The 2011 Ford Flex has a 3.5 L base engine size.
The 2013 Ford Flex has a V6 engine.
The 2010 Ford Flex has a V6 engine.
The 2009 Ford Flex has a V6 engine.
The 2012 Ford Flex has a V6 engine.
The 2014 Ford Flex has a V6 engine.
The 2009 Ford Flex has a 3.5 L base engine size.
The 2012 Ford Flex has a 3.5 L base engine size.
The 2014 Ford Flex has a 3.5 L base engine size.
The 2010 Ford Flex has a 3.5 L base engine size.
The 2013 Ford Flex has a 3.5 L base engine size.
The ( 2011 ) Ford Flex is ( 70.4 liters / 18.6 U.S. gallons )