BMW, number 3?! They must build them different in the US, surely.
In the US it seems like they're built to barely make it to the end of the leasing period and then implode. They're really going to town with the "snap-in" fittings for hoses in the engine because putting a metal hose clamp on seems to increase COGS I guess.
It's a labor saving thing. It's cheaper to design a fancy snap-together plastic connector once, buy a few million from overseas and than it is to have expensive first world labor tighten hose clamps.