The A and B pillars are far more of an issue than C and D in my opinion. I can't remember the last time I needed to look out the rear quarter windows on the Xterra - in fact, I'm not sure I could even physically see out that part of the car if I wanted to. The Xterra has very good visibility thanks to the dated design and low belt line. As long as I can see out the passenger rear door window to check my blind spot, it should be fine. Plus, don't most Volvos come with blind spot detectors these days?