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Cadillac STS vs. Buick Rainier Fuel Economy (g/100m)

Chart is based on 28 fuel economy reports for the Cadillac STS and 12 fuel economy reports for the Buick Rainier.

Cadillac STS g/100m

Cadillac STS Cadillac STS 2008 5.0 MPG Highway Percentage 90 percent Cadillac STS Cadillac STS 2008 4.6 MPG Highway Percentage 50 percent Cadillac STS Cadillac STS 2007 4.6 MPG Highway Percentage 28 percent Cadillac STS Cadillac STS 2006 4.1 MPG Highway Percentage 100 percent Cadillac STS Cadillac STS 2006 5.2 MPG Highway Percentage 60 percent Cadillac STS Cadillac STS 2006 5.3 MPG Highway Percentage 20 percent Cadillac STS Cadillac STS 2005 4.9 MPG Highway Percentage 53 percent Cadillac STS Cadillac STS 2005 23.5 MPG Highway Percentage 40 percent Cadillac STS Cadillac STS 2005 4.8 MPG Highway Percentage 45 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
2008 4dr Sedan 320-horsepower 4.6L V8
6-speed shiftable automatic AWD		 flat v.lt light 0 10 0 90 60 5.0  
2008 4dr Sedan 302-horsepower 3.6L V6
6-speed shiftable automatic RWD		 flat med light 9 11 30 50 73 4.6  
2007 4dr Sedan 320-horsepower 4.6L V8
6-speed shiftable automatic RWD		 flat med light 3 50 20 28 70 4.6  
2006 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 mtns light none 0 0 0 100 65 4.1  
2006 4dr Sedan 254-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med light 20 9 10 60 67 5.2  
2006 4dr Sedan 254-horsepower 3.6L V6
5-speed shiftable automatic AWD		 flat light none 0 45 35 20 60 5.3  
2005 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 flat med light 0 3 43 53 67 4.9  
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2005 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic AWD		 flat med light 10 45 5 40 70 23.5  
2005 4dr Sedan 255-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat light light 5 20 30 45 60 4.8  

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This page shows only averages. See all the Cadillac STS fuel economy data.

Buick Rainier g/100m

Buick Rainier Buick Rainier 2006 4.6 MPG Highway Percentage 100 percent Buick Rainier Buick Rainier 2005 4.5 MPG Highway Percentage 100 percent Buick Rainier Buick Rainier 2005 6.0 MPG Highway Percentage 10 percent Buick Rainier Buick Rainier 2004 6.1 MPG Highway Percentage 31 percent Buick Rainier Buick Rainier 2004 6.2 MPG Highway Percentage 43 percent Buick Rainier Buick Rainier 2004 5.5 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 g/100m
2006 4dr SUV 291-horsepower 4.2L I6
4-speed automatic RWD		 flat med hvy 0 0 0 100 80 4.6  
2005 4dr SUV 300-horsepower 5.3L V8
4-speed automatic AWD		 flat light light 0 0 0 100 60 4.5  
2005 4dr SUV 275-horsepower 4.2L I6
4-speed automatic RWD		 hills v.lt hvy 2 73 15 10 75 6.0  
2004 4dr SUV 290-horsepower 5.3L V8
4-speed automatic AWD		 flat med none 13 23 33 31 63 6.1  
2004 4dr SUV 275-horsepower 4.2L I6
4-speed automatic RWD		 flat light light 11 3 43 43 63 6.2  
2004 4dr SUV 275-horsepower 4.2L I6
4-speed automatic AWD		 flat light none 1 10 39 50 60 5.5  

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

Cadillac STS vs. Buick Rainier 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 Cadillac STS and Buick Rainier'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 Sedans
See TrueDelta's information for all Cadillac models and Buick models.

What Our Members Are Saying about the Real Gas Mileage of the Cadillac STS

Cadillac STS Real Gas Mileage: Cons
YearBody/PowertrainComment
2006 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 16 city/21 highway. Buy it only if you can afford it with out complaining. see full Cadillac STS review
2005 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic AWD		 This car is thirsty. I live in flat country and I get 15 mpg with 80% highway traffic. I only get 19 mpg on trips. It probably needs a 6th speed overdive for the highway. see full Cadillac STS 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