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Ford Flex vs. Buick Rainier MPG

Chart is based on 390 fuel economy reports for the Ford Flex and 12 fuel economy reports for the Buick Rainier.

Ford Flex MPG

Ford Flex Ford Flex 2014 17.9 MPG Highway Percentage 45 percent Ford Flex Ford Flex 2013 18.7 MPG Highway Percentage 60 percent Ford Flex Ford Flex 2013 18.6 MPG Highway Percentage 37 percent Ford Flex Ford Flex 2012 23.6 MPG Highway Percentage 59 percent Ford Flex Ford Flex 2011 18.3 MPG Highway Percentage 28 percent Ford Flex Ford Flex 2011 22.5 MPG Highway Percentage 25 percent Ford Flex Ford Flex 2011 17.8 MPG Highway Percentage 10 percent Ford Flex Ford Flex 2010 20.1 MPG Highway Percentage 61 percent Ford Flex Ford Flex 2010 21.7 MPG Highway Percentage 48 percent Ford Flex Ford Flex 2010 21.4 MPG Highway Percentage 67 percent Ford Flex Ford Flex 2009 22.9 MPG Highway Percentage 62 percent Ford Flex Ford Flex 2009 17.3 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 MPG
2014 4dr SUV 287-horsepower 3.5L V6
6-speed shiftable automatic AWD		 flat light none 0 55 0 45 110 17.9  
2013 4dr SUV turbocharged 365hp 3.5L V6
6-speed shiftable automatic AWD		 flat med hvy 10 20 10 60 70 18.7  
2013 4dr SUV 287-horsepower 3.5L V6
6-speed shiftable automatic FWD		 flat light hvy 5 0 58 37 75 18.6  
2012 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD		 flat med none 0 16 26 59 68 23.6  
2011 4dr SUV turbocharged 355hp 3.5L V6
6-speed shiftable automatic AWD		 flat med light 47 10 15 28 80 18.3  
2011 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD		 flat light none 0 25 50 25 75 22.5  
2011 4dr SUV 262-horsepower 3.5L V6
6-speed automatic AWD		 flat light none 10 60 20 10 60 17.8  
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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 20.1  
2010 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD		 flat light none 5 23 25 48 66 21.7  
2010 4dr SUV 262-horsepower 3.5L V6
6-speed automatic AWD		 flat med none 0 33 0 67 100 21.4  
2009 4dr SUV 262-horsepower 3.5L V6
6-speed automatic FWD		 flat light light 2 13 23 62 70 22.9  
2009 4dr SUV 262-horsepower 3.5L V6
6-speed automatic AWD		 hills med light 4 36 38 22 68 17.3  

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

Buick Rainier MPG

Buick Rainier Buick Rainier 2006 21.6 MPG Highway Percentage 100 percent Buick Rainier Buick Rainier 2005 22.0 MPG Highway Percentage 100 percent Buick Rainier Buick Rainier 2005 16.6 MPG Highway Percentage 10 percent Buick Rainier Buick Rainier 2004 16.6 MPG Highway Percentage 31 percent Buick Rainier Buick Rainier 2004 16.1 MPG Highway Percentage 43 percent Buick Rainier Buick Rainier 2004 18.1 MPG Highway Percentage 50 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
2006 4dr SUV 291-horsepower 4.2L I6
4-speed automatic RWD		 flat med hvy 0 0 0 100 80 21.6  
2005 4dr SUV 300-horsepower 5.3L V8
4-speed automatic AWD		 flat light light 0 0 0 100 60 22.0  
2005 4dr SUV 275-horsepower 4.2L I6
4-speed automatic RWD		 hills v.lt hvy 2 73 15 10 75 16.6  
2004 4dr SUV 290-horsepower 5.3L V8
4-speed automatic AWD		 flat med none 13 23 33 31 63 16.6  
2004 4dr SUV 275-horsepower 4.2L I6
4-speed automatic RWD		 flat light light 11 3 43 43 63 16.1  
2004 4dr SUV 275-horsepower 4.2L I6
4-speed automatic AWD		 flat light none 1 10 39 50 60 18.1  

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This page shows only averages. See all the Buick Rainier fuel economy data.

Ford Flex vs. Buick Rainier 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 Ford Flex and Buick Rainier'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.

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See TrueDelta's information for all Ford models and Buick models.

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
 

What Our Members Are Saying about the Real Gas Mileage of the Buick Rainier

Buick Rainier Real Gas Mileage: Cons
YearBody/PowertrainComment
2005 4dr SUV 300-horsepower 5.3L V8
4-speed automatic AWD		 12 mpg see full Buick Rainier review
2004 4dr SUV 290-horsepower 5.3L V8
4-speed automatic AWD		 An AWD V8 body on frame SUV/truck like the Rainier will be a gas pig. Mid to high teens are all you should expect. The benefit of poor gas mileage is strong towing performance. see full Buick Rainier review