THERE IS ONLY ONE KIND OF SCION XB. BUT THERE ARE THREE KINDS OF SCIONS THE XA(COMPACT 4DR HATCH), XB (SAME CHASSIS AND POWERTRAIN BUT HAS A BOX FOR A BODY), AND THE TC (A 2DR SOMWHAT OF A SPORTS LOOK CAR).
The only two styles of xB available from the factory are manual and automatic. All power windows, A/C, etc are all the same on both. There are optional dealer extras you can add but those aren't part of the original car.
There have been two generations of xB, the 2004-2006 model was based off the Toyota Echo chassis. It was orignally sold as the Toyota bB sold in Japan, and was only slightly changed for the US market. The new 2008+ generation is based off the Toyota Corrolla Chassis and is much larger, heavier with a larger engine.
Scion xB was created in 2003.
The 2010 Scion xB has 16 valves.
The 2004 Scion xB has 16 valves.
The 2014 Scion xB has 16 valves.
The 2006 Scion xB has 16 valves.
The 2011 Scion xB has 16 valves.
The 2012 Scion xB has 16 valves.
The 2008 Scion xB has 16 valves.
The 2005 Scion xB has 16 valves.
The 2013 Scion xB has 16 valves.
The 2009 Scion xB has 16 valves.
The 2009 Scion xB has a 5-speed manual.