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Infiniti G Fuel Economy (L/100km)

L/100km Number of Vehicles
8 liters per 100 kilometers 2 vehicles
9 liters per 100 kilometers 7 vehicles
10 liters per 100 kilometers 16 vehicles
11 liters per 100 kilometers 44 vehicles
12 liters per 100 kilometers 38 vehicles
13 liters per 100 kilometers 31 vehicles
14 liters per 100 kilometers 6 vehicles
15 liters per 100 kilometers 9 vehicles
16 liters per 100 kilometers 2 vehicles
17 liters per 100 kilometers 2 vehicles
18 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2008 2008 4dr Sedan 328-hp 3.7L V6 6-sp manual RWD 11.29
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With the 245 kilowatts 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2008 Infiniti G has been averaging 11.29 L/100km (liters per 100 kilometers).

The 2008 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 79 kilometers per hour (about 61.9 percent of the kilometers driven). The rest of the kilometers were in the city (13.5 percent), in heavy traffic (5 percent), and in the suburbs (0 percent).

In addition, the average 2008 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on most or all of the time.
2008 2008 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic RWD 11.67
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2008 2008 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic AWD 12.36
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2008 2008 2dr Coupe 330-hp 3.7L V6 6-sp manual RWD 11.58
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2008 2008 2dr Coupe 330-hp 3.7L V6 7-sp shiftable automatic RWD 12.43
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What Our Members Are Saying about the Real Gas Mileage of the 2008 Infiniti G

2008 Infiniti G Real Gas Mileage: Pros
YearBody/PowertrainComment
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
My average for the life of the car is 21MPG. Not too bad for a car with this power and my lead foot. see full Infiniti G review
2008 Infiniti G Real Gas Mileage: Cons
YearBody/PowertrainComment
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 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 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 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
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 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
2008 2dr Coupe 330-horsepower 3.7L V6
5-speed shiftable automatic RWD
With both highway and city driving, I would only average 19 mpg with moderate gas pedal use vs 24 mpg in the c300, which is AWD. One month of strictly city driving with heavy gas pedal use I average only 13mpg... Yikes! see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Takes a lot of fuel... 14L/100km about. see full Infiniti G review
2008 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD
While not terrible, ~20mpg is by no means phenomenal. Relatively comparable cars get ~23-27mpg, but typically also have smaller engines which explains a good portion of the difference. see full Infiniti G review
 

2008 Infiniti G Gas Mileage (L/100km)

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 L/100km based on how and where you drive a car.