I've test driven the newer G37 and somewhat agree what deepak has to say about the space in the back. For smaller build people, it's not that bad, but I can see it being cramped for more "normal" sized folks. I also found that the road noise is pretty bad for a luxury car, but you may be okay with it if you're used to a WRX. While driving on the highway sitting in the back it's hard to hear what people are saying in the front and vice versa.