I love mine. I average 43 mpg, and have hit 52-53 mpg before. It's a fun car to drive. Very nimble. However, in its stock ride height, it catches the cross winds on the freeway (tall ground clearance plus light weight). I lowered mine and don't feel it as much. You can search throughout
www.yarisworld.com/forums for all of my threads, and other peoples' experiences. My name is "Kaotic Lazagna" there on YarisWorld.
Oh, and I have a 2007 sedan S. Since then, more things have come standard on them. The 2010 comes with three additional features stock, TPMS, VSC, and one other feature that I can't remember off the top of my head.