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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.

Reported MPG

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Infiniti G Gas Mileage

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
2012 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat light light 0 0 0 100 75 25.6
2012 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat light light 0 0 0 100 75 25.6  
  Averages flat light light 0 0 0 100 75 25.6
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2012 Infiniti G fuel economy has been averaging 25.6 MPG (miles per gallon).

The 2012 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 100 percent of the miles driven). The rest of the miles were in heavy traffic (0 percent), in the suburbs (0 percent), and in the city (0 percent).

In addition the average 2012 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC on only some of the time.
 
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
2012 4dr Sedan 218-horsepower 2.5L V6
7-speed shiftable automatic AWD
flat light none 0 30 0 70 60 23.7
2012 4dr Sedan 218-horsepower 2.5L V6
7-speed shiftable automatic AWD
flat light none 0 30 0 70 60 23.7  
  Averages flat light none 0 30 0 70 60 23.7
With the 218-horsepower 2.5L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2012 Infiniti G has been averaging 23.7 MPG (miles per gallon).

The 2012 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 60 miles per hour (about 70 percent of the miles driven). The rest of the miles were in the city (30 percent), in heavy traffic (0 percent), and in the suburbs (0 percent).

In addition the average 2012 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
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
2011 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
hills med none 15 25 40 20 70 19.0
  hills med light 10 20 45 25 60 19.5
  flat light light 10 0 30 60 70 23.0
  flat med light 10 0 30 60 70 21.8
  flat light light 5 10 5 80 70 25.7
2011 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat med light 10 11 30 49 68 21.8  
  Averages flat med light 10 11 30 49 68 21.8
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2011 Infiniti G gas mileage has been averaging 21.8 MPG (miles per gallon).

The 2011 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 68 miles per hour (about 49 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in the city (11 percent), and in heavy traffic (10 percent).

In addition the average 2011 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2011 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med light 1 10 14 75 65 22.0
  flat med hvy 0 10 15 75 75 23.6
  flat med none 13 13 33 40 75 19.7
2011 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med light 5 11 21 63 72 21.8  
  Averages flat med light 5 11 21 63 72 21.8
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2011 Infiniti G fuel economy has been averaging 21.8 MPG (miles per gallon).

The 2011 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 72 miles per hour (about 63 percent of the miles driven). The rest of the miles were in the suburbs (21 percent), in the city (11 percent), and in heavy traffic (5 percent).

In addition the average 2011 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2011 4dr Sedan 218-horsepower 2.5L V6
7-speed shiftable automatic RWD
flat light light 5 0 0 95 80 27.5
  flat med light 1 1 7 91 70 25.4
  flat light light 0 0 5 95 80 29.0
  flat med light 5 5 70 20 65 21.0
2011 4dr Sedan 218-horsepower 2.5L V6
7-speed shiftable automatic RWD
flat med light 3 2 21 75 74 25.7  
  Averages flat med light 3 2 21 75 74 25.7
With the 218-horsepower 2.5L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, the 2011 Infiniti G has been averaging 25.7 MPG (miles per gallon).

The 2011 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 74 miles per hour (about 75 percent of the miles driven). The rest of the miles were in the suburbs (21 percent), in heavy traffic (3 percent), and in the city (2 percent).

In addition the average 2011 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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 25.6
  flat med light 5 10 0 85 81 29.8
  flat med light 10 20 20 50 81 24.7
  flat med hvy 0 0 5 95 80 27.0
  flat med light 0 15 0 85 81 29.0
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat med light 4 11 5 80 81 27.2  
  Averages flat med light 4 11 5 80 81 27.2
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2010 Infiniti G gas mileage has been averaging 27.2 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 81 miles per hour (about 80 percent of the miles driven). The rest of the miles were in the city (11 percent), in the suburbs (5 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 on only some of the time.
 
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 0 0 30 70 75 22.0
  flat med none 0 0 10 90 75 27.2
  flat med none 0 0 10 90 75 26.6
  flat med none 0 0 10 90 75 26.0
  flat med none 0 5 75 20 75 20.1
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med none 0 1 27 72 75 24.4  
  Averages flat med none 0 1 27 72 75 24.4
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2010 Infiniti G fuel economy has been averaging 24.4 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 72 percent of the miles driven). The rest of the miles were in the suburbs (27 percent), in the city (1 percent), and in heavy traffic (0 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.
 
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
flat med hvy 0 100 0 0 N/A 18.5
  flat med none 0 0 0 100 75 28.0
  flat lead none 20 30 20 30 74 18.4
  flat med hvy 0 10 20 70 75 24.0
  flat med light 0 13 9 78 70 27.0
2010 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD
flat med light 4 31 10 56 74 23.2  
  Averages flat med light 4 31 10 56 74 23.2
With the 328-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2010 Infiniti G has been averaging 23.2 MPG (miles per gallon).

The 2010 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 74 miles per hour (about 56 percent of the miles driven). The rest of the miles were in the city (31 percent), in the suburbs (10 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 on only some of the time.
 
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 18.0
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 gas mileage 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.
 
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 25.6
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, 2010 Infiniti G fuel economy 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.
 
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
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat light none 50 0 0 50 65 21.6
  flat med hvy 0 0 10 90 75 22.6
  flat med none 10 15 10 65 70 21.0
  flat light hvy 0 75 0 25 65 22.1
  flat med light 10 10 15 65 60 25.8
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat med light 14 20 7 59 67 22.6  
  Averages flat med light 14 20 7 59 67 22.6
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, the 2009 Infiniti G has been averaging 22.6 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 67 miles per hour (about 59 percent of the miles driven). The rest of the miles were in the city (20 percent), in heavy traffic (14 percent), and in the suburbs (7 percent).

In addition the average 2009 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat light none 9 18 55 18 65 16.1
  flat med hvy 5 5 5 85 60 24.6
  flat med light 5 75 5 15 70 18.4
  flat med hvy 5 15 55 25 60 16.9
  flat med none 5 15 55 25 60 19.1
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat med light 6 26 35 34 63 19.0  
  Averages flat med light 6 26 35 34 63 19.0
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2009 Infiniti G gas mileage has been averaging 19.0 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly in the suburbs (about 35 percent of the miles driven). The rest of the miles were on the highway at an average speed of 63 miles per hour (34 percent), in the city (26 percent), and in heavy traffic (6 percent).

In addition the average 2009 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2009 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD
flat light light 0 9 0 91 70 24.5
2009 4dr Sedan 328-horsepower 3.7L V6
6-speed manual RWD
flat light light 0 9 0 91 70 24.5  
  Averages flat light light 0 9 0 91 70 24.5
With the 328-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2009 Infiniti G fuel economy has been averaging 24.5 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 91 percent of the miles driven). The rest of the miles were in the city (9 percent), in heavy traffic (0 percent), and in the suburbs (0 percent).

In addition the average 2009 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC on only some of the time.
 
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
2009 2dr Hardtop conv. 325-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat lead hvy 25 25 25 25 75 20.0
  flat med light 0 50 0 50 75 21.9
  flat lead hvy 25 25 25 25 75 20.0
2009 2dr Hardtop conv. 325-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat lead hvy 17 33 17 33 75 20.6  
  Averages flat lead hvy 17 33 17 33 75 20.6
With the 325-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, the 2009 Infiniti G has been averaging 20.6 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly in the city (about 33 percent of the miles driven). The rest of the miles were on the highway at an average speed of 75 miles per hour (33 percent), in heavy traffic (17 percent), and in the suburbs (17 percent).

In addition the average 2009 Infiniti G in this analysis was driven on flat terrain with a lead foot and the AC on most or all of the time.
 
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
2009 2dr Hardtop conv. 325-horsepower 3.7L V6
6-speed manual RWD
flat lead none 10 10 70 10 70 15.0
2009 2dr Hardtop conv. 325-horsepower 3.7L V6
6-speed manual RWD
flat lead none 10 10 70 10 70 15.0  
  Averages flat lead none 10 10 70 10 70 15.0
With the 325-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2009 Infiniti G gas mileage has been averaging 15.0 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly in the suburbs (about 70 percent of the miles driven). The rest of the miles were in heavy traffic (10 percent), in the city (10 percent), and on the highway at an average speed of 70 miles per hour (10 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.
 
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
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat lead light 0 0 10 90 80 22.0
  flat med none 5 5 20 70 75 20.0
  flat med hvy 16 39 0 45 75 17.6
  flat lead hvy 16 39 0 45 75 17.0
  flat med light 20 10 20 50 75 17.2
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic RWD
flat med light 11 19 10 60 76 18.8  
  Averages flat med light 11 19 10 60 76 18.8
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2009 Infiniti G fuel economy has been averaging 18.8 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 76 miles per hour (about 60 percent of the miles driven). The rest of the miles were in the city (19 percent), in heavy traffic (11 percent), and in the suburbs (10 percent).

In addition the average 2009 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat light light 10 10 10 70 60 20.0
  flat light light 10 10 10 70 70 20.4
  flat light light 10 10 10 70 60 21.2
  flat med hvy 10 10 10 70 60 20.6
  flat light light 10 10 10 70 60 19.6
2009 2dr Coupe 330-horsepower 3.7L V6
7-speed shiftable automatic AWD
flat light light 10 10 10 70 62 20.4  
  Averages flat light light 10 10 10 70 62 20.4
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2009 Infiniti G has been averaging 20.4 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 62 miles per hour (about 70 percent of the miles driven). The rest of the miles were in heavy traffic (10 percent), in the suburbs (10 percent), and in the city (10 percent).

In addition the average 2009 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC on only some of the time.
 
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
2009 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD
hills light none 0 33 33 33 60 20.0
  mtns med none 0 30 0 70 75 21.0
2009 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD
mtns med none 0 32 17 52 68 20.5  
  Averages mtns med none 0 32 17 52 68 20.5
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2009 Infiniti G gas mileage has been averaging 20.5 MPG (miles per gallon).

The 2009 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 68 miles per hour (about 52 percent of the miles driven). The rest of the miles were in the city (32 percent), in the suburbs (17 percent), and in heavy traffic (0 percent).

In addition the average 2009 Infiniti G in this analysis was driven on mountainous terrain with a medium foot and the AC not used at all.
 
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
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat lead light 15 25 25 35 80 17.6
  flat med hvy 10 15 45 30 65 20.3
  flat med light 5 76 0 19 62 15.7
  flat med none 0 0 50 50 65 22.0
  flat lead hvy 0 0 5 95 80 24.0
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med light 6 23 25 46 70 19.9  
  Averages flat med light 6 23 25 46 70 19.9
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2008 Infiniti G fuel economy has been averaging 19.9 MPG (miles per gallon).

The 2008 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 46 percent of the miles driven). The rest of the miles were in the suburbs (25 percent), in the city (23 percent), and in heavy traffic (6 percent).

In addition the average 2008 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 10 10 30 50 65 18.6
  flat med light 10 10 30 50 65 19.5
  flat med light 10 10 30 50 65 19.1
  flat med light 10 10 30 50 65 19.7
  flat med light 4 30 40 26 65 18.2
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 9 14 32 45 65 19.0  
  Averages flat med light 9 14 32 45 65 19.0
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2008 Infiniti G has been averaging 19.0 MPG (miles per gallon).

The 2008 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 65 miles per hour (about 45 percent of the miles driven). The rest of the miles were in the suburbs (32 percent), in the city (14 percent), and in heavy traffic (9 percent).

In addition the average 2008 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2008 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD
flat med hvy 5 23 27 45 80 19.2
  flat med hvy 5 15 30 50 80 20.2
  mtns lead light 5 5 0 90 80 22.0
  flat med hvy 5 15 30 50 80 20.1
  flat med hvy 5 15 10 70 80 21.5
2008 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD
flat med hvy 5 15 19 61 80 20.6  
  Averages flat med hvy 5 15 19 61 80 20.6
With the 328-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2008 Infiniti G gas mileage has been averaging 20.6 MPG (miles per gallon).

The 2008 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 80 miles per hour (about 61 percent of the miles driven). The rest of the miles were in the suburbs (19 percent), in the city (15 percent), and in heavy traffic (5 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.
 
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
2008 2dr Coupe 330-horsepower 3.7L V6
5-speed shiftable automatic RWD
flat lead light 10 30 20 40 75 15.9
  flat lead light 10 30 20 40 40 14.2
  flat lead light 10 30 20 40 75 17.9
  flat lead light 10 30 20 40 75 18.6
  flat med light 10 30 20 40 70 20.2
2008 2dr Coupe 330-horsepower 3.7L V6
5-speed shiftable automatic RWD
flat lead light 10 30 20 40 67 17.4  
  Averages flat lead light 10 30 20 40 67 17.4
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2008 Infiniti G fuel economy has been averaging 17.4 MPG (miles per gallon).

The 2008 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 67 miles per hour (about 40 percent of the miles driven). The rest of the miles were in the city (30 percent), in the suburbs (20 percent), and in heavy traffic (10 percent).

In addition the average 2008 Infiniti G in this analysis was driven on flat terrain with a lead foot and the AC on only some of the time.
 
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
2008 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD
flat med none 0 5 70 25 70 20.2
  flat light none 0 5 75 20 70 20.8
  flat med none 0 5 75 20 70 19.5
  flat light none 0 5 70 25 70 20.3
  flat med none 0 5 70 25 70 20.6
2008 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD
flat med none 0 5 72 23 70 20.3  
  Averages flat med none 0 5 72 23 70 20.3
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2008 Infiniti G has been averaging 20.3 MPG (miles per gallon).

The 2008 Infiniti Gs in this analysis were driven mostly in the suburbs (about 72 percent of the miles driven). The rest of the miles were on the highway at an average speed of 70 miles per hour (23 percent), in the city (5 percent), and in heavy traffic (0 percent).

In addition the average 2008 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med hvy 21 24 25 31 60 18.0
  flat med light 0 25 5 70 75 19.2
  flat med light 0 20 30 50 75 18.4
  hills med light 0 10 10 80 75 18.0
  flat v.lt light 0 0 0 100 65 26.2
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med light 4 16 14 66 70 20.0  
  Averages flat med light 4 16 14 66 70 20.0
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2007 Infiniti G gas mileage has been averaging 20.0 MPG (miles per gallon).

The 2007 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 66 percent of the miles driven). The rest of the miles were in the city (16 percent), in the suburbs (14 percent), and in heavy traffic (4 percent).

In addition the average 2007 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 0 25 35 40 75 17.9
  flat med none 0 15 20 65 75 19.1
  flat med none 0 19 33 48 70 17.2
  flat med none 0 15 35 50 70 18.4
  flat med light 0 20 30 50 70 17.0
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 0 19 31 51 72 17.9  
  Averages flat med none 0 19 31 51 72 17.9
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2007 Infiniti G fuel economy has been averaging 17.9 MPG (miles per gallon).

The 2007 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 72 miles per hour (about 51 percent of the miles driven). The rest of the miles were in the suburbs (31 percent), in the city (19 percent), and in heavy traffic (0 percent).

In addition the average 2007 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2007 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD
hills med none 5 35 30 30 60 21.0
  hills med light 21 24 25 29 60 19.0
  flat med none 5 30 30 35 70 19.0
  flat light hvy 7 27 7 60 75 21.4
  flat med hvy 10 30 30 30 75 24.4
2007 4dr Sedan 306-horsepower 3.5L V6
6-speed manual RWD
flat med light 10 29 24 37 68 21.0  
  Averages flat med light 10 29 24 37 68 21.0
With the 328-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2007 Infiniti G has been averaging 21.0 MPG (miles per gallon).

The 2007 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 68 miles per hour (about 37 percent of the miles driven). The rest of the miles were in the city (29 percent), in the suburbs (24 percent), and in heavy traffic (10 percent).

In addition the average 2007 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2007 2dr Coupe 275-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat lead hvy 0 85 5 10 70 12.5
  flat lead hvy 0 100 0 0 N/A 10.1
2007 2dr Coupe 275-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat lead hvy 0 93 3 5 70 11.3  
  Averages flat lead hvy 0 93 3 5 70 11.3
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2007 Infiniti G gas mileage has been averaging 11.3 MPG (miles per gallon).

The 2007 Infiniti Gs in this analysis were driven mostly in the city (about 93 percent of the miles driven). The rest of the miles were on the highway at an average speed of 70 miles per hour (5 percent), in the suburbs (3 percent), and in heavy traffic (0 percent).

In addition the average 2007 Infiniti G in this analysis was driven on flat terrain with a lead foot and the AC on most or all of the time.
 
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
2007 2dr Coupe 293-horsepower 3.5L V6
6-speed manual RWD
flat med none 5 25 20 50 70 18.5
2007 2dr Coupe 293-horsepower 3.5L V6
6-speed manual RWD
flat med none 5 25 20 50 70 18.5  
  Averages flat med none 5 25 20 50 70 18.5
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2007 Infiniti G fuel economy has been averaging 18.5 MPG (miles per gallon).

The 2007 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 50 percent of the miles driven). The rest of the miles were in the city (25 percent), in the suburbs (20 percent), and in heavy traffic (5 percent).

In addition the average 2007 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 10 10 30 50 70 20.2
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 10 10 30 50 70 20.2  
  Averages flat med light 10 10 30 50 70 20.2
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2006 Infiniti G has been averaging 20.2 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 50 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in heavy traffic (10 percent), and in the city (10 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 10 20 30 40 75 21.3
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 10 20 30 40 75 21.3  
  Averages flat med none 10 20 30 40 75 21.3
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G gas mileage has been averaging 21.3 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 40 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in the city (20 percent), and in heavy traffic (10 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 30 20 30 20 70 20.8
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 30 20 30 20 70 20.8  
  Averages flat med light 30 20 30 20 70 20.8
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G fuel economy has been averaging 20.8 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly in heavy traffic (about 30 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), on the highway at an average speed of 70 miles per hour (20 percent), and in the city (20 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 10 20 30 40 75 21.9
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 10 20 30 40 75 21.9  
  Averages flat med none 10 20 30 40 75 21.9
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2006 Infiniti G has been averaging 21.9 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 40 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in the city (20 percent), and in heavy traffic (10 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 5 20 25 50 65 20.1
  flat light light 5 30 20 45 75 20.1
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 5 25 23 48 70 20.1  
  Averages flat med light 5 25 23 48 70 20.1
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G gas mileage has been averaging 20.1 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 48 percent of the miles driven). The rest of the miles were in the city (25 percent), in the suburbs (23 percent), and in heavy traffic (5 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 20 10 30 40 70 20.8
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 20 10 30 40 70 20.8  
  Averages flat med none 20 10 30 40 70 20.8
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G fuel economy has been averaging 20.8 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 40 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in heavy traffic (20 percent), and in the city (10 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 2 3 15 80 75 19.5
  flat med light 10 15 15 60 75 19.5
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 6 9 15 70 75 19.5  
  Averages flat med light 6 9 15 70 75 19.5
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2006 Infiniti G has been averaging 19.5 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 70 percent of the miles driven). The rest of the miles were in the suburbs (15 percent), in the city (9 percent), and in heavy traffic (6 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 20 20 30 30 70 21.4
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 20 20 30 30 70 21.4  
  Averages flat med none 20 20 30 30 70 21.4
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G gas mileage has been averaging 21.4 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 30 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in heavy traffic (20 percent), and in the city (20 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat light none 0 0 10 90 70 22.6
  flat light none 0 60 30 10 70 16.3
  hills light none 0 0 20 80 70 25.3
  flat light light 0 0 80 20 70 19.3
  flat light none 0 60 20 20 70 16.3
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat light none 0 24 32 44 70 20.0  
  Averages flat light none 0 24 32 44 70 20.0
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G fuel economy has been averaging 20.0 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 44 percent of the miles driven). The rest of the miles were in the suburbs (32 percent), in the city (24 percent), and in heavy traffic (0 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
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
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat lead none 10 40 40 10 60 18.5
  flat med hvy 0 0 0 100 85 22.1
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat lead light 5 20 20 55 73 20.3  
  Averages flat lead light 5 20 20 55 73 20.3
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2006 Infiniti G has been averaging 20.3 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 73 miles per hour (about 55 percent of the miles driven). The rest of the miles were in the city (20 percent), in the suburbs (20 percent), and in heavy traffic (5 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a lead foot and the AC on only some of the time.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 10 10 20 60 70 19.9
  flat light none 0 0 0 100 70 26.7
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med light 5 5 10 80 70 23.3  
  Averages flat med light 5 5 10 80 70 23.3
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G gas mileage has been averaging 23.3 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 80 percent of the miles driven). The rest of the miles were in the suburbs (10 percent), in heavy traffic (5 percent), and in the city (5 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 20 10 30 40 70 21.7
2006 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med none 20 10 30 40 70 21.7  
  Averages flat med none 20 10 30 40 70 21.7
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2006 Infiniti G fuel economy has been averaging 21.7 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 40 percent of the miles driven). The rest of the miles were in the suburbs (30 percent), in heavy traffic (20 percent), and in the city (10 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat v.lt hvy 0 0 0 100 60 29.6
  flat lead hvy 10 20 10 60 70 19.0
  flat lead light 0 15 0 85 65 19.7
  flat light none 5 20 0 75 75 23.0
  flat med hvy 0 90 0 10 60 21.0
2006 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med light 3 29 2 66 66 22.5  
  Averages flat med light 3 29 2 66 66 22.5
With the 260-horsepower 3.5L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2006 Infiniti G has been averaging 22.5 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 66 miles per hour (about 66 percent of the miles driven). The rest of the miles were in the city (29 percent), in heavy traffic (3 percent), and in the suburbs (2 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD
flat light light 15 25 0 60 70 18.9
  flat med none 5 10 60 25 60 19.7
  flat med light 12 73 2 12 60 18.4
  flat med light 10 60 10 20 70 18.5
  flat med light 2 4 30 64 70 23.4
2006 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD
flat med light 9 34 20 36 66 19.8  
  Averages flat med light 9 34 20 36 66 19.8
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2006 Infiniti G gas mileage has been averaging 19.8 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 66 miles per hour (about 36 percent of the miles driven). The rest of the miles were in the city (34 percent), in the suburbs (20 percent), and in heavy traffic (9 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2006 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med hvy 5 5 10 80 60 22.4
  flat light hvy 20 30 35 15 70 17.0
  flat med hvy 5 5 10 80 60 21.2
  flat light none 2 58 0 40 70 20.0
  flat med hvy 11 11 44 33 60 19.0
2006 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med hvy 9 22 20 50 64 19.9  
  Averages flat med hvy 9 22 20 50 64 19.9
With the 280-horsepower 3.5L V6 engine, 5-speed shiftable automatic transmission, and rear-wheel drive, 2006 Infiniti G fuel economy has been averaging 19.9 MPG (miles per gallon).

The 2006 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 64 miles per hour (about 50 percent of the miles driven). The rest of the miles were in the city (22 percent), in the suburbs (20 percent), and in heavy traffic (9 percent).

In addition the average 2006 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on most or all of the time.
 
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
2005 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 25 25 0 50 55 18.1
  flat lead none 12 20 0 68 90 20.3
  flat lead hvy 2 2 1 95 75 23.1
  flat med light 0 80 15 5 74 15.7
  flat light none 10 30 60 0 N/A 18.0
2005 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 10 31 15 44 74 19.0  
  Averages flat med none 10 31 15 44 74 19.0
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2005 Infiniti G has been averaging 19.0 MPG (miles per gallon).

The 2005 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 74 miles per hour (about 44 percent of the miles driven). The rest of the miles were in the city (31 percent), in the suburbs (15 percent), and in heavy traffic (10 percent).

In addition the average 2005 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2005 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med light 5 20 20 55 60 24.0
2005 4dr Sedan 298-horsepower 3.5L V6
6-speed manual RWD
flat med light 5 20 20 55 60 24.0  
  Averages flat med light 5 20 20 55 60 24.0
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2005 Infiniti G gas mileage has been averaging 24.0 MPG (miles per gallon).

The 2005 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 60 miles per hour (about 55 percent of the miles driven). The rest of the miles were in the city (20 percent), in the suburbs (20 percent), and in heavy traffic (5 percent).

In addition the average 2005 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2005 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
hills med light 5 10 65 20 65 18.0
  hills med light 0 20 20 60 70 20.3
  flat med light 0 30 60 10 60 18.8
2005 4dr Sedan 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
hills med light 2 20 48 30 65 19.0  
  Averages hills med light 2 20 48 30 65 19.0
With the 260-horsepower 3.5L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2005 Infiniti G fuel economy has been averaging 19.0 MPG (miles per gallon).

The 2005 Infiniti Gs in this analysis were driven mostly in the suburbs (about 48 percent of the miles driven). The rest of the miles were on the highway at an average speed of 65 miles per hour (30 percent), in the city (20 percent), and in heavy traffic (2 percent).

In addition the average 2005 Infiniti G in this analysis was driven on hilly terrain with a medium foot and the AC on only some of the time.
 
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
2005 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD
hills med none 5 5 80 10 65 22.6
  flat light light 0 10 0 90 70 27.2
  hills med none 5 5 80 10 65 20.6
  hills med none 5 5 80 10 65 22.6
  flat med light 20 40 10 30 70 18.5
2005 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD
hills med none 7 13 50 30 67 22.3  
  Averages hills med none 7 13 50 30 67 22.3
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2005 Infiniti G has been averaging 22.3 MPG (miles per gallon).

The 2005 Infiniti Gs in this analysis were driven mostly in the suburbs (about 50 percent of the miles driven). The rest of the miles were on the highway at an average speed of 67 miles per hour (30 percent), in the city (13 percent), and in heavy traffic (7 percent).

In addition the average 2005 Infiniti G in this analysis was driven on hilly terrain with a medium foot and the AC not used at all.
 
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
2005 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
hills med none 0 0 20 80 75 28.0
  hills med light 0 20 50 30 75 24.5
  flat light none 5 5 30 60 65 27.5
  flat light none 20 60 10 10 70 18.5
  flat light none 20 60 10 10 70 17.4
2005 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat light none 9 29 24 38 71 23.2  
  Averages flat light none 9 29 24 38 71 23.2
With the 280-horsepower 3.5L V6 engine, 5-speed shiftable automatic transmission, and rear-wheel drive, 2005 Infiniti G gas mileage has been averaging 23.2 MPG (miles per gallon).

The 2005 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 71 miles per hour (about 38 percent of the miles driven). The rest of the miles were in the city (29 percent), in the suburbs (24 percent), and in heavy traffic (9 percent).

In addition the average 2005 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
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
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
mtns lead none 0 60 0 40 75 15.0
  flat med none 100 0 0 0 N/A 17.4
  flat light light 0 10 10 80 75 23.1
  flat light none 0 9 3 88 70 20.1
  flat light light 0 10 10 80 75 22.5
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 20 18 5 58 74 19.6  
  Averages flat med none 20 18 5 58 74 19.6
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2004 Infiniti G fuel economy has been averaging 19.6 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 74 miles per hour (about 58 percent of the miles driven). The rest of the miles were in heavy traffic (20 percent), in the city (18 percent), and in the suburbs (5 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat light none 0 0 60 40 65 18.4
  flat light none 0 10 60 30 60 21.0
  flat light none 20 70 0 10 60 16.5
  flat light none 0 0 30 70 65 19.1
  flat light hvy 0 0 60 40 70 18.3
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat light none 4 16 42 38 64 18.7  
  Averages flat light none 4 16 42 38 64 18.7
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, the 2004 Infiniti G has been averaging 18.7 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly in the suburbs (about 42 percent of the miles driven). The rest of the miles were on the highway at an average speed of 64 miles per hour (38 percent), in the city (16 percent), and in heavy traffic (4 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
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
2004 4dr Sedan 280-horsepower 3.5L V6
6-speed manual RWD
flat light none 10 10 10 70 62 23.3
  flat light none 10 10 10 70 62 23.3
  flat light none 10 10 10 70 56 23.1
  flat light light 10 10 0 80 62 23.1
2004 4dr Sedan 280-horsepower 3.5L V6
6-speed manual RWD
flat light none 10 10 8 73 61 23.2  
  Averages flat light none 10 10 8 73 61 23.2
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2004 Infiniti G gas mileage has been averaging 23.2 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 61 miles per hour (about 73 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 (8 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
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
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat light none 20 70 0 10 60 16.5
  flat med light 50 10 10 30 70 19.0
  flat light none 0 0 50 50 70 20.0
  flat med light 0 30 0 70 80 23.3
  flat lead none 20 20 30 30 65 16.5
2004 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic AWD
flat med none 18 26 18 38 69 19.1  
  Averages flat med none 18 26 18 38 69 19.1
With the 328-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2004 Infiniti G fuel economy has been averaging 19.1 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 69 miles per hour (about 38 percent of the miles driven). The rest of the miles were in the city (26 percent), in heavy traffic (18 percent), and in the suburbs (18 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2004 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD
flat med hvy 10 10 10 70 60 18.3
  flat med light 5 10 30 55 65 21.0
  hills light light 5 5 0 90 75 26.2
  flat light light 20 40 30 10 62 23.6
  flat med hvy 0 40 30 30 60 16.2
2004 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD
flat med light 8 21 20 51 64 21.1  
  Averages flat med light 8 21 20 51 64 21.1
With the 260-horsepower 3.5L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2004 Infiniti G has been averaging 21.1 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 64 miles per hour (about 51 percent of the miles driven). The rest of the miles were in the city (21 percent), in the suburbs (20 percent), and in heavy traffic (8 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2004 2dr Coupe 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 10 10 10 70 60 20.0
2004 2dr Coupe 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 10 10 10 70 60 20.0  
  Averages flat med none 10 10 10 70 60 20.0
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, 2004 Infiniti G gas mileage has been averaging 20.0 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 60 miles per hour (about 70 percent of the miles driven). The rest of the miles were in heavy traffic (10 percent), in the suburbs (10 percent), and in the city (10 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2004 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD
flat light light 13 13 50 25 60 20.5
  flat med light 10 50 30 10 70 15.8
  flat med light 10 50 30 10 70 16.6
  flat light light 17 17 11 56 60 23.0
  flat med light 15 25 35 25 65 21.3
2004 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD
flat med light 13 31 31 25 65 19.4  
  Averages flat med light 13 31 31 25 65 19.4
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2004 Infiniti G fuel economy has been averaging 19.4 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly in the city (about 31 percent of the miles driven). The rest of the miles were in the suburbs (31 percent), on the highway at an average speed of 65 miles per hour (25 percent), and in heavy traffic (13 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2004 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 5 10 25 60 70 18.8
  flat light none 20 15 5 60 60 20.1
  flat med light 60 30 0 10 60 18.0
2004 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 28 18 10 43 63 19.0  
  Averages flat med none 28 18 10 43 63 19.0
With the 280-horsepower 3.5L V6 engine, 5-speed shiftable automatic transmission, and rear-wheel drive, the 2004 Infiniti G has been averaging 19.0 MPG (miles per gallon).

The 2004 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 63 miles per hour (about 43 percent of the miles driven). The rest of the miles were in heavy traffic (28 percent), in the city (18 percent), and in the suburbs (10 percent).

In addition the average 2004 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 5 25 25 45 60 22.4
  flat med none 0 5 5 90 75 24.2
  flat light none 10 10 15 65 60 23.3
  hills light none 40 20 10 30 70 20.8
  flat med hvy 15 5 25 55 75 25.8
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat med none 14 13 16 57 68 23.3  
  Averages flat med none 14 13 16 57 68 23.3
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and all-wheel drive, 2003 Infiniti G gas mileage has been averaging 23.3 MPG (miles per gallon).

The 2003 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 68 miles per hour (about 57 percent of the miles driven). The rest of the miles were in the suburbs (16 percent), in heavy traffic (14 percent), and in the city (13 percent).

In addition the average 2003 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
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
2003 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD
mtns v.lt hvy 0 0 5 95 70 26.8
  flat med hvy 0 75 5 20 70 22.4
  flat v.lt hvy 0 0 5 95 70 32.4
  hills med light 0 0 40 60 75 16.4
2003 4dr Sedan 260-horsepower 3.5L V6
6-speed manual RWD
hills light hvy 0 19 14 68 71 24.5  
  Averages hills light hvy 0 19 14 68 71 24.5
With the 260-horsepower 3.5L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2003 Infiniti G fuel economy has been averaging 24.5 MPG (miles per gallon).

The 2003 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 71 miles per hour (about 68 percent of the miles driven). The rest of the miles were in the city (19 percent), in the suburbs (14 percent), and in heavy traffic (0 percent).

In addition the average 2003 Infiniti G in this analysis was driven on hilly terrain with a light foot and the AC on most or all of the time.
 
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
2003 2dr Coupe 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat light none 5 5 5 85 62 24.7
  flat light none 0 30 50 20 70 18.3
2003 2dr Coupe 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
flat light none 3 18 28 53 66 21.5  
  Averages flat light none 3 18 28 53 66 21.5
With the 330-horsepower 3.7L V6 engine, 7-speed shiftable automatic transmission, and rear-wheel drive, the 2003 Infiniti G has been averaging 21.5 MPG (miles per gallon).

The 2003 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 66 miles per hour (about 53 percent of the miles driven). The rest of the miles were in the suburbs (28 percent), in the city (18 percent), and in heavy traffic (3 percent).

In addition the average 2003 Infiniti G in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
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
2003 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD
flat lead light 5 15 40 40 75 21.0
  flat med hvy 20 30 20 30 75 18.0
  flat med light 25 50 15 10 68 15.7
  flat med light 5 45 25 25 81 11.8
  hills med hvy 0 0 30 70 70 24.0
2003 2dr Coupe 280-horsepower 3.5L V6
6-speed manual RWD
flat med light 11 28 26 35 74 18.1  
  Averages flat med light 11 28 26 35 74 18.1
With the 330-horsepower 3.7L V6 engine, 6-speed manual transmission, and rear-wheel drive, 2003 Infiniti G gas mileage has been averaging 18.1 MPG (miles per gallon).

The 2003 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 74 miles per hour (about 35 percent of the miles driven). The rest of the miles were in the city (28 percent), in the suburbs (26 percent), and in heavy traffic (11 percent).

In addition the average 2003 Infiniti G in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
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
2003 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
mtns med light 0 25 0 75 70 21.2
  flat med hvy 5 6 4 85 70 22.6
  mtns med none 0 60 0 40 75 18.4
  flat med light 11 56 11 22 60 20.1
  flat light light 10 30 20 40 75 19.8
2003 2dr Coupe 280-horsepower 3.5L V6
5-speed shiftable automatic RWD
hills med light 5 35 7 52 70 20.4  
  Averages hills med light 5 35 7 52 70 20.4
With the 280-horsepower 3.5L V6 engine, 5-speed shiftable automatic transmission, and rear-wheel drive, 2003 Infiniti G fuel economy has been averaging 20.4 MPG (miles per gallon).

The 2003 Infiniti Gs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 52 percent of the miles driven). The rest of the miles were in the city (35 percent), in the suburbs (7 percent), and in heavy traffic (5 percent).

In addition the average 2003 Infiniti G in this analysis was driven on hilly terrain with a medium foot and the AC on only some of the time.
 
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
2002 4dr Sedan 145-horsepower 2.0L I4
5-speed manual RWD
flat v.lt none 5 10 65 20 65 28.7
2002 4dr Sedan 145-horsepower 2.0L I4
5-speed manual RWD
flat v.lt none 5 10 65 20 65 28.7  
  Averages flat v.lt none 5 10 65 20 65 28.7
With the 260-horsepower 3.5L V6 engine, 6-speed manual transmission, and rear-wheel drive, the 2002 Infiniti G has been averaging 28.7 MPG (miles per gallon).

The 2002 Infiniti Gs in this analysis were driven mostly in the suburbs (about 65 percent of the miles driven). The rest of the miles were on the highway at an average speed of 65 miles per hour (20 percent), in the city (10 percent), and in heavy traffic (5 percent).

In addition the average 2002 Infiniti G in this analysis was driven on flat terrain with an ultra-light foot and the AC not used at all.

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What Our Members Are Saying about the Real Infiniti G MPG

Infiniti G Fuel Economy: Pros
Year Body/Powertrain Comment
2009 4dr Sedan 328-hp 3.7L V6 7-sp 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.
2007 4dr Sedan 328-hp 3.7L V6 7-sp 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.
Infiniti G Fuel Economy: Cons
Year Body/Powertrain Comment
2010 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic AWD Fuel economy is poor - about 19 MPG average.
2010 4dr Sedan 328-hp 3.7L V6 7-sp 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.
2009 4dr Sedan 328-hp 3.7L V6 7-sp 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-hp 3.7L V6 7-sp shiftable automatic AWD average 18 in town 24 highway.
2009 4dr Sedan 328-hp 3.7L V6 7-sp 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.
2009 2dr Coupe 330-hp 3.7L V6 7-sp 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.
2008 2dr Coupe 330-hp 3.7L V6 7-sp 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!
2008 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic RWD burns too much fuel, I would like another 6 mpg even if power were cut
2008 4dr Sedan 328-hp 3.7L V6 7-sp 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.
2008 4dr Sedan 328-hp 3.7L V6 7-sp shiftable automatic RWD Not too great. My average is 19 - 20 mpg, mostly city.