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Porsche 911 vs. Pontiac G8 Fuel Economy (g/100m)

Chart is based on 56 fuel economy reports for the Porsche 911 and 201 fuel economy reports for the Pontiac G8.

Porsche 911 g/100m

Porsche 911 Porsche 911 2009 5.3 MPG Highway Percentage 30 percent Porsche 911 Porsche 911 2009 4.7 MPG Highway Percentage 78 percent Porsche 911 Porsche 911 2009 3.7 MPG Highway Percentage 90 percent Porsche 911 Porsche 911 2009 4.3 MPG Highway Percentage 25 percent Porsche 911 Porsche 911 2009 5.1 MPG Highway Percentage 50 percent Porsche 911 Porsche 911 2008 5.0 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2007 4.3 MPG Highway Percentage 30 percent Porsche 911 Porsche 911 2007 4.5 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2007 4.2 MPG Highway Percentage 85 percent Porsche 911 Porsche 911 2006 5.6 MPG Highway Percentage 34 percent Porsche 911 Porsche 911 2006 4.7 MPG Highway Percentage 80 percent Porsche 911 Porsche 911 2006 5.6 MPG Highway Percentage 35 percent Porsche 911 Porsche 911 2006 5.1 MPG Highway Percentage 66 percent Porsche 911 Porsche 911 2005 4.9 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2005 4.8 MPG Highway Percentage 23 percent Porsche 911 Porsche 911 2005 5.2 MPG Highway Percentage 70 percent Porsche 911 Porsche 911 2004 5.6 MPG Highway Percentage 25 percent Porsche 911 Porsche 911 2003 5.6 MPG Highway Percentage 50 percent Porsche 911 Porsche 911 2002 7.7 MPG Highway Percentage 70 percent Porsche 911 Porsche 911 2002 5.0 MPG Highway Percentage 30 percent Porsche 911 Porsche 911 2002 4.5 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2002 5.1 MPG Highway Percentage 10 percent Porsche 911 Porsche 911 2001 5.0 MPG Highway Percentage 25 percent Porsche 911 Porsche 911 2001 4.8 MPG Highway Percentage 20 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 g/100m
2009 2dr Coupe 385-horsepower 3.8L H6
7-speed automated manual RWD		 flat med hvy 2 38 30 30 80 5.3  
2009 2dr Coupe 385-horsepower 3.8L H6
6-speed manual RWD		 flat lead light 1 1 20 78 75 4.7  
2009 2dr Coupe 345-horsepower 3.6L H6
7-speed automated manual RWD		 flat light none 0 10 0 90 75 3.7  
2009 2dr Coupe 345-horsepower 3.6L H6
6-speed manual RWD		 flat v.lt none 5 20 50 25 70 4.3  
2009 2dr Convertible 385-horsepower 3.8L H6
6-speed manual RWD		 flat med light 0 0 50 50 75 5.1  
2008 2dr Coupe 355-horsepower 3.8L H6
5-speed shiftable automatic RWD		 flat med hvy 10 50 0 40 75 5.0  
2007 2dr Coupe turbocharged 480hp 3.6L H6
6-speed manual AWD		 mtns lead hvy 5 25 40 30 70 4.3  
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2007 2dr Coupe 355-horsepower 3.8L H6
6-speed manual RWD		 flat med light 0 30 30 40 70 4.5  
2007 2dr Coupe 325-horsepower 3.6L H6
5-speed shiftable automatic RWD		 flat lead hvy 5 0 10 85 75 4.2  
2006 2dr Coupe 355-horsepower 3.8L H6
6-speed manual RWD		 flat med light 5 32 29 34 65 5.6  
2006 2dr Coupe 325-horsepower 3.6L H6
6-speed manual RWD		 flat med hvy 10 0 10 80 60 4.7  
2006 2dr Convertible 355-horsepower 3.8L H6
6-speed manual RWD		 flat med light 0 5 60 35 75 5.6  
2006 2dr Convertible 355-horsepower 3.8L H6
6-speed manual AWD		 flat med none 5 9 20 66 76 5.1  
2005 2dr Coupe 355-horsepower 3.8L H6
6-speed manual RWD		 hills lead light 0 10 50 40 85 4.9  
2005 2dr Coupe 325-horsepower 3.6L H6
5-speed shiftable automatic RWD		 flat med light 7 13 57 23 60 4.8  
2005 2dr Convertible 325-horsepower 3.6L H6
6-speed manual RWD		 flat med light 0 10 20 70 60 5.2  
2004 2dr Coupe 345-horsepower 3.6L H6
6-speed manual RWD		 flat med none 5 40 30 25 70 5.6  
2003 2dr Coupe turbocharged 450hp 3.6L H6
6-speed manual AWD		 mtns med light 2 3 45 50 90 5.6  
2002 2dr Coupe turbocharged 450hp 3.6L H6
6-speed manual AWD		 flat med none 5 15 10 70 60 7.7  
2002 2dr Coupe turbocharged 450hp 3.6L H6
5-speed shiftable automatic AWD		 flat med hvy 35 35 0 30 70 5.0  
2002 2dr Coupe 320-horsepower 3.6L H6
6-speed manual RWD		 flat v.lt none 10 20 30 40 65 4.5  
2002 2dr Convertible 320-horsepower 3.6L H6
6-speed manual AWD		 hills med none 0 0 90 10 80 5.1  
2001 2dr Coupe turbocharged 415hp 3.6L H6
5-speed shiftable automatic AWD		 flat light light 0 5 70 25 80 5.0  
2001 2dr Coupe 300-horsepower 3.4L H6
6-speed manual RWD		 flat med light 5 15 60 20 60 4.8  

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This page shows only averages. See all the Porsche 911 fuel economy data.

Pontiac G8 g/100m

Pontiac G8 Pontiac G8 2009 5.6 MPG Highway Percentage 61 percent Pontiac G8 Pontiac G8 2009 5.8 MPG Highway Percentage 68 percent Pontiac G8 Pontiac G8 2009 4.9 MPG Highway Percentage 30 percent Pontiac G8 Pontiac G8 2008 6.3 MPG Highway Percentage 52 percent Pontiac G8 Pontiac G8 2008 5.3 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 g/100m
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD		 hills lead light 10 14 16 61 75 5.6  
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat light light 3 21 9 68 63 5.8  
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med light 2 10 58 30 65 4.9  
2008 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat med none 10 21 16 52 75 6.3  
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med none 0 0 31 69 60 5.3  

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

Porsche 911 vs. Pontiac G8 Fuel Economy (g/100m)

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 Porsche 911 and Pontiac G8's where a car was driven. So you can get an idea of their real-world g/100m based on how and where you drive a car.

See TrueDelta's information for all Coupes and Convertibles.
See TrueDelta's information for all Porsche models and Pontiac models.

What Our Members Are Saying about the Real Gas Mileage of the Porsche 911

Porsche 911 Real Gas Mileage: Cons
YearBody/PowertrainComment
2001 2dr Coupe turbocharged 415hp 3.6L H6
5-speed shiftable automatic AWD		 20mpg avg isnt the best see full Porsche 911 review
 

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