It will be accident damage!
It's unfortunate when people blame Alfa. The production environment is one of the best. But when you get to Accident repairers anything goes. The panels may have been badly stored. Frequently you find grazing to the metal and perforation of the protection before they've even attempted to put it on the vehicle. Then they spot weld at uncontrolled settings. The panels are rubbed down to get rid of the transit damage followed by a few coats of paint.
Then somebody starts a thread saying Alfas rust!
I'm not quite sure why you continue to say this? I don't think anyone takes any pleasure in the lack of underseal on Alfa Romeos - certainly I don't when, on inspection, the two rear floorpans on my 2005 156 had ABSOLUTELY NO UNDERSEAL WHATSOEVER
. They only had paint straight onto metal. AND THIS HAS ABSOLUTELY NOTHING TO DO WITH ACCIDENT DAMAGE
. This is a recognised and acknowledged problem with every Alfa specialist I have spoken to and used. I have seen other 156s on the ramp where whole floorpans are completey devoid of underseal, and some have had significant rust. It appears to be a lottery as to which floorpans miss the treatment.
By all means, continue to delude yourself. But I don't think you should be allowed to delude other members on here with your wildy inaccurate and ill-advised comments
Please people, inspect all areas on the underside of your Alfa Romeo, and if any areas are deficient in underseal, do remedy as appropriate. As Symon has pointed out, those models produced in the south (147/156/GT/159 etc) appear to be most prone. My 916 Spider, on the other hand, has very good underseal from new, but that was produced in the north