Thanks Lou O for your comment. So far, Kia consumer affairs have been really responsive but now that they have the quote, it might take a bit more time to have an update!Prepare thyself for either no response or a negative response.
I don't believe chassis corrosion is part of the original rust thru warranty.
On your next vehicle take the garden hose in the spring time and flush out the under carriage with fresh water.
This will require you to get on your hands and knees to flush underneath the entire vehicle.
That should slow the salt monster down a tad.
Corrosion warranty is long gone. I am pleading reasonable service life expectancy which should more than 12 year for a car, even in the rust belt area. But to be honest, I have no expections. I am curious to what kia consumers affairs will do with a dissatified consumer that is now looking for a new car and their response will guide me in my decision of staying in the Kia family or not.
Since 2010 when I bought the car, every spring, I washed the Rondo undercarriage with the hose garden after I am done swapping my winter tire for my four seasons. On top of that, I go to the car wash with the undercarriage option every 2-3 weeks. Like Pretender said, this car would have needed a professional antirust treatment once a year. I like the suggestion from ricbrk who applies fluid film every fall and this is what I am going to do for my other and future cars. I really think Kia should have extended their rust proofing recall for the rear end to the front of the car.