For goodness sake, if a car is reliable it doesn't break down, if a car is unreliable it does break down. What other context could it possibly be taken in.
To aviod further confusion when I say "car" I mean the chassis and everything attached to it and enclosed in other parts attached to the chassis.
Fair enough. Care to remind me on what basis you claim that a Japanese car is more reliable than a BMW? Surely not the TopGear survey?