Call or WhatsApp

0302 2111 406

Call or WhatsApp

0302 2111 406

Does Rain Cause Rust On Cars: 7 Ways To Protect Your Car From Rust

Does rain cause rust on cars? The answer is yes, and if you live in an area with heavy rainfall, you definitely need to know this.
Rust is every car owner’s deadliest nightmare. Unfortunately, it may happen to any automobile at any point in time. Cars aren’t made of Valyrian steel; if you’re not careful, your car’s evil adversary can destroy it beyond repair. Worse, if you do nothing, your prized asset will deteriorate into a useless metal waste over time. However, by being initiative-taking and taking the necessary precautions, you can safeguard your vehicle against car rust damage.
Hydrated Iron Oxide, or iron hydroxide, is the technical word for rust. It is an electrochemical process when the iron is regularly exposed to oxygen atoms and water and manifests as a brown, crispy coating.
Rust prevention is one of the most significant factors in external vehicle upkeep. Rust not only looks terrible, but it may also cause structural problems and lower the market value of your automobile. Keeping it off your car is one of the best methods to ensure its safety and worth.
Rust stains on an automobile, unbelievably, are more painful than heartbreaks. Unfortunately, we cannot mend your shattered heart, but we can assist you in removing those “evil brown stains” from your automobile. Continue reading to learn what causes car rust and how to avoid it.

Does Rain Rust Your Car?

Yes, rain causes rust. However, driving through rain does not always result in rust. If the car is exposed to rainwater for a prolonged period, there is a strong possibility that the iron parts may rust.

Unfortunately, most automobiles are made of metal, a combination of iron and carbon. Metal is an alloy that combines iron with carbon to make it stronger. Nonetheless, metal has one drawback. It will rust when exposed to dampness. Various parts of the car, including the doors, frames, and chassis, are metallic.
To describe this procedure, we’ll need to go over chemistry. Rust occurs when an iron-containing substance encounters moisture. When the two chemicals come into contact, an atomic reaction occurs, resulting in oxidation. Oxidation of metal produces a car to rust. Rain is the most obvious source of moisture coming in touch with the metal in your automobile. If the weather is severe, make sure your car is well-protected.

Other Reasons That Cause Rust on Cars

There are some most common causes of car rust. Let us discuss them further down.


During freezing weather, car owners apply road salt to melt ice and snow from their vehicles. It dissolves the ice. However, salt makes the metal more prone to rusting, and melting snow can make its way into the crannies of your car, where it will not dissipate immediately. The salt functions as an electrolyte, allowing the car’s iron components to lose electrons rapidly, resulting in rusting. Salt may accumulate on the under-body of your vehicle and cause corrosion over time.


If you neglect your car’s maintenance, car rust is more likely to form and intensify. Wash your automobile regularly and take it to a mechanic at the first indication of trouble. Regular automobile maintenance can help you keep on top of any corrosion issues.

How to Protect Car from Rusting?

Your car is made of metal, which includes iron, and is prone to rust. Over the years, the automobile industry has tried and evaluated several techniques to prevent or eliminate corrosion in your car, ranging from using alloy components to adding a very resistant coating to the steel. However, the rusting process is unavoidable despite current automobile exterior safeguards. You may, however, slow or avoid the process by examining your automobile regularly and taking precautions.

Park Your Car Indoor

This is an easy decision if you want to protect your car from all rust-related issues. Make sure you park in a garage or at least a covered location.
Rain causes rust, not simply because of moisture. One of the primary reasons that rain causes metals to rust is the presence of corrosive compounds and elements in acid rain. This occurs when, in addition to natural water sources, the sun evaporates additional toxic elements, which then fall back into the environment as corrosive rain.

Apply Wax on the Exterior of the Car

Apply a substantial quantity of wax to the exterior of your car after washing it. Waxing your vehicle will not only make it shine and look good, but it will also provide a thin coating of protection. This thin coating of wax acts as a barrier between the topcoat of your car and the acid rain that might cause corrosion.
You may also apply wax to the rusted areas to keep acid rain from enlarging the damage. However, it would be best if you addressed even the most minor rust spots on the exterior of your car since they will gradually get more prominent.

Buy a Car Cover

If you don’t have a garage or a space to lease for your car, you may use additional protective car exterior accessories, such as a waterproof rain cover. Car coverings from reputed manufacturers are made of rugged, waterproof, and breathable fabrics.
Waterproof coverings keep rain and water from penetrating the cloth and reaching the vehicle’s exterior. Because excellent car covers enable humid air to escape beneath the surface, your vehicle is less likely to rust.
If you want a waterproof vehicle cover, choose one with a secure fastening method. This will ensure that the car cover remains in position and protects your vehicle from the weather regardless of the heavy rain or wind.

Minimize Driving During Rain

Minimizing driving during rain is one of the greatest (and most obvious) strategies to safeguard your car against rust formation during the rainy season. This entails keeping your automobile under cover and not driving it in the rain.
Although it may be difficult not to do so, especially if you’ve developed a habit of driving regardless of the weather, you may need to devise a strategy to travel from point A to point B without getting your valuable vehicle wet.
If there are already rust stains, acid rain can accentuate them. That is why, if you are unable to wash your car with soap, you should at least rinse it with clean tap water.

Ensure to Have Good Mudguards

Car mudguards aren’t only there to look nice. In truth, their role goes beyond just shielding the car from mud splashes blasting off the road. Mudguards also protect your brakes and wheels from contact with water which isn’t essential.
Mudguards (also called mud flaps) divert water splashed by the wheels towards the wheels and brakes. Because your wheels and brakes have less contact with water, they are less likely to rust.

Never Park in a Humid Area

Parking in enclosed, damp places may exacerbate automotive corrosion. So, you always want to park in a well-ventilated residence.

Lubricate Various Component

Rainwater may corrode car parts, including hinges and levers. So, it would be best if you protected them throughout the rainy season. The most straightforward approach to protect them is to lubricate the components often.

Frequently Ask Questions

1: Does rain make rust worse?
Rain may be damaging to metal. However, acid rain is worse and can hasten the rusting process. Any metal exposed to acid rain will corrode and rust more quickly. If the pH level of rainwater is significantly below the typical range of 5.6, acid rain will accelerate rusting.
2: What makes the rusting process fast?
Here are factors causing rust in a vehicle.
When iron parts of a car encounter oxygen and rainfall, oxidation occurs, known as rust.
Highway salt can cling to car underparts, and a chemical response ensues, leading to rust.
Lack of maintenance:
If you do not properly maintain your vehicle, car rust is possible.
3: How long does it take rust to form on a car?
Steel is a metal that contains iron, and if it is exposed to environmental conditions such as water and oxygen, the steel may begin to rust in as little as 4-5 days.

Final Thoughts

Cars are liable to rust, especially when exposed to factors such as salt, air, and water. Knowing what causes rust under automobiles might help you prevent and eliminate rust. So, those are the seven effective ways to keep your automobile from rust. Car rust might be awful to look at and severely harm your automobile over time.
You may avoid rust from forming underneath your car by parking in a garage, applying the proper coating, and altering your driver’s behavior. You can remove rust on your automobile with sandpaper, brushes, and priming paints. In short, you must deal with it as soon as you see it. If your automobile has no rust, maintain it with frequent cleaning and ceramic coating treatments using car interior accessories.
It may appear to be a nuisance today, but it will save you time and money in the long term and maintain your automobile in excellent shape.