My Owners book says it has a 19 gallon tank
The gas tank on the 2011 Infiniti FX holds 23.8 gal..
The gas tank on the 2013 Infiniti FX holds 23.8 gal..
The gas tank on the 2012 Infiniti FX holds 23.8 gal..
The gas tank on the 2012 Infiniti EX holds 20.0 gal..
The gas tank on the 2011 Infiniti EX holds 20.0 gal..
The gas tank on the 2013 Infiniti EX holds 20.0 gal..
The gas tank on the 2012 Infiniti M holds 20.0 gal..
The gas tank on the 2013 Infiniti QX holds 26.0 gal..
The gas tank on the 2014 Infiniti QX60 holds 19.5 gal..
The gas tank on the 2014 Infiniti Q50 holds 20.0 gal..
The gas tank on the 2014 Infiniti QX50 holds 20.0 gal..
The gas tank on the 2014 Infiniti QX70 holds 23.8 gal..