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2017 Ford Flex Limited
Shown: 2017 Ford Flex Limited. Photo: Cutlass, CC0, via Wikimedia Commons
  • Gas
  • Standard SUVs
  • MY2009–2019

Ford Flex MPG & Fuel Cost by Year

11 model years · 2009–2019

19 MPG
Combined
16 MPG
City
23 MPG
Highway
Annual cost · MY2019 Flex 3.5L 6-cyl FWD
$3,440

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

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Ford Flex fuel economy at a glance

EPA has rated the Ford Flex for 11 model years, 2009 to 2019. Across those years its combined rating runs 17–20 MPG. The latest model year, 2019, has 3 configurations rated 17–19 MPG combined and costing $3,440–$3,840 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2009 is the 2015 Flex 3.5L 6-cyl FWD, at 20 MPG.

Ford Flex MPG by year

161820 20092019 Gas 161820 20092019 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Ford Flex: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2009-2019 (2009) Generation page
2019 17–19 $3,440–$3,840
2018 17–19 $3,440–$3,840
2017 17–19 $3,440–$3,840
2016 17–19 $3,440–$3,840
2015 18–20 $3,220–$3,540
2014 18–20 $3,220–$3,560
2013 18–20 $3,220–$3,540
2012 18–19 $3,360–$3,630
2011 18–19 $3,400–$3,630
2010 18–20 $3,270–$3,630
2009 18–19 $3,440–$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.

Ford Flex generations

1 generations between 2009 and 2019. Open one for the table of every model year and configuration.

2019 powertrain options

Gas · 3.5L
Combined
17–19 MPG
Per year
$3,440–$3,840
See gas 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 Ford Flex's gas mileage by year?

EPA combined ratings for the Ford Flex run 17–20 MPG across model years 2009 to 2019. The latest year, 2019, is rated 17–19 MPG.

Which Ford Flex model year has the best gas mileage?

The 2015 Ford Flex Flex 3.5L 6-cyl FWD has the highest combined rating since 2009, at 20 MPG.

How much does a Ford Flex cost to fuel per year?

For MY2019, EPA-rated configurations cost $3,440–$3,840 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,440.

Has the Ford Flex's fuel economy improved over time?

Not much. The most efficient configuration is rated 19 MPG in both 2009 and 2019.

Which Ford Flex model years have the same ratings?

EPA lists identical ratings as the previous year for 2019. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.