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- MY2000–2003
Infiniti QX4 MPG & Fuel Cost by Year
4 model years · 2000–2003
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Infiniti QX4 fuel economy at a glance
EPA has rated the Infiniti QX4 for 4 model years, 2000 to 2003. Across those years its combined rating runs 15–16 MPG. The latest model year, 2003, has 2 configurations rated 15–16 MPG combined and costing $4,080–$4,360 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2000 is the 2003 QX4 3.5L 6-cyl RWD, at 16 MPG. EPA ratings go back to 1984: the earliest rating on this page is 15 MPG in 1997.
Infiniti QX4 MPG by year
| Year | Gas (MPG) | $/yr |
|---|---|---|
| 2001-2003 Generation page | ||
| 2003 | 15–16 | $4,080–$4,360 |
| 2002 | 15 | $4,360 |
| 2001 | 15 | $4,360 |
| 2000 Generation page | ||
| 2000 | 15 | $4,360 |
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 QX4 generations
2 generations between 2000 and 2003. Open one for the table of every model year and configuration.
2003 powertrain options
Infiniti QX4 MPG history, 1997–1999
| Year | Gas (MPG) |
|---|---|
| 1999 | 15 |
| 1998 | 15 |
| 1997 | 15 |
EPA re-estimated the ratings of pre-2008 vehicles under its 2008 method; these are the re-estimated values.
More Infiniti models
Frequently asked questions
What is the Infiniti QX4's gas mileage by year?
EPA combined ratings for the Infiniti QX4 run 15–16 MPG across model years 2000 to 2003. The latest year, 2003, is rated 15–16 MPG.
Which Infiniti QX4 model year has the best gas mileage?
The 2003 Infiniti QX4 QX4 3.5L 6-cyl RWD has the highest combined rating since 2000, at 16 MPG.
How much does a Infiniti QX4 cost to fuel per year?
For MY2003, EPA-rated configurations cost $4,080–$4,360 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $4,080.
Has the Infiniti QX4's fuel economy improved over time?
Yes. The most efficient configuration moved from 15 MPG in 2000 to 16 MPG in 2003, 1 MPG more. Going back further, the best rating in 1984 was 15 MPG.