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Infiniti G MPG

MPG Number of Vehicles
15 miles per gallon 4 vehicles
16 miles per gallon 1 vehicles
17 miles per gallon 7 vehicles
18 miles per gallon 8 vehicles
19 miles per gallon 6 vehicles
20 miles per gallon 11 vehicles
21 miles per gallon 8 vehicles
22 miles per gallon 7 vehicles
23 miles per gallon 1 vehicles
24 miles per gallon 2 vehicles
25 miles per gallon 2 vehicles
26 miles per gallon 2 vehicles
27 miles per gallon 0 vehicles
28 miles per gallon 1 vehicles
Model Year Body/Powertrain MPG  
2009 2009 2dr Hardtop conv. 325-hp 3.7L V6 6-sp manual RWD 15
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With the turbocharged 400hp 3.0L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, the 2009 Infiniti G has been averaging 15 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 10 percent of the miles driven). The rest of the miles were in the city (10 percent), in heavy traffic (10 percent), and in the suburbs (0 percent).

In addition, the average 2009 Infiniti G in this analysis was driven on flat terrain with a lead foot and the AC not used at all.
2009 2009 2dr Hardtop conv. 325-hp 3.7L V6 7-sp shiftable automatic RWD 20.63
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2009 2009 4dr Sedan 328-hp 3.7L V6 6-sp manual RWD 24.5
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2009 2009 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic RWD 23.15
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2009 2009 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic AWD 18.57
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2009 2009 2dr Coupe 330-hp 3.7L V6 6-sp manual RWD 20.66
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2009 2009 2dr Coupe 330-hp 3.7L V6 7-sp shiftable automatic RWD 19.53
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2009 2009 2dr Coupe 330-hp 3.7L V6 7-sp shiftable automatic AWD 20.38
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See TrueDelta's information for all Infiniti models.

What Our Members Are Saying about the Real Gas Mileage of the 2009 Infiniti G

2009 Infiniti G Real Gas Mileage: Cons
YearBody/PowertrainComment
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
To be honest, it is exactly what I expected, so no real beefs with it. That said, if you are looking for a car that gets better than 19 or so combined, this is not it. Decent freeway miles (24-27/g) but in city it is hard to beat 16/g. see full Infiniti G review
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
Fuel economy is poor - about 19 MPG average. see full Infiniti G review
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic RWD
You do not buy a performance car and expect to get good gas mileage. At a 5 mpg or greater difference from my last car, it is taking some getting used too. see full Infiniti G review
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD
average 18 in town 24 highway. see full Infiniti G review
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
With such a large displaced engine and so much power you will find that you will have so-so mpg if you drive mainly in the city like I do. Especially if you are a "spirited" driver like I tend to be. I am averaging about 14-16mpg 95% city. On the highway its a different story. I have averaged up to 28mpg @ 78mph, I kind of wish I drove more on the highway. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
Not too great. My average is 19 - 20 mpg, mostly city. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
burns too much fuel, I would like another 6 mpg even if power were cut see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
With all that power available its hard not to use it. Expect in city driving to deliver less than 20mpg. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
5th gear is short and really infringes on getting decent mileage (15-17 in mixed and 22-23 hwy). Accurate EPA figures but the new 7 speed AT for 2009 really helps. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
The car is just not about fuel economy. You pay for performance. I get ~18 in suburb style driving and ~23 on highway but that maybe just me. see full Infiniti G review
 

2009 Infiniti G Gas Mileage (MPG)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Infiniti G's real-world MPG based on how and where you drive a car.