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Pontiac gas tank sizes & fuel capacity

20 models, tanks from 11.9–25.5 gallons. Pick one for every year and trim.

Older models

600015.7 gal1990–1991 Aztek18.0 gal2001–2005 Bonneville18.0–18.5 gal1990–2005 Firebird15.5–16.8 gal1990–2002 G312.0 gal2009 G513.0 gal2007–2009 G616.0–16.4 gal2005–2010 G819.0 gal2008–2009 Grand Am13.6–15.2 gal1990–2005 Grand Prix16.0–18.0 gal1990–2008 GTO18.0 gal2004–2006 LeMans13.2 gal1990–1993 Montana20.0–25.5 gal1999–2005 Montana SV625.0 gal2006 Solstice13.0 gal2006–2009 Sunbird13.6–15.2 gal1990–1994 Sunfire14.0–15.2 gal1995–2005 Torrent16.0–20.0 gal2006–2009 Trans Sport20.0–25.0 gal1990–1998 Vibe11.9–13.2 gal2003–2010

Tank sizes are in US gallons, across every year of that model.