The Cadillac STS's gas tank is 17.0 gallons.
Larger sized gas tanks are advantageous because you don't need to go to the gas station as often. Also, you can take advantage of days when gas prices are discounted and fill up your vehicle with a larger quantity of gas.
Scroll down for the gas tank size tables for your year and trim.
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2011 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2011 | V6 Sedan 4D AWD | 3.6L | 17.0 | 64.3 |
| 2011 | V6 Sedan 4D Luxury | 3.6L | 17.0 | 64.3 |
| 2011 | V6 Sedan 4D Luxury AWD | 3.6L | 17.0 | 64.3 |
| 2011 | V6 Sedan 4D Premium | 3.6L | 17.0 | 64.3 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2010 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2010 | V6 Sedan 4D AWD | 3.6L | 17.0 | 64.3 |
| 2010 | V8 Sedan 4D | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2010 | V8 Sedan 4D AWD | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2009 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2009 | V6 Sedan 4D AWD | 3.6L | 17.0 | 64.3 |
| 2009 | V8 Sedan 4D | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2009 | V8 Sedan 4D AWD | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2009 | 8 Sedan 4D V Series | NORTHSTAR 4.4L | 17.0 | 64.3 |
| 2009 | 8 Sedan 4D V Series | NORTHSTAR 4.4L | 17.0 | 64.3 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2008 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2008 | V6 Sedan 4D AWD | 3.6L | 17.0 | 64.3 |
| 2008 | V8 Sedan 4D | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2008 | V8 Sedan 4D AWD | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2008 | 8 Sedan 4D V Series | NORTHSTAR SUPERCHARGED 4.4L | 17.0 | 64.3 |
| 2008 | 8 Sedan 4D V Series | NORTHSTAR SUPERCHARGED 4.4L | 17.0 | 64.3 |
| 2007 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2007 | V6 Sedan 4D AWD | 3.6L | 17.0 | 64.3 |
| 2007 | V8 Sedan 4D | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2007 | V8 Sedan 4D AWD | NORTHSTAR 4.6L | 17.0 | 64.3 |
| 2007 | 8 Sedan 4D V Series | NORTHSTAR SUPERCHARGED 4.4L | 17.0 | 64.3 |
| 2007 | 8 Sedan 4D V Series | NORTHSTAR SUPERCHARGED 4.4L | 17.0 | 64.3 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2006 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2006 | V6 Sedan 4D AWD | 3.6L | 17.0 | 64.3 |
| 2006 | V8 Sedan 4D | 4.6L | 17.0 | 64.3 |
| 2006 | V8 Sedan 4D AWD | 4.6L | 17.0 | 64.3 |
| 2006 | 8 Sedan 4D V Series | SUPERCHARGED 4.4L | 17.0 | 64.3 |
| 2006 | 8 Sedan 4D V Series | SUPERCHARGED 4.4L | 17.0 | 64.3 |
| 2005 | V6 Sedan 4D | 3.6L | 17.0 | 64.3 |
| 2005 | V8 Sedan 4D | 4.6L | 17.0 | 64.3 |
| 2005 | V8 Sedan 4D AWD | 4.6L | 17.0 | 64.3 |
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Also, you can consult the vehicle's owner's manual.
