Does "My car was broken down last night" sound fine?
I am always grateful for your help.
I am not a teacher.
I'm afraid not.
My car broke down last night. = Mechanical failure.
My car was broken into last night. = Illegal entry.
Come to think of it, 'My car was broken down last night, but today it isn't because I had it repaired' could work in a very contrived way, but I wouldn't ever say that myself.