Front tank (plastic) is approx 80 Litres(4.5L to the Gallon) of fuel. I have a 78 F250 4x4 and that what mine seems to take (to often).
The fuel tank holds 21 US Gallons.
In the gas tank......
The gas tank on the 2010 Jaguar XF holds 18.4 gal..
The gas tank on the 2010 Suzuki SX4 holds 13.2 gal..
The gas tank on the 2012 RAM 2500 holds 35.0 gal..
The gas tank on the 2014 Mazda MAZDA2 holds 11.3 gal..
The gas tank on the 2007 Lincoln MKZ holds 17.5 gal..
The gas tank on the 2008 Suzuki SX4 holds 13.2 gal..
I have a 2001 with a diesel and its a 38 gallon tank
In the fuel tank.
The gas tank on the 2011 RAM 2500 holds 35.0 gal..
The gas tank on the 2013 Buick LaCrosse holds 15.8 gal..