All cars are vulnerable. My SUV has had more mice damage than my Roadster.
One Roadster had $10,000 in rodent damage. It's for sale online now. The entire wiring harness had to be replaced.
I have had coolant, brake and wiper fluid bottles all chewed. Not much wiring.
Best solution I have heard is to surround the entire car at night 360 with sticky traps. (not that sticky traps are perfect).