The gas tank on the 2009 Ford Mustang holds 16.0 gal..
16.0 Gallons
15.4 US Gallons
15.7 gallons
16 gallons
16 gallons ( according to the 2012 Ford Mustang Owner Guide )
According to the 2006 Ford Mustang Owner Guide : ( 16.0 U.S. gallons )
15.4 U.S. gallons
16.0 Gallons
16.0 U.S. gallons
16 gallons
20 gallons