Before the war in Ukraine and before inflation it was like 600-700 USD a month. Now I do not have it counted, but I feel like it is more up to 800-900 USD a month. Which is a little bit harder to sustain, but here we are, still managing it somehow :).
Even with the car? That must give a solid fight, it takes huge mileage after all. Or do you fix it yourself?
Until now (4 years of living in a car) I was able to fix everything myself or with a little help from my friends. We are trying not to drive too much. And we never buy anything else apart from basic food or diesel (ok... never is too strong :D).