BMW's don't like the cold either, spent 10 mins trying to open fuel filler cap this morning. Frozen solid.
Nearly had to go back for my car.....
That's pretty woeful, its not even particularly cold - in the grand scheme of things
Why
It was raining all evening yesterday, then it snowed and then temperature dropped below freezing...
Any moisture inside the unsealed flap would freely condense onto any surface and promptly freeze.
And I thought you were bright...
No different to doors freezing onto saturated/wet frame seals, which incidentally are air tightish not water tight... And given that they're designed to be opened with a sub 10lb pull, no wonder that people break everything trying to rip the doors open with one foot on the adjacent panel
Never had any opening, be it boot, bonnet, door or fuel filler frozen so much I couldn't open it. I've had it where you can feel the door on the seal as you open, but not "stuck"
And we having seen cold temps for a few years TBH, so its a bit poor if people are finding things frozen shut, IMHO.
In proper cold (sub -15C before windchill) I've had the door key slots have a layer of ice over, which needs digging out with the key blade... ...but can't remember the last car I had that needed a key to open.