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Infiniti G Fuel Economy Data

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

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 lead light 15 25 25 35 80 17.600
flat light light 100 0 0 0 N/A 20.800
flat med hvy 10 15 45 30 65 20.300
flat med hvy 10 40 10 40 74 18.800
flat med hvy 5 5 5 85 74 25.300
flat med none 0 0 100 0 N/A 21.400
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flat med none 0 0 100 0 N/A 17.100
flat med hvy 15 35 45 5 80 17.500
flat med none 0 0 80 20 70 19.200
flat lead hvy 0 0 75 25 60 19.900
flat light none 15 10 15 60 60 24.000
flat light hvy 0 10 50 40 60 21.429
flat med light 5 76 0 19 62 15.700
flat med none 0 0 50 50 65 22.000
flat light hvy 3 15 40 42 60 23.750
flat light hvy 3 15 40 42 65 23.000
hills med light 5 35 50 10 60 21.000
hills med none 5 15 60 20 60 20.500
hills light none 0 5 0 95 70 25.577
mtns lead none 15 25 0 60 80 19.600
flat light none 0 70 0 30 65 17.021
flat lead hvy 0 0 5 95 80 24.000
flat lead hvy 11 11 67 11 60 18.000
flat light none 25 50 0 25 70 18.100
flat light light 25 50 0 25 70 19.000
flat light hvy 0 80 0 20 70 22.800

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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.