Copied from
http://www.newscionxb.com/123-2nd-gen-scion-xb-talk/8874-afe-cai-2011-xb-fits-2012-a.html
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The engine/driveline, main body panels, door panels, and roof for 2008 thru 2012 xB are the same.
The front and rear end treatments for the 2008-2010 xb are the same ("dual slot" upper/lower front grills, red brake/turn lights, integrated rear reflectors, single reverse light).
The front and rear end treatments for the 2011-2012 xb are the same (dissimilar sized upper/lower front grills, red brake/amber turn lights, dual reverse lights, dual rear relectors mounted low in the bumper).
Other changes starting in 2011 (besides front and rear ends):
- revised front seat contours
- revised seat fabrics
- adjustable fore/aft center armrest
- tilt/telescopic steering column
- revised instruments and instrument trim (replaced Coolant Temp gauge with a clock and outside temp, added Coolant Temp idiot lights)
- base Pioneer head unit has preamp outputs (not sure if this was for 2011 or started earlier)
More than what you asked for. Hope it helps.
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Forgot to mention in the above, that the 2008-2010 have a single front lamp on each side for running and turns, while the 2011-2012 (and probably the 2013 also) have a separate white running light, and a separate amber turn light. These are both inboard of the headlight.
The 2013 has other trim changes, covered in another thread. I've not seen a 2013 on the road yet...