While these avoidance methods may be a bit unique, this Mustang owner is not alone with the rat problem. In fact, a class-action lawsuit in California was filed against Toyota in 2016, claiming the automaker should cover under warranty any damage caused by rodents as they eat their way through the soy-based wiring insulation. Also in 2016, several AAA car care centers on the East Coast made similar rodent discoveries. Because they’re rats, there’s no preference for vehicle make and model. Depending on the amount of damage done, the repair costs can get pretty high. For example, the owner of a 2012 Toyota Tundra, whose wiring insulation was snacked on three times by rats, was stuck with a $1,500 bill.