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Infiniti G Fuel Economy (MPG)

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Infiniti G Infiniti G 2010 25.3 MPG Highway Percentage 68 percent
Year Body/Powertrain 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
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat med light 5 10 0 85 81 25.600
  flat med none 2 48 0 50 70 22.300
  flat med hvy 0 0 5 95 80 27.000
  flat med light 0 15 0 85 81 29.000
  flat med none 30 15 15 40 60 19.700
  flat med light 10 20 20 50 81 24.700
  flat med light 10 20 20 50 74 24.500
  flat med light 5 10 0 85 81 29.800
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat med light 8 17 8 68 76 25.3  
  Averages flat med light 8 17 8 68 76 25.3
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2010 Infiniti G fuel economy has been averaging 25.3 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 76 miles per hour (about 68 percent of the miles driven). The rest of the miles were in the city (17 percent), in heavy traffic (8 percent), and in the suburbs (8 percent).

In addition the average 2010 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
Infiniti G Infiniti G 2010 22.3 MPG Highway Percentage 52 percent
Year Body/Powertrain 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
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med none 20 15 25 40 75 24.800
  flat med none 0 0 30 70 75 22.000
  flat med none 0 0 15 85 80 24.500
  flat med light 20 15 25 40 75 23.700
  flat med none 0 1 0 99 70 29.000
  flat light hvy 5 15 30 50 65 19.500
  flat light none 0 5 19 76 80 21.000
  flat light light 10 55 25 10 70 16.800
  flat med none 10 50 30 10 75 18.000
  flat med light 10 20 30 40 65 21.500
  flat light none 0 80 20 0 N/A 17.000
  flat med none 5 10 20 65 75 21.100
  flat med none 0 10 80 10 80 19.200
  flat light none 2 10 88 0 N/A 17.500
  flat med none 0 0 10 90 75 27.200
  flat med light 10 50 30 10 75 18.500
  flat med none 0 0 10 90 75 26.000
  flat med none 0 1 0 99 75 27.000
  flat light none 0 5 30 65 60 20.400
  flat med none 0 0 10 90 75 26.639
  flat med hvy 30 10 30 30 75 22.000
  flat med none 0 10 10 80 75 24.018
  flat med none 0 0 5 95 75 25.761
  flat med none 0 5 5 90 75 26.338
  flat med none 0 5 75 20 70 13.916
  flat med none 0 5 75 20 55 20.614
  flat med none 0 5 75 20 55 21.897
  flat lead none 0 2 10 88 75 20.200
  flat med none 0 5 70 25 55 21.189
  flat med none 0 5 75 20 75 20.149
  flat med none 0 5 0 95 75 25.365
  flat med none 0 5 75 20 70 19.836
  flat med none 0 5 75 20 65 23.415
  flat med none 0 5 80 15 55 20.290
  flat med none 0 5 70 25 70 16.683
  flat med none 0 5 10 85 75 23.959
  flat med none 0 40 20 40 75 21.176
  flat med none 0 15 10 75 75 24.824
  flat med none 0 40 20 40 70 22.778
  flat lead none 0 2 10 88 80 21.200
  flat med none 0 0 5 95 75 25.695
  flat med none 0 0 5 95 75 24.943
  flat med light 20 20 30 30 68 23.500
  flat med none 0 5 75 20 70 28.996
  flat med none 0 5 0 95 75 26.015
  flat med none 0 5 80 15 55 20.937
  flat med none 0 5 5 90 75 25.641
  flat med none 0 5 30 65 70 20.487
  flat med none 0 5 70 25 55 20.890
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med none 3 12 33 52 71 22.3  
  Averages flat med none 3 12 33 52 71 22.3
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2010 Infiniti G has been averaging 22.3 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 71 miles per hour (about 52 percent of the miles driven). The rest of the miles were in the suburbs (33 percent), in the city (12 percent), and in heavy traffic (3 percent).

In addition the average 2010 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
Infiniti G Infiniti G 2010 23.0 MPG Highway Percentage 58 percent
Year Body/Powertrain 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
2010 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD
hills med light 30 70 0 0 N/A 15.900
  flat med none 10 80 0 10 60 18.774
  hills med light 5 10 10 75 70 25.100
  hills med light 10 10 0 80 70 26.100
  flat med none 10 30 0 60 70 22.147
  flat med light 10 30 0 60 75 23.000
  flat lead light 10 10 0 80 70 22.100
  hills med light 0 0 0 100 60 25.083
  flat med light 0 13 9 78 70 27.000
  flat med hvy 0 15 35 50 70 21.000
  flat med hvy 0 100 0 0 N/A 18.500
  flat lead none 20 30 20 30 74 18.400
  flat med none 0 0 0 100 75 28.000
  flat light none 0 11 7 82 70 29.500
  flat med hvy 0 10 20 70 75 24.000
2010 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD
flat med light 7 28 7 58 70 23.0  
  Averages flat med light 7 28 7 58 70 23.0
With the 328-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2010 Infiniti G gas mileage has been averaging 23.0 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 58 percent of the miles driven). The rest of the miles were in the city (28 percent), in heavy traffic (7 percent), and in the suburbs (7 percent).

In addition the average 2010 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
Infiniti G Infiniti G 2010 18.0 MPG Highway Percentage 5 percent
Year Body/Powertrain 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
2010 2dr Hardtop conv. 325-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat lead none 5 10 80 5 60 18.000
2010 2dr Hardtop conv. 325-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat lead none 5 10 80 5 60 18.0  
  Averages flat lead none 5 10 80 5 60 18.0
With the 325-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2010 Infiniti G fuel economy has been averaging 18.0 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly in the suburbs (about 80 percent of the miles driven). The rest of the miles were in the city (10 percent), in heavy traffic (5 percent), and on the highway at an average speed of 60 miles per hour (5 percent).

In addition the average 2010 Infiniti G in this analysis was driven on flat terrain with a lead foot and the AC not used at all.
 
Infiniti G Infiniti G 2010 25.6 MPG Highway Percentage 70 percent
Year Body/Powertrain 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
2010 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med none 4 13 13 70 80 25.556
2010 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med none 4 13 13 70 80 25.6  
  Averages flat med none 4 13 13 70 80 25.6
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2010 Infiniti G has been averaging 25.6 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 80 miles per hour (about 70 percent of the miles driven). The rest of the miles were in the city (13 percent), in the suburbs (13 percent), and in heavy traffic (4 percent).

In addition the average 2010 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.

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What Our Members Are Saying about the Real Gas Mileage of the 2010 Infiniti G

2010 Infiniti G Real Gas Mileage: Pros
YearBody/PowertrainComment
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
A downside if you are used to more fuel efficient cars--you pay for performance. NOte that I had a 2005 Chrysler PT Cruiser turbo convertilble (4 cyl.) before I bought the G. It got worse gas mileage.
2010 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.
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
Fuel economy is poor - about 19 MPG average.
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
As noted before, the G will get about 18 around town in stop and go, about 27-28 on the highway.
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.
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD
average 18 in town 24 highway.
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.
 

2010 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.