The Mercury Mountaineer's gas tank is 22.5 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 |
|---|---|---|---|---|
| 2010 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2010 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2010 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2010 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| 2009 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2009 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2009 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2009 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2008 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2008 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2008 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2008 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| 2007 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2007 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2007 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2007 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2006 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2006 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2006 | V6 SUV 4D Luxury 2WD | 4.0L | 22.5 | 85.2 |
| 2006 | V6 SUV 4D Luxury AWD | 4.0L | 22.5 | 85.2 |
| 2006 | V8 SUV 4D Premier 2WD | 4.6L | 22.5 | 85.2 |
| 2006 | V8 SUV 4D Premier AWD | 4.6L | 22.5 | 85.2 |
| 2005 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2005 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2005 | V6 SUV 4D Luxury 2WD | 4.0L | 22.5 | 85.2 |
| 2005 | V6 SUV 4D Luxury AWD | 4.0L | 22.5 | 85.2 |
| 2005 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2005 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2004 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2004 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2004 | V6 SUV 4D Luxury 2WD | 4.0L | 22.5 | 85.2 |
| 2004 | V6 SUV 4D Luxury AWD | 4.0L | 22.5 | 85.2 |
| 2004 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2004 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| 2003 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2003 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2003 | V6 SUV 4D Luxury 2WD | 4.0L | 22.5 | 85.2 |
| 2003 | V6 SUV 4D Luxury AWD | 4.0L | 22.5 | 85.2 |
| 2003 | V6 SUV 4D Premier 2WD | 4.0L | 22.5 | 85.2 |
| 2003 | V6 SUV 4D Premier AWD | 4.0L | 22.5 | 85.2 |
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2002 | V6 SUV 4D 2WD | 4.0L | 22.5 | 85.2 |
| 2002 | V6 SUV 4D AWD | 4.0L | 22.5 | 85.2 |
| 2002 | V6 SUV 4D Luxury 2WD | 4.0L | 22.5 | 85.2 |
| 2002 | V6 SUV 4D Luxury AWD | 4.0L | 22.5 | 85.2 |
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