The gas tank on the 2011 Porsche Panamera holds 26.4 gal..
The gas tank on the 2013 Porsche Panamera holds 26.4 gal..
The gas tank on the 2012 Porsche Panamera holds 26.4 gal..
The gas tank on the 2014 Porsche Panamera holds 21.1 gal..
The gas tank on the 2010 Porsche Panamera holds 21.1 gal..
The gas tank on the 2011 Porsche Cayman holds 16.9 gal..
The gas tank on the 2011 Porsche Cayenne holds 22.4 gal..
The gas tank on the 2011 Porsche 911 holds 16.9 gal..
The gas tank on the 2011 Porsche Boxster holds 16.9 gal..
15- Gallons US
The gas tank on the 2003 Porsche Boxster holds 16.9 gal..
The gas tank on the 2008 Porsche Cayman holds 16.9 gal..
The gas tank on the 2009 Porsche Cayman holds 16.9 gal..