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Pontiac G8 vs. Ford Flex Fuel Economy (km/L)

Chart is based on 201 fuel economy reports for the Pontiac G8 and 390 fuel economy reports for the Ford Flex.

Pontiac G8 km/L

Pontiac G8 Pontiac G8 2009 42.4 MPG Highway Percentage 61 percent Pontiac G8 Pontiac G8 2009 43.0 MPG Highway Percentage 68 percent Pontiac G8 Pontiac G8 2009 49.3 MPG Highway Percentage 30 percent Pontiac G8 Pontiac G8 2008 41.7 MPG Highway Percentage 52 percent Pontiac G8 Pontiac G8 2008 45.0 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 km/L
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD
hills lead light 10 14 16 61 75 42.4  
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD
flat light light 3 21 9 68 63 43.0  
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD
flat med light 2 10 58 30 65 49.3  
2008 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD
flat med none 10 21 16 52 75 41.7  
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD
flat med none 0 0 31 69 60 45.0  

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

Ford Flex km/L

Ford Flex Ford Flex 2014 7.6 MPG Highway Percentage 45 percent Ford Flex Ford Flex 2013 44.1 MPG Highway Percentage 60 percent Ford Flex Ford Flex 2013 43.8 MPG Highway Percentage 37 percent Ford Flex Ford Flex 2012 55.6 MPG Highway Percentage 59 percent Ford Flex Ford Flex 2011 33.0 MPG Highway Percentage 28 percent Ford Flex Ford Flex 2011 52.9 MPG Highway Percentage 25 percent Ford Flex Ford Flex 2011 41.9 MPG Highway Percentage 10 percent Ford Flex Ford Flex 2010 43.7 MPG Highway Percentage 61 percent Ford Flex Ford Flex 2010 51.2 MPG Highway Percentage 48 percent Ford Flex Ford Flex 2010 9.1 MPG Highway Percentage 67 percent Ford Flex Ford Flex 2009 50.6 MPG Highway Percentage 62 percent Ford Flex Ford Flex 2009 39.7 MPG Highway Percentage 22 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 km/L
2014 4dr SUV 287-horsepower 3.5L V6
6-speed shiftable automatic AWD
flat light none 0 55 0 45 110 7.6  
2013 4dr SUV turbocharged 365hp 3.5L V6
6-speed shiftable automatic AWD
flat med hvy 10 20 10 60 70 44.1  
2013 4dr SUV 287-horsepower 3.5L V6
6-speed shiftable automatic FWD
flat light hvy 5 0 58 37 75 43.8  
2012 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
flat med none 0 16 26 59 68 55.6  
2011 4dr SUV turbocharged 355hp 3.5L V6
6-speed shiftable automatic AWD
flat med light 47 10 15 28 80 33.0  
2011 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
flat light none 0 25 50 25 75 52.9  
2011 4dr SUV 262-horsepower 3.5L V6
6-speed automatic AWD
flat light none 10 60 20 10 60 41.9  
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2010 4dr SUV turbocharged 355hp 3.5L V6
6-speed shiftable automatic AWD
flat med none 6 10 23 61 73 43.7  
2010 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
flat light none 5 23 25 48 66 51.2  
2010 4dr SUV 262-horsepower 3.5L V6
6-speed automatic AWD
flat med none 0 33 0 67 100 9.1  
2009 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
flat light light 2 13 23 62 70 50.6  
2009 4dr SUV 262-horsepower 3.5L V6
6-speed automatic AWD
hills med light 4 36 38 22 68 39.7  

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This page shows only averages. See all the Ford Flex fuel economy data.

Pontiac G8 vs. Ford Flex Fuel Economy (km/L)

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 Ford Flex's where a car was driven. So you can get an idea of their real-world km/L based on how and where you drive a car.

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See TrueDelta's information for all Pontiac models and Ford 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 Ford Flex

Ford Flex Real Gas Mileage: Pros
YearBody/PowertrainComment
2010 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
I am currently averaging 20 MPG overall with heavy highway use. For the size of vehicle I think that is rather reasonable. see full Ford Flex review
2010 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
1000 miles of ownership so far, 21-22 mpg in light suburb and highway driving, 24-25 mpg on 500 mile trip (fuel economy measured by calculating miles driven divided by gallons of fuel purchased). see full Ford Flex review
2009 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
Only driven around town, mileage 16.6, have never had it on the open road. see full Ford Flex review
2009 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD
Very good for a 4500 lb vehicle. see full Ford Flex review