Here in the rust belt everything dies a miserable death a few years after it leaves the showroom.
I've seen aluminum bumpers, driveshafts, suspension parts etc corrode completely through (to the point where they break or fall off). Brake lines rust through on a car that's only 3-4 years old.
I've even seen entire frames (unibodies included) rust through on cars and trucks that are only a few years old. Chevy cars are infamous for it in this area. It's nothing to crawl underneath a 1990 - 2012 Chevy Car, look up near the gas tank and find almost no subframe left under the car from the gas tank to the rear bumper.
