Typically, repair costs from rodents chewing car wires range from a few hundred to several thousand dollars. However, your exact price will depend on the extent of the damage, as well as the type of wires that were chewed. For example, if a rat was only inside your car for a night, the damage might not be as extensive as if it had been living there for weeks. Keep in mind that even if you file a successful comprehensive car insurance claim, you’ll still need to pay your deductible (your portion of the total cost for repair that is taken out of your claim amount).