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Pontiac G8 MPG

MPG Number of Vehicles
13 miles per gallon 1 vehicles
14 miles per gallon 1 vehicles
15 miles per gallon 4 vehicles
16 miles per gallon 4 vehicles
17 miles per gallon 6 vehicles
18 miles per gallon 12 vehicles
19 miles per gallon 10 vehicles
20 miles per gallon 11 vehicles
21 miles per gallon 10 vehicles
22 miles per gallon 3 vehicles
23 miles per gallon 1 vehicles
24 miles per gallon 2 vehicles
25 miles per gallon 1 vehicles
Model Year Body/Powertrain MPG  
2008 2008 4dr Sedan 361-hp 6.0L V8 6-sp shiftable automatic RWD 18.5
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With the 349-horsepower 6.0L V8 engine, 6-speed shiftable automatic transmission, and rear-wheel drive, the 2008 Pontiac G8 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 74 miles per hour (about 52.2 percent of the miles driven). The rest of the miles were in the city (21.2 percent), in heavy traffic (10.4 percent), and in the suburbs (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.
2008 2008 4dr Sedan 256-hp 3.6L V6 5-sp shiftable automatic RWD 19.13
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See TrueDelta's information for all Sedans
See TrueDelta's information for all Pontiac models.

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 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 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 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 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
 

2008 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.