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Pontiac G8 Fuel Economy Data

4dr Sedan 361-hp 6.0L V8 6-sp shiftable automatic RWD

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
flat lead none 10 25 0 65 80 18.081
flat lead none 10 25 0 65 75 17.650
flat med none 10 30 0 60 75 16.000
flat med none 10 20 0 70 75 18.165
flat lead none 10 25 0 65 75 18.436
flat med none 10 20 0 70 75 16.561
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flat med none 10 15 0 75 75 18.500
flat med none 5 37 32 26 60 17.813
flat med none 10 25 0 65 75 17.989
flat lead none 20 30 0 50 75 16.464
flat lead none 10 25 0 65 80 19.253
flat med none 10 30 10 50 75 17.300
hills med light 10 10 10 70 70 20.500
hills med light 4 17 17 63 70 19.500
flat med hvy 5 5 80 10 60 18.100
flat med light 10 20 20 50 74 21.800
flat lead none 0 0 100 0 N/A 17.900
flat med none 30 30 0 40 70 18.900
flat med hvy 25 25 25 25 80 18.900
hills lead light 5 16 63 16 75 16.400
hills med light 10 10 10 70 70 20.800
hills med light 10 10 10 70 70 22.000
hills med light 10 10 10 70 70 21.000
hills med light 10 10 10 70 70 20.000
flat med light 5 60 10 25 75 14.500

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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
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
 

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.