MENU
1 0 3 4 3 4

We are 103,000+ car owners sharing real-world car information.

Join Us

Pontiac G8 Fuel Economy (MPG)

Flagged Gas Tank

 characters remaining
Pontiac G8 Pontiac G8 2009 18.5 MPG Highway Percentage 61 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
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD		 flat lead none 0 5 5 90 80 17.000
  hills lead light 19 23 26 32 70 20.000
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD		 hills lead light 10 14 16 61 75 18.5  
  Averages hills lead light 10 14 16 61 75 18.5
With the 415-horsepower 6.2L V8 engine, 6-speed manual transmission, and rear-wheel drive, 2009 Pontiac G8 fuel economy has been averaging 18.5 MPG (miles per gallon).

The 2009 Pontiac G8s in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 61 percent of the miles driven). The rest of the miles were in the suburbs (16 percent), in the city (14 percent), and in heavy traffic (10 percent).

In addition the average 2009 Pontiac G8 in this analysis was driven on hilly terrain with a lead foot and the AC on only some of the time.
 
Pontiac G8 Pontiac G8 2009 18.6 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
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat med light 0 20 0 80 60 16.842
  flat light light 0 20 0 80 60 19.000
  flat light light 0 20 0 80 60 16.396
  flat light light 0 20 0 80 60 18.246
  flat light light 0 20 0 80 60 19.851
  flat light light 0 20 0 80 60 23.607
  flat light light 0 20 0 80 60 19.096
  flat light light 0 20 0 80 60 20.000
  flat light light 0 20 0 80 60 19.243
  flat light light 0 20 0 80 60 19.286
  flat light light 0 20 0 80 60 17.257
  flat light light 0 20 0 80 60 19.486
  flat light light 0 20 0 80 60 17.566
  flat light light 0 20 0 80 60 13.889
  flat light light 0 20 0 80 60 14.261
  flat light light 0 20 0 80 60 21.035
  flat light light 0 20 0 80 60 16.014
  flat med light 0 20 0 80 60 19.000
  flat light light 0 20 0 80 60 18.617
  flat light light 0 20 0 80 60 19.630
  flat light light 0 20 0 80 60 17.620
  flat light light 0 20 0 80 60 17.408
  flat light light 0 20 0 80 60 18.480
  flat light light 0 20 0 80 60 17.097
  flat light light 0 20 0 80 60 19.755
  flat light light 0 20 0 80 60 19.091
  flat light light 0 20 0 80 60 17.436
  flat light light 0 20 0 80 60 16.083
  flat light light 0 20 0 80 60 17.857
  flat light light 0 20 0 80 60 20.630
  flat light light 0 20 0 80 60 19.440
  flat light light 0 20 0 80 60 17.547
  flat light light 0 20 0 80 60 15.455
  flat light light 0 20 0 80 60 17.067
  flat med light 0 50 0 50 60 18.922
  flat light light 0 20 0 80 60 14.029
  flat light light 0 20 0 80 60 16.311
  flat med light 0 50 0 50 60 18.922
  flat light light 0 20 0 80 60 14.213
  flat light light 0 20 0 80 60 15.388
  flat light light 0 20 0 80 60 15.231
  flat light light 0 20 0 80 60 17.357
  flat light light 0 20 0 80 60 16.231
  flat lead light 10 20 35 35 65 24.000
  flat med hvy 35 15 20 30 70 19.000
  flat lead light 10 20 20 50 70 26.000
  hills light light 5 5 5 85 70 31.000
  flat med hvy 60 10 10 20 70 18.000
  flat med light 10 60 5 25 70 19.000
  hills med light 0 5 5 90 70 25.300
  flat light none 20 21 23 36 60 14.000
  flat light none 20 21 23 36 60 14.000
  flat med none 40 10 10 40 65 16.500
  flat med none 10 10 20 60 60 19.200
  flat light light 0 5 0 95 60 29.000
  flat med light 0 20 0 80 60 23.000
  flat med light 0 50 0 50 70 22.200
  flat med light 0 50 0 50 70 19.200
  flat lead light 0 0 0 100 85 22.000
  flat med none 6 0 39 56 60 19.100
  flat lead none 0 50 50 0 N/A 14.000
  flat med none 0 0 0 100 80 24.500
  flat med hvy 5 0 20 75 75 18.900
  hills lead none 0 35 15 50 70 15.200
  hills lead none 0 40 40 20 75 20.400
  flat light light 0 20 0 80 60 19.700
  flat light light 0 20 0 80 60 18.027
  flat med light 0 20 0 80 60 19.291
  flat light light 0 20 0 80 60 18.023
  flat med light 0 20 0 80 60 20.333
  flat light light 0 20 0 80 60 15.420
  flat light light 0 20 0 80 60 18.933
  flat med light 0 50 0 50 60 18.298
  flat light light 0 20 0 80 60 16.108
  flat light light 0 20 0 80 60 17.379
  flat med light 0 20 0 80 60 19.048
  flat med none 0 0 100 0 N/A 14.500
  flat med none 0 0 100 0 N/A 16.900
  hills med none 10 25 45 20 70 16.300
  flat med light 30 30 30 10 70 15.400
  flat med light 30 30 30 10 70 15.400
  flat light light 0 20 0 80 60 19.215
  flat light light 0 20 0 80 60 17.353
  flat light light 0 5 25 70 55 22.606
  flat light light 0 20 0 80 60 14.400
  flat light light 0 20 0 80 60 20.000
  flat lead hvy 15 30 30 25 75 18.500
  flat light light 22 21 23 35 74 22.000
  flat light light 22 21 23 35 74 22.200
  flat med light 10 20 50 20 60 17.800
  flat light light 0 20 0 80 60 17.869
  flat light light 0 20 0 80 60 18.942
  flat light light 0 20 0 80 60 18.042
  flat light light 0 20 0 80 60 19.921
  flat light light 0 20 0 80 60 17.391
  flat light light 0 20 0 80 60 19.023
  flat med light 10 20 50 20 60 17.300
  flat med light 1 58 21 20 80 24.200
  flat med hvy 0 15 15 70 65 22.100
  flat med hvy 0 15 15 70 65 22.100
  hills light light 0 10 30 60 70 19.200
  flat light light 0 20 0 80 60 18.874
  flat light light 0 0 0 100 60 26.000
  flat lead light 2 5 88 5 80 14.800
  flat med light 0 0 0 100 80 20.000
  flat med none 0 50 0 50 80 16.300
  flat med light 11 5 21 63 60 20.500
  flat light light 0 20 0 80 60 16.928
  flat med none 0 5 80 15 60 18.000
  flat med light 0 20 0 80 60 22.875
  flat light light 0 20 0 80 60 19.727
  flat light light 0 20 0 80 60 17.700
  flat med light 0 50 0 50 60 16.713
  flat light light 0 20 0 80 60 18.524
  flat med light 0 20 0 80 60 20.860
  flat med light 0 50 0 50 60 15.938
  flat light light 0 20 0 80 60 19.367
  flat light light 0 20 0 80 60 23.226
  flat light light 0 20 0 80 60 17.355
  flat light light 0 20 0 80 60 19.222
  flat light light 0 20 0 80 60 21.707
  flat light light 0 20 0 80 60 19.138
  flat light light 0 20 0 80 60 18.143
  flat light light 0 20 0 80 60 17.719
  flat light light 0 20 0 80 60 21.043
  flat light light 0 20 0 80 60 10.833
  flat light light 0 20 0 80 60 14.019
  flat light light 0 20 0 80 60 17.325
  flat light light 0 20 0 80 60 14.220
  flat light light 0 20 0 80 60 16.080
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat light light 3 21 9 68 63 18.6  
  Averages flat light light 3 21 9 68 63 18.6
With the 361-horsepower 6.0L V8 engine, 6-speed shiftable automatic transmission, and rear-wheel drive, the 2009 Pontiac G8 has been averaging 18.6 MPG (miles per gallon).

The 2009 Pontiac G8s in this analysis were driven mostly on the highway at an average speed of 63 miles per hour (about 68 percent of the miles driven). The rest of the miles were in the city (21 percent), in the suburbs (9 percent), and in heavy traffic (3 percent).

In addition the average 2009 Pontiac G8 in this analysis was driven on flat terrain with a light foot and the AC on only some of the time.
 
Pontiac G8 Pontiac G8 2009 21.0 MPG Highway Percentage 30 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
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med hvy 5 11 84 0 N/A 24.500
  flat med hvy 0 20 20 60 70 21.000
  flat med none 0 0 70 30 60 17.400
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med light 2 10 58 30 65 21.0  
  Averages flat med light 2 10 58 30 65 21.0
With the 256-horsepower 3.6L V6 engine, 5-speed shiftable automatic transmission, and rear-wheel drive, 2009 Pontiac G8 gas mileage has been averaging 21.0 MPG (miles per gallon).

The 2009 Pontiac G8s in this analysis were driven mostly in the suburbs (about 58 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 (10 percent), and in heavy traffic (2 percent).

In addition the average 2009 Pontiac G8 in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
Pontiac G8 Pontiac G8 2008 18.5 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
2008 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 hills med light 10 10 10 70 70 20.500
  hills lead light 5 16 63 16 75 16.400
  hills med light 10 10 10 70 70 22.000
  flat med hvy 25 25 25 25 80 18.900
  hills med light 10 10 10 70 70 20.000
  hills med light 10 10 10 70 70 21.000
  flat med none 30 30 0 40 70 18.900
  hills med light 10 10 10 70 70 20.800
  flat med light 5 60 10 25 75 14.500
  flat lead none 0 0 100 0 N/A 17.900
  flat med light 10 20 20 50 74 21.800
  hills med light 4 17 17 63 70 19.500
  flat med hvy 5 5 80 10 60 18.100
  flat lead none 10 25 0 65 75 17.650
  flat lead none 10 25 0 65 80 18.081
  flat lead none 10 25 0 65 80 19.253
  flat med none 10 15 0 75 75 18.500
  flat med none 5 37 32 26 60 17.813
  flat med none 10 30 0 60 75 16.000
  flat med none 10 20 0 70 75 16.561
  flat med none 10 20 0 70 75 18.165
  flat lead none 20 30 0 50 75 16.464
  flat med none 10 25 0 65 75 17.989
  flat med none 10 30 10 50 75 17.300
  flat lead none 10 25 0 65 75 18.436
2008 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat med none 10 21 16 52 73 18.5  
  Averages flat med none 10 21 16 52 73 18.5
With the 361-horsepower 6.0L V8 engine, 6-speed shiftable automatic transmission, and rear-wheel drive, 2008 Pontiac G8 fuel economy has been averaging 18.5 MPG (miles per gallon).

The 2008 Pontiac G8s in this analysis were driven mostly on the highway at an average speed of 73 miles per hour (about 52 percent of the miles driven). The rest of the miles were in the city (21 percent), in the suburbs (16 percent), and in heavy traffic (10 percent).

In addition the average 2008 Pontiac G8 in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
Pontiac G8 Pontiac G8 2008 19.1 MPG Highway Percentage 69 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
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med none 0 0 30 70 60 20.900
  flat med none 0 0 30 70 60 17.752
  flat med none 0 0 30 70 60 18.766
  flat med none 0 0 30 70 60 21.876
  flat med light 1 15 70 14 80 24.000
  flat med none 0 0 30 70 60 18.714
  flat med none 0 0 30 70 60 18.729
  flat med none 0 0 30 70 60 16.088
  flat med none 0 0 30 70 60 20.312
  flat med none 0 0 30 70 60 15.214
  flat med none 0 0 30 70 60 24.821
  flat med none 0 0 30 70 60 22.617
  flat med none 0 0 30 70 60 16.561
  flat med none 0 0 30 70 60 16.740
  flat med none 0 0 30 70 60 15.028
  flat med none 0 0 30 70 60 19.563
  flat med none 0 0 30 70 60 19.867
  flat med none 0 0 30 70 60 18.355
  flat med none 0 0 30 70 60 13.333
  flat med none 0 0 30 70 60 17.500
  flat med none 0 0 30 70 60 19.596
  flat med none 0 0 30 70 60 20.287
  flat med none 0 0 30 70 60 20.579
  flat med none 0 0 30 70 60 18.522
  flat med none 0 0 30 70 60 19.842
  flat med none 0 0 30 70 60 17.000
  flat med none 0 0 30 70 60 18.918
  flat med none 0 0 30 70 60 14.309
  flat med none 0 0 30 70 60 19.468
  flat med none 0 0 30 70 60 20.240
  flat med none 0 0 30 70 60 24.146
  flat med none 0 0 30 70 60 20.308
  flat med none 0 0 30 70 60 15.444
  flat med none 0 0 30 70 60 20.508
  flat med none 0 0 30 70 60 20.541
  flat med none 0 0 30 70 60 20.787
  flat med none 0 0 30 70 60 17.580
  flat med none 0 0 30 70 60 21.063
  flat med none 0 0 30 70 60 17.386
  flat med none 0 0 30 70 60 20.723
  flat med none 0 0 30 70 60 20.492
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med none 0 0 31 69 60 19.1  
  Averages flat med none 0 0 31 69 60 19.1
With the 256-horsepower 3.6L V6 engine, 5-speed shiftable automatic transmission, and rear-wheel drive, the 2008 Pontiac G8 has been averaging 19.1 MPG (miles per gallon).

The 2008 Pontiac G8s in this analysis were driven mostly on the highway at an average speed of 60 miles per hour (about 69 percent of the miles driven). The rest of the miles were in the suburbs (31 percent), in heavy traffic (0 percent), and in the city (0 percent).

In addition the average 2008 Pontiac G8 in this analysis was driven on flat terrain with a medium foot and the AC not used at all.

Return to top

What Our Members Are Saying about the Real Gas Mileage of the 2008 Pontiac G8

2008 Pontiac G8 Real Gas Mileage: Cons
YearBody/PowertrainComment
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed shiftable automatic RWD		 Low teens in town, and 24mpg tops on the highway make this a less than ideal economy car. see full Pontiac G8 review
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 The most MPGs I ever had was 25 and that was all highway driving at about 70. see full Pontiac G8 review
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 Not bad mileage figures given the size of the car and the beast of an engine, but this is not a car for the hybrid set. see full Pontiac G8 review
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 Is very low in stop-and-go traffic. Gets better with time, I understand. see full Pontiac G8 review
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD		 Average fuel economy 15 mpg in mixed driving. see full Pontiac G8 review
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 low 18 mpg city see full Pontiac G8 review
 

Pontiac G8 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 Pontiac G8's real-world MPG based on how and where you drive a car.