Indeed. After paying your rent and (mandatory) health insurance there wouldn't be very much left.

Somebody in this thread also mentioned that it's a luxury to own any car in Switzerland - but that's just not true at all. In fact many apartment blocks have underground garages for cars.

It's just that with such an excellent public transport system (really it's unbelievably fantastic) you can pretty easily get by without a car. Especially in the bigger cities like Zürich.