The 2001 Toyota Sienna has 40.7 in. of rear head room.
The 2005 Toyota Sienna has 42 in. of front head room.
The 2010 Toyota Sienna has 42.0 in. of front head room.
The 2006 Toyota Sienna has 42 in. of front head room.
The 2014 Toyota Sienna has 41.0 in. of front head room.
The 2008 Toyota Sienna has 42.0 in. of front head room.
The 2011 Toyota Sienna has 41.0 in. of front head room.
The 2004 Toyota Sienna has 42 in. of front head room.
The 2009 Toyota Sienna has 42.0 in. of front head room.
The 2012 Toyota Sienna has 41.0 in. of front head room.
The 2003 Toyota Sienna has 40.6 in. of front head room.
The 2007 Toyota Sienna has 42.0 in. of front head room.