I think theres more options if you're really trying to save money, it depends on what you're willing to sacrifice. For instance, if this is your first kid, you can push the front seat all the way forward and have one of the adults sit in the back with them. In two years (or whatever date you plan on doing), when the kid flips around, they'll fit in pretty much any car. If one of you is fairly small, with an optimally chosen car seat, even in a small car they can probably still fit in front. It might be a little less luxurious for a couple years, but thats the tradeoff. If you don't plan on taking alot of long road trips (which most people don't with young children), it'll probably be fine. We have two kids, and have a Prius V and a 2 door VW Golf, one still rear facing. Obviously we generally take the V when its a longer trip, but it is possible and we have taken the Golf with all 4 of us, and my wife just whines for a minute or two. It just depends on what you're willing to put up with.