My rust started becoming noticeable about year 6 of ownership and is REALLY bad now at year 10. I don't want to start dumping money in the bodyshop for cosmetics & would rather put it into the vehicle for repairs but I don't know how much longer my 2009 Challenger can hang in there. I'm still driving it with over 172,000K miles. I wonder how bad the rust is going to continue if untreated. It's not embarrasing yet but I know it's there. It's not until I point it out to someone and then they say OH MY I didn't see that until you pointed to it. Then I'm like I KNOW Right? Shame on you Dodge - SHAME ON YOU! Design flaw or poor craftsmanship or whatever the reason, this is UNACCEPTABLE! TOYOTAS doesn't DO THIS? I had my Camry for 15 years & had NO RUST AT ALL even with all those snowy NJ winters!