The 2004 Toyota Avalon runs on regular unleaded.
The 2001 Toyota Avalon has a 4-speed automatic.
The 2002 Toyota Avalon has a 4-speed automatic.
The 2003 Toyota Avalon has a 4-speed automatic.
The 2014 Toyota Avalon has a 6-speed shiftable automatic.
The 2005 Toyota Avalon has a 5-speed shiftable automatic.
The 2012 Toyota Avalon has a 6-speed shiftable automatic.
The 2013 Toyota Avalon has a 6-speed shiftable automatic.
The 2011 Toyota Avalon has a 6-speed shiftable automatic.
The 2009 Toyota Avalon has a 6-speed shiftable automatic.
The 2008 Toyota Avalon has a 6-speed shiftable automatic.
The 2010 Toyota Avalon has a 6-speed shiftable automatic.