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Pontiac G8 Fuel Economy (L/100km)

L/100km Number of Vehicles
8 liters per 100 kilometers 2 vehicles
9 liters per 100 kilometers 3 vehicles
10 liters per 100 kilometers 13 vehicles
11 liters per 100 kilometers 22 vehicles
12 liters per 100 kilometers 58 vehicles
13 liters per 100 kilometers 38 vehicles
14 liters per 100 kilometers 31 vehicles
15 liters per 100 kilometers 15 vehicles
16 liters per 100 kilometers 8 vehicles
17 liters per 100 kilometers 9 vehicles
18 liters per 100 kilometers 1 vehicles
19 liters per 100 kilometers 0 vehicles
20 liters per 100 kilometers 0 vehicles
21 liters per 100 kilometers 0 vehicles
22 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2009 2009 4dr Sedan 415-hp 6.2L V8 6-sp manual RWD 12.8
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With the 309 kilowatts 6.2L V8 engine, 6-speed manual transmission, and rear-wheel drive, the 2009 Pontiac G8 has been averaging 12.8 L/100km (liters per 100 kilometers).

The 2009 Pontiac G8s in this analysis were driven mostly on the highway at an average speed of 75 kilometers per hour (about 61 percent of the kilometers driven). The rest of the kilometers were in the city (14 percent), in heavy traffic (9.5 percent), and in the suburbs (0 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.
2009 2009 4dr Sedan 361-hp 6.0L V8 6-sp shiftable automatic RWD 12.95
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2009 2009 4dr Sedan 256-hp 3.6L V6 5-sp shiftable automatic RWD 11.43
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2008 2008 4dr Sedan 361-hp 6.0L V8 6-sp shiftable automatic RWD 12.83
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2008 2008 4dr Sedan 256-hp 3.6L V6 5-sp shiftable automatic RWD 12.53
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What Our Members Are Saying about the Real Gas Mileage of the Pontiac G8

Pontiac G8 Real Gas Mileage: Cons
YearBody/PowertrainComment
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 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 415-horsepower 6.2L V8
6-speed manual RWD
Average fuel economy 15 mpg in mixed driving. see full Pontiac G8 review
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 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
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 (L/100km)

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 L/100km based on how and where you drive a car.