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Renata Liubertaitė

Many cars that have been submerged in water end up in the hands of buyers who have no idea about their past. While some signs of flood damage are obvious, others can be subtle or cleverly disguised by dishonest sellers, leading to long-term problems.

Fortunately, there are ways you can spot signs of flood damage, including thorough visual inspection and checking the car’s history on 

Reveal them all! Just enter a VIN code and click the button:

Used cars have dark secrets

How can you tell if a car has flood damage?

Knowing how to spot a flood-damaged car is crucial, whether you’re just browsing or about to buy. Many used car sellers try to hide these essential details, but there are some telltale signs that a car has been underwater.

 Faulty electrical systems are often the first sign of water damage. Make sure to test the entertainment system, power windows and mirrors, door locks, and lights to make sure they all work.

 Nearly all electrical systems are connected to the fuse box, typically found under the dashboard, in the boot, or in the engine compartment. The fuse box should be dry, and the fuse connections should be clean and free of corrosion.

 Car bodies are prone to rust from excessive moisture, especially if the car has been exposed to salt water. Carefully inspect the bodywork, paying extra attention to the undercarriage, door trims, badges, and plastic components. Even small bubbles in the paint can signal the presence of rust hidden beneath the paint.

 Ensure the interior is completely dry, especially footwells, seats, and other fabric areas. Soft materials tend to remain wet for a long time, so feel them, particularly in the lower areas of the car. Your hand should come away dry after touching these areas.

 Get inside the car, shut all doors, and take a moment to smell the interior. Damp seats and carpeting often leave behind an unpleasant, mouldy odour that’s difficult to mask, even with air fresheners.

 As floodwater recedes, crannies and crevices in a vehicle often trap dirt and debris that’s hard to reach, especially inside the car. Check for dirt between interior plastic parts and under the seats. Dirty (but not dusty) areas may be a sign that the vehicle has been flooded.

 It’s always a good idea to have an independent mechanic inspect the car. Not only can they spot potential mechanical issues, but they may also detect additional signs of flood damage.

Some severely flood-damaged cars can be sold for up to 50% less. Used car salesmen buy them for next to nothing, resell them for a relatively low price, and still make a hefty profit. Always remember that a suspiciously low price usually has a reason behind it.

Get a carVertical report to learn about possible exposure to floods and other damage

You can learn whether a vehicle could have been located in a flooded area by getting a carVertical vehicle history report. This can make you more aware of such a possibility and prompt you to inspect specific car areas. Moreover, our reports can highlight records from other 

Pay attention to the impact score, which indicates how severe the event was based on data from the Global Disaster Alert and Coordination System (GDACS).

You can also use information in other sections of the carVertical report to learn about water damage. For example, look at historical photos and check for fogged-up headlights, a suspiciously clean engine compartment, or water level signs inside the car.

Another option is to check for water-related title brands (e.g., Flood) in the “

” section (for cars that are in or imported from the US).

 that you can typically find stamped on the bottom of the windshield, driver’s side door pillar, front end of the frame, or vehicle’s documents.

Avoid costly problems by checking a vehicle's history. Get a report instantly!

Check your VIN

Water is a great conductor and a key component for the formation of rust, which spells trouble when it gets into the wrong parts of a car. When submerged, water can seep into every crevice, causing 

 Although electrical connectors and control units are typically sealed, they aren’t waterproof, allowing water to penetrate the most sensitive areas of the vehicle.

Drying out a flooded car takes days, and even then, there 

may be irreversible damage, such as oxidised wires, mouldy seats, or a sagging headliner.

 Water trapped in tight spaces can remain inaccessible for months, leading to 

electrical problems, recurring mould, and unpleasant odours.

Ideally, a flooded car should be completely dismantled, with all electrical wires disconnected and the interior taken apart, only to be put back together once everything fully dries out. Unfortunately, used car sellers often don’t invest that much time and effort, choosing to sell damaged cars instead.

Note that there’s always a huge risk to buy a flood-damaged car – even if it seems all the damage is fixed, there’s always the possibility that certain parts will deteriorate and break down over time.

Whether a flood-damaged car can be repaired – and whether it’s practical or cost-effective – depends on the severity of the damage and the specific systems affected.

What to inspect in a car to spot potential water damage

If the flooding was minor, such as water rising only to the floorboards, the damage may be limited to carpeting, upholstery, and some electrical components, which are not that complicated to clean or repair.

Water reaching the dashboard or higher is a bigger issue already. It can significantly affect electrical systems, engine components, and the transmission. These types of damage require more extensive repairs and could be very costly.

If the car was completely submerged, the water may have damaged critical systems such as the engine, transmission, and electronic control units (ECUs), which might require a complete overhaul or replacement. In addition to the fact that the cost of these repairs may sometimes exceed the vehicle's value, it’s also important to consider the vehicle’s long-term reliability when deciding whether to repair it.

In most cases, no. While you might take a risk on a flooded antique or rare car for restoration purposes, choosing a flooded car as your daily driver is likely a bad idea. Although the lower price may seem tempting, you could end up spending more than expected to ensure the car is safe and reliable.

However, if you come across a flooded car and still want to buy it, negotiate the price as much as possible to ensure you’re getting a decent deal.

Car maintenance guides

How to detect signs of flood damage in cars