Picanto- Re Import or German vehicle???

Hello people. My friend wants to buy a Picanto. However, the reimports are much cheaper than the Germans. I was told by a dealer that the imports were not built for the German market and therefore rust very quickly. The sealing doesn’t have to be so great to withstand with our wet-cold weather. So the statement of the Kia dealer. Is that true or did he just want to sell a more expensive one? Is an import worth or do we get too many problems ? Ask for your help. MfG Utb