The gas tank on the 2010 Porsche Cayman holds 16.9 gal..
The gas tank on the 2008 Porsche Cayman holds 16.9 gal..
The gas tank on the 2011 Porsche Cayman holds 16.9 gal..
The gas tank on the 2009 Porsche Cayman holds 16.9 gal..
The gas tank on the 2007 Porsche Cayman holds 16.9 gal..
The gas tank on the 2014 Porsche Cayman holds 16.9 gal..
The gas tank on the 2012 Porsche Cayman holds 16.9 gal..
The gas tank on the 2010 Porsche 911 holds 16.9 gal..
The gas tank on the 2010 Porsche Boxster holds 16.9 gal..
The gas tank on the 2010 Porsche Cayenne holds 26.4 gal..
The gas tank on the 2010 Porsche Panamera holds 21.1 gal..
15- Gallons US
The gas tank on the 2003 Porsche Boxster holds 16.9 gal..