hello - we live in the woods and rodents have been a real nuisance with chewing on wiring in vehicles. My neighbor across the street rat attack on their Lexus SUV resulted in $3K repair. Another neighbor had damaged to their Toyota pickup and their GM van. A few years back, one got into our garage and chewed out the wiring on a couple of the fuel injector wiring on our 2004 Prius, resulted in engine misfiring. These pests also chewed on the softer rubber hoses, like the windshield hoses and coolant overflow.
In total, we had rat wiring/hose chew through on our Prius, Corolla, Odyssey Van, iMiev over the years. I am constantly trapping them, but have been resisting using poison due to pets and local wild life (though i guess these rats are wild life as well).
I've noticed that it depends a little on luck, as some rats like the wiring and others don't. I've seen evidence of nesting in my Bolt; in fact there was a literal nest in my 2001 Prizm this week. Fortunately, there was no damage, at least none that I can see.
I am going to try a suggestion my next door neighbor mentioned about putting 2 Irish Spring soap bars in the engine compartment next. Apparently they don't like the smell.
good lucks