Mice ate the wiring under my gate shifter plate over the course of last winter. They get into air filters as well. It was unusual for mice to be in my cars as the cars stay outside (gasp!). No garage - yet. Mice like garages and wood piles.
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (194,000)
1999 E300 Turbodiesel (244,000 miles, dies at 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles)
2011 Audi A4 Avant (129,000 miles) hate this car!
BMW 330 xi 6 speed manual (100,034 miles)