The gas tank on the 2013 Acura MDX holds 21.0 gal..
The gas tank on the 2013 Acura TL holds 18.5 gal..
The gas tank on the 2013 Acura RDX holds 16.0 gal..
The gas tank on the 2013 Acura TSX holds 18.5 gal..
The gas tank on the 2013 Acura ZDX holds 21.0 gal..
The gas tank on the 2013 Acura ILX holds 13.2 gal..
About 19 Gallons
21 gallons
17.2 gallons
19.1 US gallons
15
According to the owners manual 18 gallons