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Pontiac G8 vs. GMC Terrain MPG

Chart is based on 201 fuel economy reports for the Pontiac G8 and 289 fuel economy reports for the GMC Terrain.

Pontiac G8 MPG

Pontiac G8 Pontiac G8 2009 18.0 MPG Highway Percentage 61 percent Pontiac G8 Pontiac G8 2009 18.6 MPG Highway Percentage 68 percent Pontiac G8 Pontiac G8 2009 21.0 MPG Highway Percentage 30 percent Pontiac G8 Pontiac G8 2008 18.5 MPG Highway Percentage 52 percent 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
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD
hills lead light 10 14 16 61 75 18.0  
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD
flat light light 3 21 9 68 63 18.6  
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD
flat med light 2 10 58 30 65 21.0  
2008 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD
flat med none 10 21 16 52 75 18.5  
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD
flat med none 0 0 31 69 60 19.1  

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This page shows only averages. See all the Pontiac G8 fuel economy data.

GMC Terrain MPG

GMC Terrain GMC Terrain 2020 24.4 MPG Highway Percentage 64 percent GMC Terrain GMC Terrain 2016 23.3 MPG Highway Percentage 96 percent GMC Terrain GMC Terrain 2014 27.1 MPG Highway Percentage 100 percent GMC Terrain GMC Terrain 2013 16.4 MPG Highway Percentage 5 percent GMC Terrain GMC Terrain 2013 24.0 MPG Highway Percentage 37 percent GMC Terrain GMC Terrain 2012 17.8 MPG Highway Percentage 33 percent GMC Terrain GMC Terrain 2012 21.5 MPG Highway Percentage 60 percent GMC Terrain GMC Terrain 2012 24.5 MPG Highway Percentage 90 percent GMC Terrain GMC Terrain 2011 20.3 MPG Highway Percentage 30 percent GMC Terrain GMC Terrain 2011 25.6 MPG Highway Percentage 92 percent GMC Terrain GMC Terrain 2011 23.8 MPG Highway Percentage 49 percent GMC Terrain GMC Terrain 2011 20.4 MPG Highway Percentage 40 percent GMC Terrain GMC Terrain 2010 21.0 MPG Highway Percentage 41 percent GMC Terrain GMC Terrain 2010 20.4 MPG Highway Percentage 57 percent GMC Terrain GMC Terrain 2010 25.7 MPG Highway Percentage 78 percent GMC Terrain GMC Terrain 2010 25.0 MPG Highway Percentage 79 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
2020 4dr SUV turbocharged 252hp 2.0L I4
9-speed shiftable automatic 4WD
flat med none 0 0 36 64 80 24.4  
2016 4dr SUV 301-horsepower 3.6L V6
6-speed shiftable automatic AWD
hills med none 1 3 1 96 112 23.3  
2014 4dr SUV 301-horsepower 3.6L V6
6-speed shiftable automatic FWD
flat light none 0 0 0 100 50 27.1  
2013 4dr SUV 301-horsepower 3.6L V6
6-speed shiftable automatic AWD
flat light hvy 10 10 75 5 80 16.4  
2013 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic FWD
flat light light 7 19 37 37 60 24.0  
2012 4dr SUV 264-horsepower 3.0L V6
6-speed shiftable automatic AWD
flat med none 3 13 53 33 58 17.8  
2012 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic FWD
flat light none 5 15 20 60 70 21.5  
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2012 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic AWD
flat med light 0 5 5 90 100 24.5  
2011 4dr SUV 264-horsepower 3.0L V6
6-speed shiftable automatic FWD
flat light none 0 0 70 30 75 20.3  
2011 4dr SUV 264-horsepower 3.0L V6
6-speed shiftable automatic AWD
hills light light 1 2 5 92 110 25.6  
2011 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic FWD
flat light none 5 13 33 49 66 23.8  
2011 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic AWD
flat light none 9 28 23 40 71 20.4  
2010 4dr SUV 264-horsepower 3.0L V6
6-speed shiftable automatic FWD
flat med light 6 4 49 41 64 21.0  
2010 4dr SUV 264-horsepower 3.0L V6
6-speed shiftable automatic AWD
flat light none 2 6 35 57 89 20.4  
2010 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic FWD
flat light light 5 7 10 78 93 25.7  
2010 4dr SUV 182-horsepower 2.4L I4
6-speed shiftable automatic AWD
flat light none 4 9 8 79 92 25.0  

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This page shows only averages. See all the GMC Terrain fuel economy data.

Pontiac G8 vs. GMC Terrain 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 and GMC Terrain's where a car was driven. So you can get an idea of their real-world MPG based on how and where you drive a car.

See TrueDelta's information for all Sedans
See TrueDelta's information for all Pontiac models and GMC models.

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 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
 

What Our Members Are Saying about the Real Gas Mileage of the 2001 GMC Terrain

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