Tesla Cybertruck Faces Surprising Corrosion Issues When Exposed to Magnets

Tesla Cybertruck: Rust Concerns and the Role of Magnets in Stainless Steel Corrosion

The Tesla Cybertruck, unveiled in 2019 by Tesla Inc. and helmed by Elon Musk, represents a bold departure from traditional automotive design. Its angular, futuristic appearance and exoskeleton made of 30X cold-rolled stainless steel are designed to maximise durability and resistance to dents. Promoted as a rugged, versatile electric pickup, it promises to combine innovation with utility. However, reports from early owners indicate a potential weakness: corrosion caused by prolonged exposure to magnets.

The Incident: Corrosion from Magnetic Signs

Cybertruck owner Nick from Seattle recently detailed his experience on the Cybertruck Owners Club forum. He used advertising magnets on his Cybertruck’s unpainted stainless steel exoskeleton for about a month. Upon removal, he discovered discolouration and corrosion on the lower portion of the passenger-side door. His detailed post included photographs revealing extensive staining, white blemishes, and brownish rust-like defects.

Nick attempted to address the damage using cleaning agents like Bar Keepers Friend and Windex, which removed some stains. However, deeper pitting and rough white spots persisted. Seeking advice from fellow owners, he considered using a cordless polisher for further cleaning but noted concerns about the long-term impact on the stainless steel surface.

Other Reports of Corrosion

Nick’s experience is not isolated. Another Cybertruck owner from San Diego, using the username “wh1t3rbb1t,” reported similar corrosion issues after using magnets on his vehicle. This highlights a potential vulnerability in Tesla’s decision to use a magnetic stainless steel alloy for the Cybertruck. While magnets open up opportunities for customisation, prolonged use appears to accelerate corrosion in some cases.

Why Does Corrosion Occur?

Stainless steel is known for its resistance to rust and corrosion, but specific factors can undermine this resilience:

1. Moisture and Debris: Magnets can trap moisture, road salt, and debris between their surface and the stainless steel, creating an environment conducive to corrosion.
2. Material Type: Tesla's Cybertruck uses magnetic stainless steel (likely ferritic or martensitic) for its exoskeleton. While durable, magnetic stainless steels are generally less corrosion-resistant than non-magnetic austenitic stainless steels.
3. Physical Damage: Strong magnets can scratch the surface, exposing the underlying metal to the elements and accelerating corrosion.

Preventative Measures

For Cybertruck owners wishing to use magnets, precautions can help reduce the risk of damage:

• Protective Layers: Placing a vinyl backing between the magnet and the vehicle’s surface can prevent direct contact and minimise trapped moisture.
• Frequent Cleaning: Removing magnets regularly and cleaning both the vehicle and the magnet can reduce the build-up of corrosive materials.
• Alternative Solutions: Using vinyl decals or wraps for advertising is a safer, more professional alternative. These can prevent contaminants from contacting the stainless steel while maintaining a clean aesthetic.

The Cybertruck: An Overview

The Tesla Cybertruck officially launched in November 2023, marking a significant milestone in the EV market. With a starting price of ￡49,990 and configurations reaching over ￡80,000, the Cybertruck combines performance with functionality. Tesla claims it can tow up to 14,000 pounds, accelerate from 0-60 mph in just 2.9 seconds, and offers a range exceeding 500 miles, depending on the model.

Since its debut, the Cybertruck has polarised public opinion. Its unconventional design and cutting-edge features have garnered immense attention, with Tesla reporting over one million pre-orders prior to its release. Despite its popularity, delays and concerns about real-world durability—like the recent rust reports—have raised questions about whether the Cybertruck can meet its lofty promises.

Balancing Innovation with Practicality

The Tesla Cybertruck was marketed as the ultimate solution for utility, adventure, and durability, capable of withstanding extreme environments. However, real-world reports suggest that owners need to take extra care to maintain the vehicle’s surface, especially if using magnets or exposing it to harsh conditions.

For those considering the Cybertruck, understanding its strengths and vulnerabilities is crucial. While its futuristic design and innovative features make it a standout in the EV market, proactive care and maintenance are essential to preserve its signature stainless steel exoskeleton.