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BMW 7-Series vs. Mercedes-Benz SL Fuel Economy (km/L)

Chart is based on 156 fuel economy reports for the BMW 7-Series and 8 fuel economy reports for the Mercedes-Benz SL.

BMW 7-Series km/L

BMW 7-Series BMW 7-Series 2014 38.3 MPG Highway Percentage 0 percent BMW 7-Series BMW 7-Series 2010 32.9 MPG Highway Percentage 5 percent BMW 7-Series BMW 7-Series 2009 38.7 MPG Highway Percentage 80 percent BMW 7-Series BMW 7-Series 2008 44.7 MPG Highway Percentage 50 percent BMW 7-Series BMW 7-Series 2007 62.8 MPG Highway Percentage 80 percent BMW 7-Series BMW 7-Series 2006 50.6 MPG Highway Percentage 56 percent BMW 7-Series BMW 7-Series 2004 28.5 MPG Highway Percentage 10 percent BMW 7-Series BMW 7-Series 2003 48.9 MPG Highway Percentage 30 percent BMW 7-Series BMW 7-Series 2002 44.7 MPG Highway Percentage 20 percent BMW 7-Series BMW 7-Series 2001 48.8 MPG Highway Percentage 38 percent BMW 7-Series BMW 7-Series 2001 64.7 MPG Highway Percentage 75 percent BMW 7-Series BMW 7-Series 2000 37.0 MPG Highway Percentage 25 percent BMW 7-Series BMW 7-Series 2000 47.7 MPG Highway Percentage 85 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
2014 4dr Sedan, ext. turbocharged 315hp 3.0L I6
8-speed shiftable automatic AWD		 hills lead none 0 60 40 0 38.3  
2010 4dr Sedan turbocharged 400hp 4.4L V8
6-speed shiftable automatic RWD		 flat med hvy 10 10 75 5 80 32.9  
2009 4dr Sedan turbocharged 400hp 4.4L V8
6-speed shiftable automatic RWD		 flat med light 0 15 5 80 65 38.7  
2008 4dr Sedan 360-horsepower 4.8L V8
6-speed shiftable automatic RWD		 hills med light 20 10 20 50 75 44.7  
2007 4dr Sedan 360-horsepower 4.8L V8
6-speed shiftable automatic RWD		 flat light light 0 0 20 80 70 62.8  
2006 4dr Sedan 360-horsepower 4.8L V8
6-speed shiftable automatic RWD		 hills med hvy 6 26 12 56 72 50.6  
2004 4dr Sedan 325-horsepower 4.4L V8
6-speed shiftable automatic RWD		 hills med light 23 28 40 10 65 28.5  
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2003 4dr Sedan 325-horsepower 4.4L V8
6-speed shiftable automatic RWD		 flat light none 45 20 5 30 60 48.9  
2002 4dr Sedan 325-horsepower 4.4L V8
6-speed shiftable automatic RWD		 flat med light 0 50 30 20 75 44.7  
2001 4dr Sedan 282-horsepower 4.4L V8
5-speed shiftable automatic RWD		 hills med hvy 27 28 7 38 70 48.8  
2001 4dr Sedan 282-horsepower 4.4L V8
5-speed automatic RWD		 flat med light 10 10 5 75 75 64.7  
2000 4dr Sedan, ext. 326-horsepower 5.4L V12
5-speed shiftable automatic RWD		 hills med hvy 10 40 25 25 70 37.0  
2000 4dr Sedan 282-horsepower 4.4L V8
5-speed shiftable automatic RWD		 hills lead hvy 1 4 10 85 80 47.7  

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This page shows only averages. See all the BMW 7-Series fuel economy data.

Mercedes-Benz SL km/L

Mercedes-Benz SL Mercedes-Benz SL 2013 55.1 MPG Highway Percentage 48 percent Mercedes-Benz SL Mercedes-Benz SL 2007 49.4 MPG Highway Percentage 30 percent Mercedes-Benz SL Mercedes-Benz SL 2006 42.3 MPG Highway Percentage 5 percent Mercedes-Benz SL Mercedes-Benz SL 2000 44.8 MPG Highway Percentage 35 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
2013 2dr Hardtop conv. turbocharged 429hp 4.7L V8
7-speed shiftable automatic RWD		 flat light hvy 6 9 37 48 75 55.1  
2007 2dr Hardtop conv. 382-horsepower 5.5L V8
7-speed shiftable automatic RWD		 hills light none 10 10 50 30 70 49.4  
2006 2dr Hardtop conv. 302-horsepower 5.0L V8
7-speed shiftable automatic RWD		 flat med none 0 5 90 5 60 42.3  
2000 2dr Hardtop conv. 302-horsepower 5.0L V8
5-speed automatic RWD		 flat med none 15 20 30 35 60 44.8  

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

BMW 7-Series vs. Mercedes-Benz SL 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 BMW 7-Series and Mercedes-Benz SL'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 BMW models and Mercedes-Benz models.

What Our Members Are Saying about the Real Gas Mileage of the BMW 7-Series

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What Our Members Are Saying about the Real Gas Mileage of the Mercedes-Benz SL

Mercedes-Benz SL Real Gas Mileage: Pros
YearBody/PowertrainComment
2006 2dr Hardtop conv. supercharged 493hp 5.4L V8
5-speed shiftable automatic RWD		 Awful! Big V-8 gets approximately 14 mpg, if I'm lucky! see full Mercedes-Benz SL review
Mercedes-Benz SL Real Gas Mileage: Cons
YearBody/PowertrainComment
2002 2dr Hardtop conv. 302-horsepower 5.0L V8
5-speed automatic RWD		 Not great. I averaged about 16mpg in around town driving, about 22 on the freeways. Best mileage observed was in Wyoming, 24.5, coming downhill eastbound from the Grand Tetons. that said, people shouldn't buy this car expecting a Miata, in any way other than Two Doors and a Convertible Top. see full Mercedes-Benz SL review