I am not sticking up for any brand in particular, I am aware that Toyota has had big problems with their Tacoma frames being garbage. Asides from that model Toyota models resist rust like any full line manufacturer, when you see cars on the road with rust it always depends on how much winter driving, how often did they wash it, what type of rustproofing they have, how often do they apply it. That being said in my personal observations I see more Chrysler products with rust than any other manufacturer, and they seem to start to rust out earlier.