Full List of Cars with Soy-Based Wiring

[Richard Cranium]

We’re saving Mother Earth by using soy based products to entice rodents.
What could possibly go wrong?


Updated January 8, 2026)

In the last fifteen years, vehicle manufacturers around the world have adopted more eco-friendly practices — including the use of soy-based wire insulation. Compared to traditional petroleum-based coatings, soy wiring is biodegradable, renewable, and better for the environment.

But has this shift come with an unexpected — and expensive — downside?

Several class-action lawsuits against major auto manufacturers have alleged that soy-based wiring attracts rodents, leading to chewed electrical systems and thousands of dollars in vehicle repairs.

And while, as of 2026, no major automaker has been held legally liable in a way that settles the debate, chewed wiring remains a worrisome problem for thousands of vehicle owners.

Let’s take a closer look (or jump to rodent-proofing solutions):

Complete List of Vehicles That Use Soy-Based Wiring​

If your vehicle was made in the last decade, it very likely includes soy-based wire insulation. Most automakers have made the switch, but the exact implementation varies by brand and model year.

Below is a list of popular vehicles that are known or reported to use soy-based wiring:

Toyota

• Camry
• Corolla
• RAV4
• Highlander
• Tacoma
• 4Runner
• Prius

Honda

• Accord
• Civic
• CR-V
• Odyssey

Hyundai

• Elantra
• Santa Fe
• Sonata

Kia

• Soul
• Sorento
• Sportage
• Optima

Ford

• F-150
• Fusion
• Explorer

Nissan

• Rogue
• Altima
• Sentra
• Pathfinder
• Kicks

Stellantis Brands

• Dodge (e.g., Charger, Durango)
• Jeep (e.g., Cherokee, Wrangler)
• Chrysler (e.g., Pacifica, 300)
• Ram (e.g., Ram 1500)

General Motors

• Chevrolet (e.g., Silverado, Malibu)
• GMC (e.g., Sierra, Terrain)
• Buick (e.g., Encore, Enclave)

European Brands

• Audi
• BMW
• Mercedes-Benz
• Porsche
• Volkswagen

Electric Vehicles

• Tesla
• Rivian
• Polestar

More...........

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

Discover the full list of cars with soy-based wiring, why it matters, and how to protect your vehicle from rodent damage and costly repairs.

www.box-kat.com

 

[davek]

I wonder is this the full list? My Kia is a Cadenza and is not on the list and neither is the K900. Were they built somewhere else? I would find that hard to believe. So thats why so many new cars have electrical problems. Was this done on propose? All about the money.

 

[Kern Dog]

Oh yeah....
My classics will get rodent droppings under the hood but none of the wiring is chewed. The Honda of ours does, my truck somehow has not. Mary's Challenger has had the plastic underhood components chewed...no damage to the wiring though.
Try THIS stuff:

It smells sweet since it is peppermint based.
I've had to solder in a few sections of wiring to the fuel injectors and transmission shift solenoid because of rodents.
No matter how nice of an area that you live in, rodents can get in anywhere.

 

[eldubb440]

approx what year did this begin?

 

[33 IMP]

bioDEGRADEable wiring insulation?!?
Who the f#@k wants their insulation to degrade, let alone ATTRACT rodents??
What f#@king DEI MORON thought up this brilliant idea?

ANOTHER great reason to drive old cars.

 

[WileE]

approx what year did this begin?

This has been for quite a few years. A rodent chewing engine wires in Camry's and Honda's has been quite common.

 

[Dipstick]

We’re saving Mother Earth by using soy based products to entice rodents.
What could possibly go wrong?


Updated January 8, 2026)

In the last fifteen years, vehicle manufacturers around the world have adopted more eco-friendly practices — including the use of soy-based wire insulation. Compared to traditional petroleum-based coatings, soy wiring is biodegradable, renewable, and better for the environment.

But has this shift come with an unexpected — and expensive — downside?

Several class-action lawsuits against major auto manufacturers have alleged that soy-based wiring attracts rodents, leading to chewed electrical systems and thousands of dollars in vehicle repairs.

And while, as of 2026, no major automaker has been held legally liable in a way that settles the debate, chewed wiring remains a worrisome problem for thousands of vehicle owners.

Let’s take a closer look (or jump to rodent-proofing solutions):

Complete List of Vehicles That Use Soy-Based Wiring​

If your vehicle was made in the last decade, it very likely includes soy-based wire insulation. Most automakers have made the switch, but the exact implementation varies by brand and model year.

Below is a list of popular vehicles that are known or reported to use soy-based wiring:

Toyota

• Camry
• Corolla
• RAV4
• Highlander
• Tacoma
• 4Runner
• Prius

Honda

• Accord
• Civic
• CR-V
• Odyssey

Hyundai

• Elantra
• Santa Fe
• Sonata

Kia

• Soul
• Sorento
• Sportage
• Optima

Ford

• F-150
• Fusion
• Explorer

Nissan

• Rogue
• Altima
• Sentra
• Pathfinder
• Kicks

Stellantis Brands

• Dodge (e.g., Charger, Durango)
• Jeep (e.g., Cherokee, Wrangler)
• Chrysler (e.g., Pacifica, 300)
• Ram (e.g., Ram 1500)

General Motors

• Chevrolet (e.g., Silverado, Malibu)
• GMC (e.g., Sierra, Terrain)
• Buick (e.g., Encore, Enclave)

European Brands

• Audi
• BMW
• Mercedes-Benz
• Porsche
• Volkswagen

Electric Vehicles

• Tesla
• Rivian
• Polestar

More...........

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

Discover the full list of cars with soy-based wiring, why it matters, and how to protect your vehicle from rodent damage and costly repairs.

www.box-kat.com

That list would be more useful if it had the model year of the vehicles, many of those on the list span 20+ year.

 

[RR Fan Dan]

I wonder is this the full list? My Kia is a Cadenza and is not on the list and neither is the K900. Were they built somewhere else? I would find that hard to believe. So thats why so many new cars have electrical problems. Was this done on propose? All about the money.

I would assume they would be the same. Looking at the list I would think 99% of manufacturers are doing this. And it’s has nothing to do with eco-friendly, that’s just a marketing ploy. I’m sure it has to do with cost. It would probably be easier to generate a list of cars that don’t have it.

 

[Jim 68cuda]

My 2014 Challenger has had the wiring for the O2 sensors chewed twice. My 98 Durrango is currently down beacuse groundhogs chewed through an inch thick wiring harness leading to the back of the car that included the wiring for the anti lock brakes. My 96 Ram pickup had the wiring for a sensor under the battery chewed. I had a 67 Plymouth wagon with newish replacment plug wires. Most of the plug wires were chewed through. One plug wire was left with only a few inches coming out of the spark plug boot and a few inches coming from the distributor cap. Funny thing is, I used one of those chewed plug wires in a live trap as the only bait, and caught a groundhog within two hours.

A buddy left his Camry in my driveway for a few days one time and found serious damage to the engine harness on his return. The groundhogs are the usual suspects. I once went to start my Challenger but one was behind the serpentine belt and knocked the belt off. When cut the ignition and opened the hood, he didn't seem to be harmed, but the belt had removed a large volume of his fur. Meanwhile his buddy was in the engine bay too, up by the firewall behind the air cleaner. i think I caught them that time before they started their meal.

 

[Budnicks]

That won't or can't end well, at all...

You better invest in 'Mouse Blockers' if you own any of them
that used that crap or have any real mouse problem

I hear good cats/are great hunters, & are great for the problem too

I also use the dryer sheets, works too
Bounce brand, is what I've been using for a long time
a couple under the seats, 1 in the trunk, seems like it works
maybe 1 or 2 in the engine bay, if need be (albeit I never have)

I had a small problem for a couple weeks
someone was putting in a pool
& we all of a sudden had a mouse problem...

I got some of them green DECON bait cubes & lil' containers to put them in
put a brick/rock etc. on top of it (the lil plastic trap container)
so it doesn't get carried off
they eat it, then drink water & die, they bloat to death
(supposedly (?) it won't kill the cat that eats them too)

we also have several cats from surrounding neighbors
that catch mice constantly, great hunters, my lil' buddies

 

[toolmanmike]

I believe most combines have soy based wire insulation. Sure, they spend 11 months a year setting in a shed or corn crib. What could possibly go wrong.