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2011 Infiniti M37 -- NHTSA 1
Shown: 2011 Infiniti M37 -- NHTSA 1. Photo: U.S. National Highway Traffic Safety Administration, Public domain, via Wikimedia Commons
  • Gas
  • Midsize cars
  • MY2011–2013

Infiniti M37 MPG & Fuel Cost by Year

3 model years · 2011–2013

21 MPG
Combined
18 MPG
City
26 MPG
Highway
Annual cost · MY2013 M37 3.7L 6-cyl RWD
$3,790

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

All Infiniti models

Infiniti M37 fuel economy at a glance

EPA has rated the Infiniti M37 for 3 model years, 2011 to 2013. Across those years its combined rating runs 20–21 MPG. The latest model year, 2013, has 2 configurations rated 20–21 MPG combined and costing $3,790–$4,040 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2011 is the 2013 M37 3.7L 6-cyl RWD, at 21 MPG.

Infiniti M37 MPG by year

2022 20112013 Gas 2022 20112013 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Infiniti M37: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2011-2013 (4th gen) Generation page
2013 20–21 $3,790–$4,040
2012 20–21 $3,800–$4,040
2011 20–21 $3,800–$4,040

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.

Infiniti M37 generations

1 generations between 2011 and 2013. Open one for the table of every model year and configuration.

2013 powertrain options

Gas · 3.7L
Combined
20–21 MPG
Per year
$3,790–$4,040
See gas configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · premium gasoline $5.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Infiniti M37's gas mileage by year?

EPA combined ratings for the Infiniti M37 run 20–21 MPG across model years 2011 to 2013. The latest year, 2013, is rated 20–21 MPG.

Which Infiniti M37 model year has the best gas mileage?

The 2013 Infiniti M37 M37 3.7L 6-cyl RWD has the highest combined rating since 2011, at 21 MPG.

How much does a Infiniti M37 cost to fuel per year?

For MY2013, EPA-rated configurations cost $3,790–$4,040 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,790.

Has the Infiniti M37's fuel economy improved over time?

Not much. The most efficient configuration is rated 21 MPG in both 2011 and 2013.

Which Infiniti M37 model years have the same ratings?

EPA lists identical ratings as the previous year for 2012. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.