driving and get it inspected—safety first.