Well, I've said this before, sorry, but my 2000MY Passat's mirrors still fold in easily. My daughter early 2002 6K
Ibiza, has had seized driver's side mirror since she bought it at less than two years old, so maybe its Seat quality issues that are the
problem. I've tried to get my daughter to get hold of a new mirror - even on ebay - but she was always too busy! That was until a month or so ago it got broken off while parked and she drove around for a week or so it seems with the mirror assembly rubbing against the car door - nice scratches! So that has cost her about £200 on parts and labour - could have been avoided if she reacted earlier (years earlier), the contact that broke it then would only have cracked the glass - and that also happened a few years before this incident, so she had been warned about it. I'm just quite amazed that the door had not been bent due to the mirror being jammed. I don't know why these pedestrian safety items are not checked at MOT time as they are not an option, the Europeon car regs have mandated them for about 25 years - they are not fitted for our convenience. So, in short, to anyone that has seized door mirrors, I'd try to replace them - freeing them up seems to be quite a job - if at all possible as the spring is quite strong!