About 12 gallons in my 2003 ==According to Haynes,== 15.2 gallons. FriPilot
How many gallon of gas does a Pontiac sunfire gas tank hold
15
15.2 gallons or 57.5 litres
According to the Haynes manual, 15.2 gallons.
15.2
40 Liters
a 1992 Pontiac Bonneville can hold 18 US gallons of gas in its tank.
21 gallons
16 gallons
12.7 gallons
20.9 US Gallons.
18 gallons found at http://www.new-cars.com/2003/pontiac/pontiac-aztek-specs.html