I've never seen a completely working russian vehicle. They all have some problems. But the nice thing is it really doesn't matter. If one system fails, there is a way to go around it. And as everything is very simple, crude and un-computerized, you can fix it yourself. And if there's a leak... "nyet problema, nyormal".
"For little problems use hammer, for bigger ones use the sledgehammer." <- And it really works in most cases. I wouldn't try it on newer westerns as they might break!