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Buick Lucerne vs. Cadillac STS MPG

Chart is based on 21 fuel economy reports for the Buick Lucerne and 28 fuel economy reports for the Cadillac STS.

Buick Lucerne MPG

Buick Lucerne Buick Lucerne 2009 27.4 MPG Highway Percentage 100 percent Buick Lucerne Buick Lucerne 2008 21.1 MPG Highway Percentage 75 percent Buick Lucerne Buick Lucerne 2007 22.6 MPG Highway Percentage 48 percent Buick Lucerne Buick Lucerne 2007 28.7 MPG Highway Percentage 82 percent Buick Lucerne Buick Lucerne 2006 27.0 MPG Highway Percentage 25 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 227-horsepower 3.9L V6
4-speed automatic FWD		 flat med none 0 0 0 100 120 27.4  
2008 4dr Sedan 197-horsepower 3.8L V6
4-speed automatic FWD		 flat light light 2 3 20 75 70 21.1  
2007 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 hills light none 6 13 33 48 61 22.6  
2007 4dr Sedan 197-horsepower 3.8L V6
4-speed automatic FWD		 flat med hvy 0 5 14 82 80 28.7  
2006 4dr Sedan 197-horsepower 3.8L V6
4-speed automatic FWD		 flat light hvy 0 25 50 25 60 27.0  

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

Cadillac STS MPG

Cadillac STS Cadillac STS 2008 20.1 MPG Highway Percentage 90 percent Cadillac STS Cadillac STS 2008 21.8 MPG Highway Percentage 50 percent Cadillac STS Cadillac STS 2007 22.0 MPG Highway Percentage 28 percent Cadillac STS Cadillac STS 2006 24.5 MPG Highway Percentage 100 percent Cadillac STS Cadillac STS 2006 20.0 MPG Highway Percentage 60 percent Cadillac STS Cadillac STS 2006 19.0 MPG Highway Percentage 20 percent Cadillac STS Cadillac STS 2005 20.5 MPG Highway Percentage 53 percent Cadillac STS Cadillac STS 2005 14.6 MPG Highway Percentage 40 percent Cadillac STS Cadillac STS 2005 21.0 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 MPG
2008 4dr Sedan 320-horsepower 4.6L V8
6-speed shiftable automatic AWD		 flat v.lt light 0 10 0 90 60 20.1  
2008 4dr Sedan 302-horsepower 3.6L V6
6-speed shiftable automatic RWD		 flat med light 9 11 30 50 73 21.8  
2007 4dr Sedan 320-horsepower 4.6L V8
6-speed shiftable automatic RWD		 flat med light 3 50 20 28 70 22.0  
2006 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 mtns light none 0 0 0 100 65 24.5  
2006 4dr Sedan 254-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med light 20 9 10 60 67 20.0  
2006 4dr Sedan 254-horsepower 3.6L V6
5-speed shiftable automatic AWD		 flat light none 0 45 35 20 60 19.0  
2005 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 flat med light 0 3 43 53 67 20.5  
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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 14.6  
2005 4dr Sedan 255-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat light light 5 20 30 45 60 21.0  

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

Buick Lucerne vs. Cadillac STS 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 Buick Lucerne and Cadillac STS'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 Buick models and Cadillac models.

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

Buick Lucerne Real Gas Mileage: Cons
YearBody/PowertrainComment
2008 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 not as good as the mercyrey see full Buick Lucerne review
2007 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 I average 20.6 in and out of town. Not bad for a car this big and powerfuil but who would not like more? see full Buick Lucerne review
 

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