I haven't had the exhaust smell while driving, but I have noticed that the back window collects a LARGE amount of dirt on it. I drive the same rig as you: 2011 Blizzard Pearl with beige leather and third row seating. I will ask a friend of mine that is a general mgr. at Price Leblanc Toyota in...
39 y.o.
Covington, LA
B.S. Biology
2011 Blizzard Pearl SR5 w/ leather and 3rd row seating
Chrome Bull Bar, Chrome PIAA driving lights, TRD CAI, WeatherTech liners, Advent DVD player with built in Playstation 2