Because car built quality wasn't best. and still suffers few problems. if you really want to buy one don't get old built or used one..if you want read my old adds about problems you can get more idea why i am saying dont get old built one.
I've been on this forum before to say that my June 2015 500x city look 1.6 multijet 120hp lounge has behaved perfectly from new. It is now coming up to 12 months and eight thousand miles and is still behaving itself. I am not gloating but just to let prospective and new owners that it is a great car. Long may it continue.