If you’ve been following the hype around Tesla’s Cybertruck, you might have heard about an unexpected issue – rust. Despite its ultra-hard stainless steel exterior, some early Cybertruck owners have reported rust problems shortly after receiving their vehicles. So, why is this happening, and should we be worried? Let’s dive in.

What Makes Stainless Steel “Stainless”?

Stainless steel gets its name from its rust-resistant properties. This durability comes from a special ingredient called chromium. When at least 10.5% of steel’s composition includes chromium, a protective layer of chromium oxide forms on its surface. This layer shields the metal from oxygen and prevents rust. Even if the surface gets scratched, the chromium oxide layer can repair itself.

But here’s the thing: stainless steel isn’t completely impervious to rust. Factors like salt, humidity, and road contaminants can still damage the surface over time, even in high-grade stainless steel like the one used in the Cybertruck.

Early Rust Reports: A Case of ‘Rust Dust’?

Some early Cybertruck owners have noticed orange stains or rust marks after just a short exposure to rain. One California-based owner saw small rust flecks after driving in the rain for only two days, while another found similar corrosion after leaving their truck outside in Los Angeles for 11 days. These reports have sparked discussions among owners, with some suggesting that “rust dust” from external sources like rail dust or road debris may be the cause of this discoloration.

Tesla enthusiasts argue that these surface rust issues are minor and can be easily cleaned off with products like Barkeeper’s Friend and glass cleaners. This phenomenon isn’t unique to the Cybertruck and is commonly seen in urban environments. But does this mean there’s nothing to worry about?

Can Stainless Steel Actually Rust?

Surprisingly, the answer is yes. While stainless steel is highly resistant to rust, it’s not entirely immune. Exposure to chloride ions, commonly found in salt and certain cleaning products, can break down the protective chromium oxide layer and lead to pitting corrosion. This is a particular concern for vehicles exposed to road salt in winter or salty air in coastal areas. Over time, chloride ions can eat through the chromium layer, exposing the steel underneath and causing rust spots.

However, according to material science expert Gordian Hense, it would take prolonged exposure to extremely harsh conditions for significant rust to form on Tesla’s stainless steel. Nevertheless, minor surface rust could occur under the right circumstances.

Tesla’s Lack of Clear Coat: A Vulnerability?

One factor that may contribute to the Cybertruck’s rust issues is Tesla’s decision not to use a clear coat. Most modern vehicles come with a protective layer of transparent paint that shields the metal from the elements. Instead, Tesla offers a $5,000 urethane-based film as an optional protective measure.

Without this layer, the bare stainless steel is exposed to rain, road salt, and pollution, making it more susceptible to discoloration and rust. The fact that some owners have noticed rust within days of owning the truck suggests that this might be a critical oversight.

Is Tesla’s Stainless Steel Choice to Blame?

Unlike traditional car manufacturers, Tesla decided to use stainless steel for the Cybertruck’s body panels, similar to the iconic DeLorean of the 1980s. While stainless steel offers impressive durability and corrosion resistance, it is also heavy, difficult to work with, and expensive. Historically, automakers shy away from stainless steel for these reasons, and it’s possible that Tesla’s decision to use the material without additional protective measures is causing these rust issues.

Although Tesla uses a more resistant grade of stainless steel, it’s not invincible, as pointed out by experts like Hense. The wrong additives or improper cleaning routines could easily lead to issues.

Tesla’s Recommendations to Prevent Rust

Tesla provides recommendations for maintaining the Cybertruck and acknowledges the susceptibility of the stainless steel panels to corrosion. The Cybertruck manual advises owners to promptly clean off corrosive substances like bird droppings, tree resin, and road salt. Washing the vehicle in direct sunlight or using hot water is discouraged, as they could damage the finish. Tesla also suggests using alcohol-based solvents to remove tough stains, followed by a rinse with mild soap and water.

While these care instructions are standard for stainless steel appliances, they may come as a surprise for car owners, especially when purchasing a $60,000+ vehicle known for its durability.

So, Are Tesla Cybertrucks Really Rusting?

In conclusion, the Cybertruck’s stainless steel body is highly resistant to rust, but it’s not immune to surface discoloration, especially in harsh environments. Some of the reported rust may be due to external contaminants like “rust dust,” but there are valid concerns about the long-term durability of the uncoated stainless steel panels.

Tesla owners in coastal areas or places with heavy road salt may want to invest in additional protective measures, such as Tesla’s $5,000 wrap, to prevent early signs of rust. Whether Tesla will address these concerns with future updates remains to be seen. For now, Cybertruck owners may need to take extra caution in maintaining their “stainless” vehicles.

As one forum user put it, the best advice might just be: “Don’t drive it in the rain, or get it wet.”

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