Full List of Cars with Soy-Based Wiring (2026 Update)

5 hours ago

Most cars made in the last decade likely use soy-based wire insulation, which is biodegradable and eco-friendly but has been linked to rodent damage in class-action lawsuits against automakers like Honda and Toyota.
Courts have dismissed lawsuits due to lack of evidence that soy wiring attracts rodents more than traditional wiring, and automakers deny liability, offering solutions like Honda's capsaicin-based rodent deterrent tape, though effectiveness varies.
Repairing chewed wiring can cost hundreds to thousands of dollars, and insurance may not cover it if neglect is suspected, especially for RVs and trailers, with rodents chewing wires to maintain teeth, not specifically for soy content.
Common rodents that damage wiring include mice, rats, squirrels, and chipmunks, and prevention methods include sealing entry points, keeping areas clean, and using physical barriers like the Box-Kat to protect vehicles.

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