The 2013 Lexus GS-450H has a drag coefficient of 0.27 Cd.
The 2014 Lexus GS-450H has a drag coefficient of 0.27 Cd.
The 2014 Lexus GS-350 has a drag coefficient of 0.27 Cd.
The 2008 Lexus GS-350 has a drag coefficient of .27 Cd.
The 2009 Lexus GS-450H has a drag coefficient of .27 Cd.
The 2011 Lexus GS-350 has a drag coefficient of 0.27 Cd.
The 2011 Lexus GS-450H has a drag coefficient of 0.27 Cd.
The 2010 Lexus GS-350 has a drag coefficient of 0.27 Cd.
The 2010 Lexus GS-450H has a drag coefficient of 0.27 Cd.
The 2013 Lexus GS-350 has a drag coefficient of 0.27 Cd.
The 2009 Lexus GS-350 has a drag coefficient of .27 Cd.
It's in the trunk - back, left-hand corner. The cover tilts out from the top.