Hmm my mondeo mrk 3 is a 2001 y reg and is starting to rust on the sills and arch lip but im suspecting its been damaged as there has been paintwork done before ............. i spose they would look at the car, notice this and tell me to fookoff
When I worked for Vauxhall any corrosion issues that came in had their paint thicknesses checked...only take a second with the right tool...to determin if it had previous paint repairs done.