Mercury Mariner FWD
23 MPG The 2011 Mercury Mariner FWD is EPA-rated at 23 MPG combined (21 city / 27 highway). Over 15,000 miles a year that is about 652 gallons, $2087 a year in fuel, or $0.139 per mile at $3.20/gal.
Across its full 2006–2011 run it averages 21.7 MPG, improving by 2.5 MPG over 6 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.109 | $1087 | $1630 | $2174 |
| $3.00/gal | $0.130 | $1304 | $1957 | $2609 |
| $3.20/gal | $0.139 | $1391 | $2087 | $2783 |
| $3.50/gal | $0.152 | $1522 | $2283 | $3043 |
| $4.00/gal | $0.174 | $1739 | $2609 | $3478 |
| $4.50/gal | $0.196 | $1957 | $2935 | $3913 |
| $5.00/gal | $0.217 | $2174 | $3261 | $4348 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2011 | 23 MPG | 21 | 27 | $2700 | 386 | 1 |
| 2010 | 23 MPG | 21 | 28 | $2700 | 386 | 1 |
| 2009 | 22 MPG | 19 | 27 | $2825 | 405 | 2 |
| 2008 | 21 MPG | 19 | 25 | $2975 | 424 | 2 |
| 2007 | 20.5 MPG | 19 | 23.5 | $3025 | 434 | 2 |
| 2006 | 20.5 MPG | 19 | 23 | $3025 | 434 | 2 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 70 sport utility vehicle - 2wd models tracked here, the Mercury Mariner FWD ranks 12 on current figures, against a class average of 20.7 MPG.
Closest more-efficient alternatives in the same class: Ford Escape FWD FFV (24), Hyundai Tucson 2WD (24), Jeep Compass 2WD (24.3), Jeep Patriot 2WD (24.3), Chevrolet HHR FWD (24.8).
Tailpipe CO₂ is rated at 386 grams per mile, which works out to roughly 5.8 tonnes a year at 15,000 miles.
Questions
What MPG does the Mercury Mariner FWD get?
The 2011 Mercury Mariner FWD is rated at 23 MPG combined by the EPA — 21 city and 27 highway. Across all 6 model years in the database it averages 21.7 MPG, ranging from 20 to 23 depending on year and trim.
How much does a Mercury Mariner FWD cost in fuel per year?
At 23 MPG and 15,000 miles a year, it burns about 652 gallons — roughly $2087 a year with fuel at $3.20 a gallon, or $0.139 per mile. The EPA's own published annual figure for the 2011 model is $2700.
Has the Mercury Mariner FWD become more efficient over time?
Yes. It has gone from 20.5 MPG in 2006 to 23 in 2011 — an improvement of 2.5 MPG, or 12% across 6 model years.
Is the Mercury Mariner FWD efficient for its class?
It ranks 12 of 70 in the Sport Utility Vehicle - 2WD class on current figures, against a class average of 20.7 MPG. That is 2.3 better than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.