Is it right if we say "I'm afraid we broke down the car in London" or I´m afraid we broke down just entering London??
Thanks a lot.
The car broke down.
You can say "We broke down" to mean "The car broke down."
Your thread title is "break into" which is something else entirely -- it means to illegal enter something, probably for the purpose of stealing something.
If you break something down, it means to turn it into small pieces. It's used figuratively as well. Let's break down this problem into simple steps.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.