Once you get in, there's plenty of room. I'm 6'1", 250 and fit fine. It's just the matter of getting in as the car sits low. In our case, no one will really sit back there as our kids are grown. I did try to get her to park once though, so we could try out the back seat and make out. She declined.I’m guessing that the Stinger in your signature is what she chose. We test drove a 2.5T and 3.3TT Stinger. My wife loved the hatch but the rear seat room and the fact that the tech is a generation behind, made the K5 her winner. I would have loved to have AWD for my wife, but I’ve been impressed with the FWD as long as you use the throttle judiciously coming out of corners.
As far as the tech goes, my wife was cool with what's there. We're not really techy, touchy screeny, type people. When we bought the car last summer, vehicles were very scarce. They had a couple of '22's, which have updated info, but they were only 2.0L's. We walked in knowing we would buy a 3.3TT GT2 and there were no '22's yet in that flavor.