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Infiniti G Fuel Economy Data

4dr Sedan 306-hp 3.5L V6 5-sp shiftable automatic AWD

flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
flat light none 0 10 10 80 70 21.700
flat light none 20 20 0 60 65 18.200
flat light hvy 10 10 15 65 60 18.400
flat light hvy 0 0 0 100 60 24.500
flat med hvy 50 20 30 0 N/A 18.400
flat light none 20 30 0 50 70 19.400
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flat light none 10 10 0 80 65 18.900
flat light light 10 5 2 83 70 22.700
flat light light 10 5 2 83 70 21.905
flat v.lt light 10 5 2 83 70 23.000
flat light none 20 60 0 20 65 14.400
flat light none 0 20 30 50 70 19.200
flat med light 4 30 40 26 65 18.200
flat light none 0 0 70 30 60 19.000
flat light none 5 5 20 70 65 20.900
flat med light 0 0 70 30 65 19.000
flat med light 10 10 30 50 65 19.650
flat med light 10 10 30 50 65 18.637
flat med light 10 10 30 50 65 19.062
flat light light 30 10 20 40 65 19.700
flat med light 30 10 20 40 65 19.700
flat med light 10 15 55 20 75 18.800
flat med light 10 15 55 20 75 16.000
flat med light 10 15 55 20 75 16.600
flat med light 10 15 55 20 70 17.200
flat lead light 20 20 20 40 85 17.600
flat med light 10 10 30 50 65 19.468

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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 (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.