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Cadillac STS vs. Mercedes-Benz SLK Fuel Economy (km/L)

Chart is based on 28 fuel economy reports for the Cadillac STS and 18 fuel economy reports for the Mercedes-Benz SLK.

Cadillac STS km/L

Cadillac STS Cadillac STS 2008 47.2 MPG Highway Percentage 90 percent Cadillac STS Cadillac STS 2008 51.1 MPG Highway Percentage 50 percent Cadillac STS Cadillac STS 2007 51.8 MPG Highway Percentage 28 percent Cadillac STS Cadillac STS 2006 57.6 MPG Highway Percentage 100 percent Cadillac STS Cadillac STS 2006 47.1 MPG Highway Percentage 60 percent Cadillac STS Cadillac STS 2006 44.7 MPG Highway Percentage 20 percent Cadillac STS Cadillac STS 2005 48.3 MPG Highway Percentage 53 percent Cadillac STS Cadillac STS 2005 21.0 MPG Highway Percentage 40 percent Cadillac STS Cadillac STS 2005 49.4 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 km/L
2008 4dr Sedan 320-horsepower 4.6L V8
6-speed shiftable automatic AWD		 flat v.lt light 0 10 0 90 60 47.2  
2008 4dr Sedan 302-horsepower 3.6L V6
6-speed shiftable automatic RWD		 flat med light 9 11 30 50 73 51.1  
2007 4dr Sedan 320-horsepower 4.6L V8
6-speed shiftable automatic RWD		 flat med light 3 50 20 28 70 51.8  
2006 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 mtns light none 0 0 0 100 65 57.6  
2006 4dr Sedan 254-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med light 20 9 10 60 67 47.1  
2006 4dr Sedan 254-horsepower 3.6L V6
5-speed shiftable automatic AWD		 flat light none 0 45 35 20 60 44.7  
2005 4dr Sedan 320-horsepower 4.6L V8
5-speed shiftable automatic RWD		 flat med light 0 3 43 53 67 48.3  
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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 21.0  
2005 4dr Sedan 255-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat light light 5 20 30 45 60 49.4  

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

Mercedes-Benz SLK km/L

Mercedes-Benz SLK Mercedes-Benz SLK 2009 9.3 MPG Highway Percentage 70 percent Mercedes-Benz SLK Mercedes-Benz SLK 2009 49.4 MPG Highway Percentage 50 percent Mercedes-Benz SLK Mercedes-Benz SLK 2008 59.9 MPG Highway Percentage 80 percent Mercedes-Benz SLK Mercedes-Benz SLK 2007 41.4 MPG Highway Percentage 68 percent Mercedes-Benz SLK Mercedes-Benz SLK 2006 55.0 MPG Highway Percentage 85 percent Mercedes-Benz SLK Mercedes-Benz SLK 2006 58.0 MPG Highway Percentage 60 percent Mercedes-Benz SLK Mercedes-Benz SLK 2005 54.6 MPG Highway Percentage 53 percent Mercedes-Benz SLK Mercedes-Benz SLK 2005 56.5 MPG Highway Percentage 90 percent Mercedes-Benz SLK Mercedes-Benz SLK 2003 61.7 MPG Highway Percentage 79 percent Mercedes-Benz SLK Mercedes-Benz SLK 2001 59.6 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 km/L
2009 2dr Hardtop conv. 355-horsepower 5.4L V8
7-speed shiftable automatic RWD		 flat med light 0 10 20 70 100 9.3  
2009 2dr Hardtop conv. 300-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat med hvy 0 5 45 50 65 49.4  
2008 2dr Hardtop conv. 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 mtns lead light 5 5 10 80 75 59.9  
2007 2dr Hardtop conv. 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat med none 13 13 8 68 95 41.4  
2006 2dr Hardtop conv. 355-horsepower 5.4L V8
7-speed shiftable automatic RWD		 flat light light 2 10 3 85 70 55.0  
2006 2dr Hardtop conv. 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat med hvy 10 10 20 60 70 58.0  
2005 2dr Hardtop conv. 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat med light 10 25 12 53 66 54.6  
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2005 2dr Hardtop conv. 268-horsepower 3.5L V6
6-speed manual RWD		 flat lead none 0 0 10 90 75 56.5  
2003 2dr Hardtop conv. supercharged 192hp 2.3L I4
5-speed shiftable automatic RWD		 flat med light 0 5 16 79 72 61.7  
2001 2dr Hardtop conv. 215-horsepower 3.2L V6
5-speed shiftable automatic RWD		 flat med light 1 15 35 50 63 59.6  

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This page shows only averages. See all the Mercedes-Benz SLK fuel economy data.

Cadillac STS vs. Mercedes-Benz SLK 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 Cadillac STS and Mercedes-Benz SLK'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.

See TrueDelta's information for all Sedans
See TrueDelta's information for all Cadillac models and Mercedes-Benz 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 Mercedes-Benz SLK

Mercedes-Benz SLK Real Gas Mileage: Cons
YearBody/PowertrainComment
2005 2dr Hardtop conv. 355-horsepower 5.4L V8
7-speed shiftable automatic RWD		 clearly AMG was not thinking gas mileage at all when they built this engine see full Mercedes-Benz SLK review