I have a 2009 Civic that has no noticeable body rust, despite being in Michigan. Two times I've had to get minor body work done (not rust-related), the bodyshop owner commented that he never sees them this clean anymore. I chalk it up to being diligent with car washes, especially in the winter. Purists will cringe at this, but I'm fine with sacrificing some surface appearance (the paint doesn't look too bad, considering how many carwashes it's seen) in exchange for longevity.