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Mercedes-Benz SLK vs. Porsche 911 Fuel Economy (g/100m)

Chart is based on 18 fuel economy reports for the Mercedes-Benz SLK and 56 fuel economy reports for the Porsche 911.

Mercedes-Benz SLK g/100m

Mercedes-Benz SLK Mercedes-Benz SLK 2009 25.4 MPG Highway Percentage 70 percent Mercedes-Benz SLK Mercedes-Benz SLK 2009 4.8 MPG Highway Percentage 50 percent Mercedes-Benz SLK Mercedes-Benz SLK 2008 3.9 MPG Highway Percentage 80 percent Mercedes-Benz SLK Mercedes-Benz SLK 2007 15.7 MPG Highway Percentage 68 percent Mercedes-Benz SLK Mercedes-Benz SLK 2006 4.3 MPG Highway Percentage 85 percent Mercedes-Benz SLK Mercedes-Benz SLK 2006 4.1 MPG Highway Percentage 60 percent Mercedes-Benz SLK Mercedes-Benz SLK 2005 4.5 MPG Highway Percentage 53 percent Mercedes-Benz SLK Mercedes-Benz SLK 2005 4.2 MPG Highway Percentage 90 percent Mercedes-Benz SLK Mercedes-Benz SLK 2003 3.8 MPG Highway Percentage 79 percent Mercedes-Benz SLK Mercedes-Benz SLK 2001 4.0 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
2009 2dr Hardtop conv. 355-horsepower 5.4L V8
7-speed shiftable automatic RWD		 flat med light 0 10 20 70 100 25.4  
2009 2dr Hardtop conv. 300-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat med hvy 0 5 45 50 65 4.8  
2008 2dr Hardtop conv. 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 mtns lead light 5 5 10 80 75 3.9  
2007 2dr Hardtop conv. 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat med none 13 13 8 68 95 15.7  
2006 2dr Hardtop conv. 355-horsepower 5.4L V8
7-speed shiftable automatic RWD		 flat light light 2 10 3 85 70 4.3  
2006 2dr Hardtop conv. 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat med hvy 10 10 20 60 70 4.1  
2005 2dr Hardtop conv. 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat med light 10 25 12 53 66 4.5  
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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 4.2  
2003 2dr Hardtop conv. supercharged 192hp 2.3L I4
5-speed shiftable automatic RWD		 flat med light 0 5 16 79 72 3.8  
2001 2dr Hardtop conv. 215-horsepower 3.2L V6
5-speed shiftable automatic RWD		 flat med light 1 15 35 50 63 4.0  

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

Porsche 911 g/100m

Porsche 911 Porsche 911 2009 5.3 MPG Highway Percentage 30 percent Porsche 911 Porsche 911 2009 4.7 MPG Highway Percentage 78 percent Porsche 911 Porsche 911 2009 3.7 MPG Highway Percentage 90 percent Porsche 911 Porsche 911 2009 4.3 MPG Highway Percentage 25 percent Porsche 911 Porsche 911 2009 5.1 MPG Highway Percentage 50 percent Porsche 911 Porsche 911 2008 5.0 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2007 4.3 MPG Highway Percentage 30 percent Porsche 911 Porsche 911 2007 4.5 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2007 4.2 MPG Highway Percentage 85 percent Porsche 911 Porsche 911 2006 5.6 MPG Highway Percentage 34 percent Porsche 911 Porsche 911 2006 4.7 MPG Highway Percentage 80 percent Porsche 911 Porsche 911 2006 5.6 MPG Highway Percentage 35 percent Porsche 911 Porsche 911 2006 5.1 MPG Highway Percentage 66 percent Porsche 911 Porsche 911 2005 4.9 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2005 4.8 MPG Highway Percentage 23 percent Porsche 911 Porsche 911 2005 5.2 MPG Highway Percentage 70 percent Porsche 911 Porsche 911 2004 5.6 MPG Highway Percentage 25 percent Porsche 911 Porsche 911 2003 5.6 MPG Highway Percentage 50 percent Porsche 911 Porsche 911 2002 7.7 MPG Highway Percentage 70 percent Porsche 911 Porsche 911 2002 5.0 MPG Highway Percentage 30 percent Porsche 911 Porsche 911 2002 4.5 MPG Highway Percentage 40 percent Porsche 911 Porsche 911 2002 5.1 MPG Highway Percentage 10 percent Porsche 911 Porsche 911 2001 5.0 MPG Highway Percentage 25 percent Porsche 911 Porsche 911 2001 4.8 MPG Highway Percentage 20 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
2009 2dr Coupe 385-horsepower 3.8L H6
7-speed automated manual RWD		 flat med hvy 2 38 30 30 80 5.3  
2009 2dr Coupe 385-horsepower 3.8L H6
6-speed manual RWD		 flat lead light 1 1 20 78 75 4.7  
2009 2dr Coupe 345-horsepower 3.6L H6
7-speed automated manual RWD		 flat light none 0 10 0 90 75 3.7  
2009 2dr Coupe 345-horsepower 3.6L H6
6-speed manual RWD		 flat v.lt none 5 20 50 25 70 4.3  
2009 2dr Convertible 385-horsepower 3.8L H6
6-speed manual RWD		 flat med light 0 0 50 50 75 5.1  
2008 2dr Coupe 355-horsepower 3.8L H6
5-speed shiftable automatic RWD		 flat med hvy 10 50 0 40 75 5.0  
2007 2dr Coupe turbocharged 480hp 3.6L H6
6-speed manual AWD		 mtns lead hvy 5 25 40 30 70 4.3  
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2007 2dr Coupe 355-horsepower 3.8L H6
6-speed manual RWD		 flat med light 0 30 30 40 70 4.5  
2007 2dr Coupe 325-horsepower 3.6L H6
5-speed shiftable automatic RWD		 flat lead hvy 5 0 10 85 75 4.2  
2006 2dr Coupe 355-horsepower 3.8L H6
6-speed manual RWD		 flat med light 5 32 29 34 65 5.6  
2006 2dr Coupe 325-horsepower 3.6L H6
6-speed manual RWD		 flat med hvy 10 0 10 80 60 4.7  
2006 2dr Convertible 355-horsepower 3.8L H6
6-speed manual RWD		 flat med light 0 5 60 35 75 5.6  
2006 2dr Convertible 355-horsepower 3.8L H6
6-speed manual AWD		 flat med none 5 9 20 66 76 5.1  
2005 2dr Coupe 355-horsepower 3.8L H6
6-speed manual RWD		 hills lead light 0 10 50 40 85 4.9  
2005 2dr Coupe 325-horsepower 3.6L H6
5-speed shiftable automatic RWD		 flat med light 7 13 57 23 60 4.8  
2005 2dr Convertible 325-horsepower 3.6L H6
6-speed manual RWD		 flat med light 0 10 20 70 60 5.2  
2004 2dr Coupe 345-horsepower 3.6L H6
6-speed manual RWD		 flat med none 5 40 30 25 70 5.6  
2003 2dr Coupe turbocharged 450hp 3.6L H6
6-speed manual AWD		 mtns med light 2 3 45 50 90 5.6  
2002 2dr Coupe turbocharged 450hp 3.6L H6
6-speed manual AWD		 flat med none 5 15 10 70 60 7.7  
2002 2dr Coupe turbocharged 450hp 3.6L H6
5-speed shiftable automatic AWD		 flat med hvy 35 35 0 30 70 5.0  
2002 2dr Coupe 320-horsepower 3.6L H6
6-speed manual RWD		 flat v.lt none 10 20 30 40 65 4.5  
2002 2dr Convertible 320-horsepower 3.6L H6
6-speed manual AWD		 hills med none 0 0 90 10 80 5.1  
2001 2dr Coupe turbocharged 415hp 3.6L H6
5-speed shiftable automatic AWD		 flat light light 0 5 70 25 80 5.0  
2001 2dr Coupe 300-horsepower 3.4L H6
6-speed manual RWD		 flat med light 5 15 60 20 60 4.8  

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This page shows only averages. See all the Porsche 911 fuel economy data.

Mercedes-Benz SLK vs. Porsche 911 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 Mercedes-Benz SLK and Porsche 911'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 Convertibles
See TrueDelta's information for all Mercedes-Benz models and Porsche models.

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
 

What Our Members Are Saying about the Real Gas Mileage of the Porsche 911

Porsche 911 Real Gas Mileage: Cons
YearBody/PowertrainComment
2001 2dr Coupe turbocharged 415hp 3.6L H6
5-speed shiftable automatic AWD		 20mpg avg isnt the best see full Porsche 911 review