- Gas
- Midsize cars
- MY2011–2012
Infiniti G25 MPG & Fuel Cost by Year
2 model years · 2011–2012
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Infiniti G25 fuel economy at a glance
EPA has rated the Infiniti G25 for 2 model years, 2011 to 2012. Across those years its combined rating runs 22–23 MPG. The latest model year, 2012, has 2 configurations rated 22–23 MPG combined and costing $3,460–$3,620 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 2012 G25 2.5L 6-cyl RWD, at 23 MPG.
Infiniti G25 MPG by year
| Year | Gas (MPG) | $/yr |
|---|---|---|
| 2011-2012 Generation page | ||
| 2012 | 22–23 | $3,460–$3,620 |
| 2011 | 22–23 | $3,450–$3,620 |
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 G25 generations
1 generations between 2011 and 2012. Open one for the table of every model year and configuration.
2012 powertrain options
More Infiniti models
Frequently asked questions
What is the Infiniti G25's gas mileage by year?
EPA combined ratings for the Infiniti G25 run 22–23 MPG across model years 2011 to 2012. The latest year, 2012, is rated 22–23 MPG.
Which Infiniti G25 model year has the best gas mileage?
The 2012 Infiniti G25 G25 2.5L 6-cyl RWD has the highest combined rating since 2011, at 23 MPG.
How much does a Infiniti G25 cost to fuel per year?
For MY2012, EPA-rated configurations cost $3,460–$3,620 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,460.
Has the Infiniti G25's fuel economy improved over time?
Not much. The most efficient configuration is rated 23 MPG in both 2011 and 2012.