- Newest year: 2012
- Gas
- Midsize cars
2011-2012 Infiniti G25 MPG & Fuel Cost
2 model years · 22–23 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 3 of 10 midsize car configurations, MY2012. Ranked against all rated configurations, not sales-weighted.
2011-2012 Infiniti G25 at a glance
The 2011-2012 Infiniti G25 covers 2 model years in the EPA database (4 configurations in all), rated 22–23 MPG combined. The newest model year, 2012, costs about $3,460 a year to fuel for its most efficient version, the G25 2.5L 6-cyl RWD (23 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2012.
2011-2012 Infiniti G25 by model year
What the 2012 G25 2.5L 6-cyl RWD costs to drive
Per month
$288
$3,460 a year ÷ 12
Per 25 miles
$5.77
Per 100 miles
$23.07
Five years
$17,300
5 × the yearly cost, prices held at today's level
vs the midsize car median
$430more a year
Class median $3,030 a year, MY2012
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2012 Infiniti G25 MPG
Versus 2011: The most efficient configuration stays at 23 MPG. Its annual cost goes from $3,450 to $3,460, $10 more.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| G25 (Most efficient) | 2.5L 6-cyl | RWD | 20 | 29 | 23 | $3,460 |
| G25x | 2.5L 6-cyl | AWD | 19 | 27 | 22 | $3,620 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2011 Infiniti G25 MPG
22–23 MPG · $3,450–$3,620/yr
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| G25 (Most efficient) | 2.5L 6-cyl | RWD | 20 | 29 | 23 | $3,450 |
| G25x | 2.5L 6-cyl | AWD | 19 | 27 | 22 | $3,620 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the G25 2.5L 6-cyl RWD: $4,130 in California and $3,000 in Texas, a $1,130 difference.
- California $4,130
- Washington $3,880
- New York $3,420
- Florida $3,160
- Texas $3,000
Similar cars
Closest combined MPG among MY2012 midsize car models.
Generations
- 2011-2012
Frequently asked questions
What gas mileage does the 2011-2012 Infiniti G25 get?
EPA rates the 2011-2012 Infiniti G25 at 22–23 MPG combined across 4 configurations and 2 model years. The most efficient version, the 2012 G25 2.5L 6-cyl RWD, is rated 23 MPG (20 city, 29 highway).
Which years had the best MPG in the 2011-2012 Infiniti G25?
Every model year of the 2011-2012 Infiniti G25 tops out at 23 MPG combined, so no year is better than another.
Did EPA ratings change during the 2011-2012 Infiniti G25?
Yes. Ratings changed in 2012.
How much does it cost to fuel a 2012 Infiniti G25 per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the G25 2.5L 6-cyl RWD costs about $3,460 a year. Across all 2 configurations the cost runs $3,460–$3,620 a year. That is a $160 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2012 Infiniti G25 100 miles?
About $23.07 per 100 miles for the G25 2.5L 6-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $23.07 and $24.13 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2012 Infiniti G25 more efficient in the city or on the highway?
The G25 2.5L 6-cyl RWD is rated 20 city and 29 highway MPG, so it is more efficient on the highway, by 9 MPG.
How does the 2012 Infiniti G25 compare with other midsize car configurations?
The G25 2.5L 6-cyl RWD costs about $3,460 a year to fuel, $430 more than the class median of $3,030, and less than 3 of 10 midsize car configurations. The comparison covers all 148 rated midsize car configurations for MY2012, not weighted by sales.
Is the 2012 Infiniti G25 different from the 2011 model?
The most efficient configuration stays at 23 MPG. Its annual cost goes from $3,450 to $3,460, $10 more. EPA lists 2 configurations for 2012 against 2 configurations for 2011. See the 2011 Infiniti G25 for that year.