Mercury Mountaineer MPG by Year & Engine (EPA)

EPA fuel-economy ratings for every rated Mercury Mountaineer model year from 1997 to 2010 — each engine and transmission with its official city, highway and combined figures. Over these years the Mountaineer has been offered with 4.6L 8-cyl, 4.0L 6-cyl, 5.0L 8-cyl engines; the most efficient version is the 2010 (up to 17 MPG combined). All rated gas versions run on regular gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.

Mercury Mountaineer fuel economy by year

YearCombinedEnginesMedian used priceFor sale
2010 15–17 MPG 4.6L 8-cyl, 4.0L 6-cyl
2009 15–17 MPG 4.6L 8-cyl, 4.0L 6-cyl
2008 15–16 MPG 4.6L 8-cyl, 4.0L 6-cyl
2007 15–16 MPG 4.6L 8-cyl, 4.0L 6-cyl
2006 15–16 MPG 4.0L 6-cyl, 4.6L 8-cyl
2005 14–16 MPG 4.0L 6-cyl, 4.6L 8-cyl
2004 15–16 MPG 4.0L 6-cyl, 4.6L 8-cyl
2003 15–16 MPG 4.0L 6-cyl, 4.6L 8-cyl
2002 14–16 MPG 4.0L 6-cyl, 4.6L 8-cyl
2001 15–17 MPG 4.0L 6-cyl, 5.0L 8-cyl
2000 15–16 MPG 4.0L 6-cyl, 5.0L 8-cyl
1999 14–16 MPG 4.0L 6-cyl, 5.0L 8-cyl
1998 14–16 MPG 4.0L 6-cyl, 5.0L 8-cyl
1997 14 MPG 5.0L 8-cyl

2010 Mercury Mountaineer: engines & MPG

The 2010 Mountaineer was EPA-rated in 4 versions (4.6L 8-cyl, 4.0L 6-cyl), with combined economy from 15 to 17 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.6L 8-cyl Automatic 6-spd Regular 15 21 17 MPG
Mountaineer AWD 4.6L 8-cyl Automatic 6-spd Regular 14 19 16 MPG
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 20 16 MPG
Mountaineer AWD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG

2009 Mercury Mountaineer: engines & MPG

The 2009 Mountaineer was EPA-rated in 4 versions (4.6L 8-cyl, 4.0L 6-cyl), with combined economy from 15 to 17 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.6L 8-cyl Automatic 6-spd Regular 15 21 17 MPG
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 20 16 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 6-spd Regular 14 19 16 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG

2008 Mercury Mountaineer: engines & MPG

The 2008 Mountaineer was EPA-rated in 4 versions (4.6L 8-cyl, 4.0L 6-cyl), with combined economy from 15 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.6L 8-cyl Automatic 6-spd Regular 13 20 16 MPG
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 20 16 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 6-spd Regular 13 19 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG

2007 Mercury Mountaineer: engines & MPG

The 2007 Mountaineer was EPA-rated in 4 versions (4.6L 8-cyl, 4.0L 6-cyl), with combined economy from 15 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.6L 8-cyl Automatic 6-spd Regular 13 20 16 MPG
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 6-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 18 15 MPG

2006 Mercury Mountaineer: engines & MPG

The 2006 Mountaineer was EPA-rated in 4 versions (4.0L 6-cyl, 4.6L 8-cyl), with combined economy from 15 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 16 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 6-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG
Mountaineer 2WD 4.6L 8-cyl Automatic 6-spd Regular 13 19 15 MPG

2005 Mercury Mountaineer: engines & MPG

The 2005 Mountaineer was EPA-rated in 7 versions (4.0L 6-cyl, 4.6L 8-cyl), with combined economy from 14 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG
Mountaineer FFV 2WD 4.0L 6-cyl Automatic 5-spd Regular 13 19 15 MPG
Mountaineer 2WD 4.6L 8-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer FFV 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 17 14 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 5-spd Regular 13 17 14 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 17 14 MPG

2004 Mercury Mountaineer: engines & MPG

The 2004 Mountaineer was EPA-rated in 6 versions (4.0L 6-cyl, 4.6L 8-cyl), with combined economy from 15 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 2WD FFV 4.0L 6-cyl Automatic 5-spd Regular 14 20 16 MPG
Mountaineer 4WD FFV 4.0L 6-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 14 18 15 MPG
Mountaineer 2WD 4.6L 8-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 5-spd Regular 13 18 15 MPG

2003 Mercury Mountaineer: engines & MPG

The 2003 Mountaineer was EPA-rated in 4 versions (4.0L 6-cyl, 4.6L 8-cyl), with combined economy from 15 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 4WD FFV 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 2WD FFV 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 2WD 4.6L 8-cyl Automatic 5-spd Regular 13 18 15 MPG

2002 Mercury Mountaineer: engines & MPG

The 2002 Mountaineer was EPA-rated in 6 versions (4.0L 6-cyl, 4.6L 8-cyl), with combined economy from 14 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD FFV 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 2WD 4.6L 8-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 4WD FFV 4.0L 6-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.6L 8-cyl Automatic 5-spd Regular 12 17 14 MPG

2001 Mercury Mountaineer: engines & MPG

The 2001 Mountaineer was EPA-rated in 4 versions (4.0L 6-cyl, 5.0L 8-cyl), with combined economy from 15 to 17 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 15 20 17 MPG
Mountaineer 4WD 5.0L 8-cyl Automatic 4-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 13 18 15 MPG
Mountaineer 2WD 5.0L 8-cyl Automatic 4-spd Regular 13 18 15 MPG

2000 Mercury Mountaineer: engines & MPG

The 2000 Mountaineer was EPA-rated in 4 versions (4.0L 6-cyl, 5.0L 8-cyl), with combined economy from 15 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 4WD 5.0L 8-cyl Automatic 4-spd Regular 13 18 15 MPG
Mountaineer 2WD 5.0L 8-cyl Automatic 4-spd Regular 13 18 15 MPG

1999 Mercury Mountaineer: engines & MPG

The 1999 Mountaineer was EPA-rated in 4 versions (4.0L 6-cyl, 5.0L 8-cyl), with combined economy from 14 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 19 16 MPG
Mountaineer 2WD 5.0L 8-cyl Automatic 4-spd Regular 13 18 15 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 14 18 15 MPG
Mountaineer 4WD 5.0L 8-cyl Automatic 4-spd Regular 13 17 14 MPG

1998 Mercury Mountaineer: engines & MPG

The 1998 Mountaineer was EPA-rated in 4 versions (4.0L 6-cyl, 5.0L 8-cyl), with combined economy from 14 to 16 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 2WD 4.0L 6-cyl Automatic 5-spd Regular 14 18 16 MPG
Mountaineer 4WD 4.0L 6-cyl Automatic 5-spd Regular 14 18 15 MPG
Mountaineer 4WD 5.0L 8-cyl Automatic 4-spd Regular 12 17 14 MPG
Mountaineer 2WD 5.0L 8-cyl Automatic 4-spd Regular 12 17 14 MPG

1997 Mercury Mountaineer: engines & MPG

The 1997 Mountaineer was EPA-rated in 2 versions (5.0L 8-cyl), with combined economy of 14 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Mountaineer 4WD 5.0L 8-cyl Automatic 4-spd Regular 12 17 14 MPG
Mountaineer 2WD 5.0L 8-cyl Automatic 4-spd Regular 12 17 14 MPG

Frequently asked questions

What MPG does a Mercury Mountaineer get?

Depending on year and engine, EPA combined ratings for the Mountaineer range from 14 to 17 MPG. The most efficient rated version is the 2010 model year.

What engines does the 2010 Mercury Mountaineer have?

The 2010 Mountaineer was EPA-rated with 4.6L 8-cyl, 4.0L 6-cyl engines — see the 2010 table above for each version's exact city/highway figures.

Does the Mercury Mountaineer require premium gas?

No — rated versions run on regular gasoline.

About this data: EPA ratings from the official U.S. DOE/EPA dataset (fueleconomy.gov), as of August 2026; refreshed monthly. Market prices and listing counts are live medians from VehiSales inventory, updated daily. How to cite: “VehiSales Research, Mercury Mountaineer EPA Fuel Economy by Model Year” with a link to https://vehisales.com/research/fuel-economy/mercury/mountaineer.

See also: Mercury Mountaineer hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].

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