- Gas
- Standard SUVs
- MY2004–2013
Infiniti QX56 MPG & Fuel Cost by Year
10 model years · 2004–2013
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Infiniti QX56 fuel economy at a glance
EPA has rated the Infiniti QX56 for 10 model years, 2004 to 2013. Across those years its combined rating runs 14–16 MPG. The latest model year, 2013, has 2 configurations rated 16 MPG combined and costing $5,040–$5,090 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2004 is the 2013 QX56 5.6L 8-cyl RWD, at 16 MPG.
Infiniti QX56 MPG by year
| Year | Gas (MPG) | $/yr |
|---|---|---|
| 2011-2013 (Z62) Generation page | ||
| 2013 | 16 | $5,040–$5,090 |
| 2012 | 16 | $5,040–$5,090 |
| 2011 | 16 | $5,030–$5,090 |
| 2004-2010 (JA60) Generation page | ||
| 2010 | 14 | $5,740 |
| 2009 | 14 | $5,740 |
| 2008 | 14 | $5,740 |
| 2007 | 14 | $5,740 |
| 2006 | 14 | $4,670 |
| 2005 | 14 | $4,670 |
| 2004 | 14 | $4,670 |
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 QX56 generations
2 generations between 2004 and 2013. Open one for the table of every model year and configuration.
2013 powertrain options
More Infiniti models
Frequently asked questions
What is the Infiniti QX56's gas mileage by year?
EPA combined ratings for the Infiniti QX56 run 14–16 MPG across model years 2004 to 2013. The latest year, 2013, is rated 16 MPG.
Which Infiniti QX56 model year has the best gas mileage?
The 2013 Infiniti QX56 QX56 5.6L 8-cyl RWD has the highest combined rating since 2004, at 16 MPG.
How much does a Infiniti QX56 cost to fuel per year?
For MY2013, EPA-rated configurations cost $5,040–$5,090 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $5,040.
Has the Infiniti QX56's fuel economy improved over time?
Yes. The most efficient configuration moved from 14 MPG in 2004 to 16 MPG in 2013, 2 MPG more.
Which Infiniti QX56 model years have the same ratings?
EPA lists identical ratings as the previous year for 2005, 2006, 2009. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.