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2008-2011 Mercury Mariner
Shown: 2008-2011 Mercury Mariner. Photo: IFCAR, Public domain, via Wikimedia Commons
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  • MY2005–2011

Mercury Mariner MPG & Fuel Cost by Year

7 model years · 2005–2011

23 MPG
Combined
21 MPG
City
27 MPG
Highway
Annual cost · MY2011 Mariner 2.5L 4-cyl FWD
$2,820

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

All Mercury models

Mercury Mariner fuel economy at a glance

EPA has rated the Mercury Mariner for 7 model years, 2005 to 2011. Across those years its combined rating runs 18–32 MPG. The latest model year, 2011, has 6 configurations rated 20–32 MPG combined and costing $2,050–$3,280 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2005 is the 2011 Hybrid 2.5L 4-cyl FWD, at 32 MPG.

Mercury Mariner MPG by year

1520253035 20052008200920102011 Gas Hybrid 1520253035 20052008200920102011 Gas Hybrid
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Mercury Mariner: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG)Hybrid (MPG) $/yr
2010-2011 Generation page
2011 20–2329–32 $2,050–$3,280
2010 20–2329–32 $2,040–$3,270
2009 Generation page
2009 20–2328–32 $2,040–$3,270
2008 Generation page
2008 19–2228–32 $2,040–$3,440
2005-2007 (1st gen) Generation page
2007 19–2127 $2,420–$3,440
2006 19–2127 $2,420–$3,440
2005 18–21— $3,110–$3,630

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Mercury Mariner generations

4 generations between 2005 and 2011. Open one for the table of every model year and configuration.

2008-2011 Mercury Mariner

2010-2011 Mercury Mariner

20–32 MPG · $2,040–$3,280/yr
2009 Mercury Mariner

2009 Mercury Mariner

20–32 MPG · $2,040–$3,270/yr
2008 Mercury Mariner Premier 4WD

2008 Mercury Mariner

19–32 MPG · $2,040–$3,440/yr
2006 Mercury Mariner Premier 4WD

2005-2007 Mercury Mariner (1st gen)

18–27 MPG · $2,420–$3,630/yr

2011 powertrain options

Gas · 2.5L, 3.0L
Combined
20–23 MPG
Per year
$2,820–$3,280
See gas configurations
Hybrid · 2.5L
Combined
29–32 MPG
Per year
$2,050–$2,290
See hybrid configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · regular gasoline $4.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Mercury Mariner's gas mileage by year?

EPA combined ratings for the Mercury Mariner run 18–32 MPG across model years 2005 to 2011. The latest year, 2011, is rated 20–32 MPG.

Which Mercury Mariner model year has the best gas mileage?

The 2011 Mercury Mariner Hybrid 2.5L 4-cyl FWD has the highest combined rating since 2005, at 32 MPG.

How much does a Mercury Mariner cost to fuel per year?

For MY2011, EPA-rated configurations cost $2,050–$3,280 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $2,050.

Has the Mercury Mariner's fuel economy improved over time?

Yes. The most efficient configuration moved from 21 MPG in 2005 to 32 MPG in 2011, 11 MPG more.

Is there a hybrid, plug-in or electric Mercury Mariner?

Yes. Hybrid versions are rated from 2006 to 2011 (27–32 MPG).

How many generations of the Mercury Mariner are there?

EPA data covers 4 generations of the Mercury Mariner: 2010-2011, 2009, 2008, 2005-2007. Each has its own page with a table for every model year.