I find it 'breaks' a lot game code wise, as in it's not showing as broken, but it no longer responds to any interractions.
I'm very often having to go into build mode and place out a new one, delete the old one, and use a cheat to keep my sim's money the same - because a washer or dryer has just stopped working.
If it breaks as a part of the game, I have my sim's repair it - and this does happen an absurdly frequent amount of the time...
Enough so that if I could figure out making mods I'd make a pricey one with higher reliability.