Up here in Alberta there are certain winters where salt is used quite a bit. My 2016 F350 looks absolutely like new regardless of whether you look at the body, the interior or the underside of the truck. I sold my 5 year old King Ranch to a fellow from North Carolina and he was quite concerned about salt. After having me photograph the underside of the truck from multiple different angles he came up and bought it.....I think he was very impressed when he saw it. We have a 1992 Honda Accord that we have had in the family since new. It is starting to get a little rusty now but I think the only thing that has been replaced on this car are tries, brakes, battery and a muffler.