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Mercedes-Benz C-Class vs. Audi A6 / S6 / RS6 Fuel Economy (km/L)

Chart is based on 204 fuel economy reports for the Mercedes-Benz C-Class and 229 fuel economy reports for the Audi A6 / S6 / RS6.

Mercedes-Benz C-Class km/L

Mercedes-Benz C-Class Mercedes-Benz C-Class 2018 66.6 MPG Highway Percentage 70 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2017 13.8 MPG Highway Percentage 90 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2016 11.7 MPG Highway Percentage 54 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2015 54.8 MPG Highway Percentage 20 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2014 53.7 MPG Highway Percentage 48 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2013 54.4 MPG Highway Percentage 35 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2012 81.7 MPG Highway Percentage 90 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2012 67.0 MPG Highway Percentage 80 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2011 132.8 MPG Highway Percentage 75 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2011 56.7 MPG Highway Percentage 50 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2011 66.2 MPG Highway Percentage 40 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2010 7.0 MPG Highway Percentage 32 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2010 51.7 MPG Highway Percentage 35 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2010 33.4 MPG Highway Percentage 47 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2009 12.5 MPG Highway Percentage 0 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2009 11.1 MPG Highway Percentage 18 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2009 7.7 MPG Highway Percentage 40 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2009 52.1 MPG Highway Percentage 33 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2009 61.6 MPG Highway Percentage 76 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 10.5 MPG Highway Percentage 40 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 10.5 MPG Highway Percentage 60 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 51.4 MPG Highway Percentage 42 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 9.4 MPG Highway Percentage 60 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 52.3 MPG Highway Percentage 42 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 51.8 MPG Highway Percentage 37 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 52.8 MPG Highway Percentage 59 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2008 10.0 MPG Highway Percentage 30 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2007 50.4 MPG Highway Percentage 65 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2007 58.8 MPG Highway Percentage 28 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2007 56.6 MPG Highway Percentage 58 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2007 60.4 MPG Highway Percentage 60 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2006 46.3 MPG Highway Percentage 50 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2006 48.7 MPG Highway Percentage 10 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2006 69.2 MPG Highway Percentage 70 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2006 42.3 MPG Highway Percentage 43 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2006 57.5 MPG Highway Percentage 28 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2006 60.2 MPG Highway Percentage 40 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2005 68.6 MPG Highway Percentage 36 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2005 63.4 MPG Highway Percentage 52 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2005 42.3 MPG Highway Percentage 20 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2005 42.3 MPG Highway Percentage 10 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2005 29.8 MPG Highway Percentage 55 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2004.5 51.7 MPG Highway Percentage 50 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2004 11.9 MPG Highway Percentage 14 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2004 42.3 MPG Highway Percentage 15 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2004 69.6 MPG Highway Percentage 62 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2004 64.2 MPG Highway Percentage 50 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 44.0 MPG Highway Percentage 30 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 83.0 MPG Highway Percentage 50 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 23.9 MPG Highway Percentage 40 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 67.4 MPG Highway Percentage 80 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 56.5 MPG Highway Percentage 60 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 39.0 MPG Highway Percentage 65 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2003 13.4 MPG Highway Percentage 75 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2002 54.1 MPG Highway Percentage 15 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2002 47.0 MPG Highway Percentage 10 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2002 49.4 MPG Highway Percentage 16 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2002 22.9 MPG Highway Percentage 20 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2002 46.8 MPG Highway Percentage 48 percent Mercedes-Benz C-Class Mercedes-Benz C-Class 2001 9.9 MPG Highway Percentage 27 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
2018 2dr Convertible turbocharged 241hp 2.0L I4
9-speed shiftable automatic RWD		 flat med light 0 5 25 70 75 66.6  
2017 4dr Sedan turbocharged 241hp 2.0L I4
7-speed shiftable automatic RWD		 flat v.lt hvy 1 4 5 90 130 13.8  
2016 4dr Sedan turbocharged 241hp 2.0L I4
7-speed shiftable automatic AWD		 flat v.lt light 0 0 46 54 106 11.7  
2015 4dr Sedan turbocharged 241hp 2.0L I4
7-speed shiftable automatic AWD		 flat med hvy 5 70 5 20 65 54.8  
2014 4dr Sedan 248-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat v.lt hvy 14 29 8 48 64 53.7  
2013 4dr Sedan turbocharged 201hp 1.8L I4
7-speed shiftable automatic RWD		 flat med light 10 10 45 35 75 54.4  
2012 2dr Coupe turbocharged 201hp 1.8L I4
7-speed shiftable automatic RWD		 flat v.lt none 0 5 5 90 60 81.7  
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2012 2dr Coupe 302-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat med light 10 2 8 80 75 67.0  
2011 4dr Sedan turbocharged 134hp 2.1L I4 Diesel
7-speed shiftable automatic RWD		 flat light none 0 5 20 75 60 132.8  
2011 4dr Sedan 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 hills light none 10 0 40 50 75 56.7  
2011 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic AWD		 hills light light 0 5 55 40 70 66.2  
2010 4dr Sedan 451-horsepower 6.2L V8
7-speed shiftable automatic RWD		 flat med none 40 19 8 32 80 7.0  
2010 4dr Sedan 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat light hvy 40 0 25 35 70 51.7  
2010 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic AWD		 flat med light 0 18 35 47 77 33.4  
2009 4dr Sedan turbocharged 168hp 2.1L I4 Diesel
6-speed manual RWD		 flat med light 60 20 20 0 0 12.5  
2009 4dr Sedan supercharged 181hp 1.8L I4
5-speed shiftable automatic RWD		 hills light none 20 38 25 18 95 11.1  
2009 4dr Sedan 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 mtns lead light 5 40 15 40 180 7.7  
2009 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat light light 23 26 18 33 68 52.1  
2009 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic AWD		 flat light none 15 3 6 76 67 61.6  
2008 4dr Sedan supercharged 181hp 1.8L I4
5-speed shiftable automatic RWD		 hills med light 10 20 30 40 110 10.5  
2008 4dr Sedan supercharged 154hp 1.8L I4
5-speed shiftable automatic RWD		 flat light light 12 16 12 60 100 10.5  
2008 4dr Sedan 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 flat med hvy 13 28 18 42 68 51.4  
2008 4dr Sedan 268-horsepower 3.5L V6
7-speed shiftable automatic AWD		 flat med hvy 10 20 10 60 120 9.4  
2008 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat med light 12 25 21 42 68 52.3  
2008 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic AWD		 flat light light 6 10 47 37 68 51.8  
2008 4dr Sedan 228-horsepower 3.0L V6
6-speed manual RWD		 hills light light 7 20 14 59 77 52.8  
2008 4dr Sedan 201-horsepower 2.5L V6
7-speed shiftable automatic AWD		 flat light none 10 40 20 30 100 10.0  
2007 4dr Sedan 268-horsepower 3.5L V6
6-speed manual RWD		 flat med none 0 0 35 65 68 50.4  
2007 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 flat med hvy 1 12 59 28 63 58.8  
2007 4dr Sedan 228-horsepower 3.0L V6
5-speed shiftable automatic AWD		 hills med none 15 13 15 58 73 56.6  
2007 4dr Sedan 201-horsepower 2.5L V6
7-speed shiftable automatic RWD		 hills med hvy 30 5 5 60 60 60.4  
2006 4dr Sedan 362-horsepower 5.4L V8
5-speed shiftable automatic RWD		 flat med none 30 0 20 50 70 46.3  
2006 4dr Sedan 268-horsepower 3.5L V6
5-speed shiftable automatic AWD		 flat lead hvy 5 5 80 10 60 48.7  
2006 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 hills lead none 0 25 5 70 63 69.2  
2006 4dr Sedan 228-horsepower 3.0L V6
5-speed shiftable automatic AWD		 hills light light 0 57 0 43 60 42.3  
2006 4dr Sedan 201-horsepower 2.5L V6
7-speed shiftable automatic RWD		 flat light hvy 13 27 33 28 65 57.5  
2006 4dr Sedan 201-horsepower 2.5L V6
6-speed manual RWD		 flat med hvy 3 27 30 40 73 60.2  
2005 4dr Sedan supercharged 189hp 1.8L I4
6-speed manual RWD		 flat light light 10 36 18 36 66 68.6  
2005 4dr Sedan supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 flat med light 7 18 23 52 69 63.4  
2005 4dr Sedan 362-horsepower 5.4L V8
5-speed shiftable automatic RWD		 flat med none 0 70 10 20 80 42.3  
2005 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic AWD		 flat med none 10 55 25 10 60 42.3  
2005 2dr Hatch supercharged 189hp 1.8L I4
6-speed manual RWD		 flat lead hvy 0 38 8 55 93 29.8  
2004.5 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic RWD		 hills lead hvy 10 10 30 50 75 51.7  
2004 4dr Wagon 215-horsepower 3.2L V6
5-speed shiftable automatic RWD		 hills med light 10 19 58 14 100 11.9  
2004 4dr Wagon 168-horsepower 2.6L V6
5-speed shiftable automatic AWD		 hills med light 0 65 20 15 60 42.3  
2004 4dr Sedan supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 hills med light 9 7 22 62 76 69.6  
2004 2dr Hatch supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 flat light none 20 10 20 50 65 64.2  
2003 4dr Wagon 168-horsepower 2.6L V6
5-speed shiftable automatic AWD		 flat med none 22 23 24 30 65 44.0  
2003 4dr Sedan supercharged 189hp 1.8L I4
6-speed manual RWD		 flat med light 1 4 46 50 73 83.0  
2003 4dr Sedan supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 flat med light 18 28 13 40 107 23.9  
2003 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic RWD		 hills med hvy 0 3 17 80 72 67.4  
2003 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic AWD		 flat med none 10 15 15 60 70 56.5  
2003 2dr Hatch supercharged 189hp 1.8L I4
6-speed manual RWD		 flat light none 3 4 27 65 83 39.0  
2003 2dr Hatch supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 mtns med hvy 3 5 18 75 130 13.4  
2002 4dr Wagon 215-horsepower 3.2L V6
5-speed shiftable automatic RWD		 flat med hvy 5 15 65 15 65 54.1  
2002 4dr Sedan 215-horsepower 3.2L V6
5-speed shiftable automatic RWD		 flat med light 20 60 10 10 60 47.0  
2002 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic RWD		 flat med none 30 30 25 16 60 49.4  
2002 2dr Hatch supercharged 192hp 2.3L I4
6-speed manual RWD		 flat med none 10 53 17 20 130 22.9  
2002 2dr Hatch supercharged 192hp 2.3L I4
5-speed shiftable automatic RWD		 hills med hvy 12 12 30 48 73 46.8  
2001 4dr Sedan 215-horsepower 3.2L V6
5-speed shiftable automatic RWD		 flat med light 27 5 41 27 130 9.9  

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

Audi A6 / S6 / RS6 km/L

Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2018 70.6 MPG Highway Percentage 55 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2016 73.8 MPG Highway Percentage 85 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2014 62.8 MPG Highway Percentage 40 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2013 40.8 MPG Highway Percentage 0 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2013 52.9 MPG Highway Percentage 65 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2012 75.3 MPG Highway Percentage 90 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2011 56.0 MPG Highway Percentage 15 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2010 58.8 MPG Highway Percentage 30 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2010 37.9 MPG Highway Percentage 65 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2008 47.1 MPG Highway Percentage 40 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2007 47.5 MPG Highway Percentage 49 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2007 28.5 MPG Highway Percentage 15 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2007 48.2 MPG Highway Percentage 65 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2007 58.6 MPG Highway Percentage 55 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2006.5 141.2 MPG Highway Percentage 95 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2006 46.4 MPG Highway Percentage 44 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2006 43.7 MPG Highway Percentage 63 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2006 67.3 MPG Highway Percentage 30 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2006 52.4 MPG Highway Percentage 62 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2005 40.7 MPG Highway Percentage 67 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2005 46.9 MPG Highway Percentage 54 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2004 42.6 MPG Highway Percentage 25 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2004 41.6 MPG Highway Percentage 54 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2004 47.6 MPG Highway Percentage 95 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2003 37.6 MPG Highway Percentage 30 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2003 47.9 MPG Highway Percentage 72 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2003 51.7 MPG Highway Percentage 50 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2003 51.8 MPG Highway Percentage 76 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2003 27.7 MPG Highway Percentage 65 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2003 22.2 MPG Highway Percentage 40 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2002 50.1 MPG Highway Percentage 60 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2002 37.8 MPG Highway Percentage 44 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2002 44.6 MPG Highway Percentage 43 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2002 45.7 MPG Highway Percentage 45 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2002 56.5 MPG Highway Percentage 40 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2002 43.9 MPG Highway Percentage 10 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2001 50.5 MPG Highway Percentage 8 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2001 48.8 MPG Highway Percentage 55 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2001 49.9 MPG Highway Percentage 33 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2000 47.0 MPG Highway Percentage 50 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2000 8.8 MPG Highway Percentage 60 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2000 38.8 MPG Highway Percentage 30 percent Audi A6 / S6 / RS6 Audi A6 / S6 / RS6 2000 49.4 MPG Highway Percentage 33 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
2018 4dr Sedan supercharged 340hp 3.0L V6
8-speed shiftable automatic AWD		 flat med hvy 5 5 35 55 65 70.6  
2016 4dr Sedan supercharged 333hp 3.0L V6
8-speed shiftable automatic AWD		 flat med none 0 10 5 85 80 73.8  
2014 4dr Sedan supercharged 310hp 3.0L V6
8-speed shiftable automatic AWD		 flat med hvy 0 10 50 40 80 62.8  
2013 4dr Sedan turbocharged 420hp 4.0L V8
7-speed automated manual AWD		 flat med light 0 100 0 0 0 40.8  
2013 4dr Sedan supercharged 310hp 3.0L V6
8-speed shiftable automatic AWD		 hills lead none 0 10 25 65 70 52.9  
2012 4dr Sedan supercharged 310hp 3.0L V6
8-speed shiftable automatic AWD		 flat med none 10 0 0 90 65 75.3  
2011 4dr Sedan supercharged 300hp 3.0L V6
6-speed shiftable automatic AWD		 flat med hvy 30 45 10 15 70 56.0  
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2010 4dr Wagon supercharged 300hp 3.0L V6
6-speed shiftable automatic AWD		 flat med light 10 20 40 30 75 58.8  
2010 4dr Sedan supercharged 300hp 3.0L V6
6-speed shiftable automatic AWD		 flat med light 9 6 20 65 88 37.9  
2008 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 flat med none 15 20 25 40 65 47.1  
2007 4dr Wagon 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 flat med light 0 11 40 49 75 47.5  
2007 4dr Sedan 435-horsepower 5.2L V10
6-speed shiftable automatic AWD		 flat med light 30 50 5 15 70 28.5  
2007 4dr Sedan 350-horsepower 4.2L V8
6-speed shiftable automatic AWD		 flat med light 10 5 20 65 70 48.2  
2007 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 hills light light 3 10 34 55 63 58.6  
2006.5 4dr Sedan turbocharged 140hp 2.0L I4 Diesel
6-speed manual FWD		 flat v.lt none 5 0 0 95 60 141.2  
2006 4dr Wagon 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 flat med light 16 17 22 44 78 46.4  
2006 4dr Sedan 335-horsepower 4.2L V8
6-speed shiftable automatic AWD		 flat med none 1 2 34 63 82 43.7  
2006 4dr Sedan 255-horsepower 3.1L V6
7-speed shiftable CVT FWD		 flat med hvy 30 20 20 30 80 67.3  
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 flat med light 8 14 16 62 77 52.4  
2005 4dr Sedan 335-horsepower 4.2L V8
6-speed shiftable automatic AWD		 flat med light 1 4 28 67 77 40.7  
2005 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 flat med light 11 13 23 54 81 46.9  
2004 4dr Sedan 300-horsepower 4.2L V8
5-speed shiftable automatic AWD		 flat med none 25 25 25 25 75 42.6  
2004 4dr Sedan 265-horsepower 2.7L V6
5-speed shiftable automatic AWD		 flat med light 4 25 17 54 70 41.6  
2004 4dr Sedan 220-horsepower 3.0L V6
5-speed shiftable automatic AWD		 flat med none 5 0 0 95 68 47.6  
2003 4dr Wagon 340-horsepower 4.2L V8
5-speed shiftable automatic AWD		 flat lead hvy 20 20 30 30 80 37.6  
2003 4dr Sedan turbocharged 450hp 4.2L V8
5-speed shiftable automatic AWD		 flat med light 2 5 22 72 75 47.9  
2003 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD		 flat med none 0 20 30 50 75 51.7  
2003 4dr Sedan turbocharged 250hp 2.7L V6
5-speed shiftable automatic AWD		 flat light light 5 7 12 76 70 51.8  
2003 4dr Sedan 300-horsepower 4.2L V8
5-speed shiftable automatic AWD		 hills med light 13 8 15 65 90 27.7  
2003 4dr Sedan 220-horsepower 3.0L V6
5-speed shiftable automatic AWD		 flat light light 16 13 30 40 88 22.2  
2002 4dr Wagon 220-horsepower 3.0L V6
5-speed shiftable automatic AWD		 flat light light 15 15 10 60 60 50.1  
2002 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD		 flat med none 35 14 9 44 75 37.8  
2002 4dr Sedan turbocharged 250hp 2.7L V6
5-speed shiftable automatic AWD		 flat med light 12 32 13 43 66 44.6  
2002 4dr Sedan 300-horsepower 4.2L V8
5-speed shiftable automatic AWD		 flat light light 6 20 29 45 62 45.7  
2002 4dr Sedan 220-horsepower 3.0L V6
6-speed shiftable CVT FWD		 flat med light 10 40 10 40 70 56.5  
2002 4dr Sedan 220-horsepower 3.0L V6
5-speed shiftable automatic AWD		 flat light hvy 10 30 50 10 65 43.9  
2001 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD		 flat med light 3 33 58 8 75 50.5  
2001 4dr Sedan turbocharged 250hp 2.7L V6
5-speed shiftable automatic AWD		 flat med none 4 12 29 55 71 48.8  
2001 4dr Sedan 200-horsepower 2.8L V6
5-speed shiftable automatic AWD		 hills med hvy 10 30 28 33 65 49.9  
2000 4dr Wagon 200-horsepower 2.8L V6
5-speed shiftable automatic AWD		 hills med hvy 10 30 10 50 65 47.0  
2000 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD		 flat med none 10 20 10 60 120 8.8  
2000 4dr Sedan 200-horsepower 2.8L V6
5-speed shiftable automatic FWD		 hills light light 45 20 5 30 60 38.8  
2000 4dr Sedan 200-horsepower 2.8L V6
5-speed shiftable automatic AWD		 hills med none 8 23 35 33 72 49.4  

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This page shows only averages. See all the Audi A6 / S6 / RS6 fuel economy data.

Mercedes-Benz C-Class vs. Audi A6 / S6 / RS6 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 Mercedes-Benz C-Class and Audi A6 / S6 / RS6'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, Wagons, Coupes, and Convertibles.
See TrueDelta's information for all Mercedes-Benz models and Audi models.

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

Mercedes-Benz C-Class Real Gas Mileage: Pros
YearBody/PowertrainComment
2009 4dr Sedan supercharged 181hp 1.8L I4
5-speed shiftable automatic RWD		 Excellent highway economy for a luxury car. see full Mercedes-Benz C-Class review
2006 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 24mpg city, 32 mgp highway, surpasses many economy cars, tho uses premium fuel. see full Mercedes-Benz C-Class review
2005 4dr Sedan supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 Choose the 1.8L for its lowest gaz consumption and I am very satisfied with the results. This engine is able to keep te gaz bill low, and provide a driving experience with surprising excitment. see full Mercedes-Benz C-Class review
2005 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic AWD		 better than rated fuel economy. we gat 25 mpg overall, and over 29 mpg on trips. see full Mercedes-Benz C-Class review
2004 4dr Sedan supercharged 189hp 1.8L I4
5-speed shiftable automatic RWD		 30-35+ mpg on highway trips.28-30 mpg in town see full Mercedes-Benz C-Class review
2003 2dr Hatch supercharged 189hp 1.8L I4
6-speed manual RWD		 Better than ratings on Highway see full Mercedes-Benz C-Class review
2003 4dr Sedan 168-horsepower 2.6L V6
5-speed shiftable automatic RWD		 I figured I could get over 30 on trips, which I can. Hoped to stay above 25 around town, which I do. see full Mercedes-Benz C-Class review
Mercedes-Benz C-Class Real Gas Mileage: Cons
YearBody/PowertrainComment
2008 4dr Sedan 268-horsepower 3.5L V6
7-speed shiftable automatic RWD		 Slow to downshift, so-so fuel economy in the city. Should really have 30 more horsepower. see full Mercedes-Benz C-Class review
2008 4dr Sedan 228-horsepower 3.0L V6
7-speed shiftable automatic RWD		 Fuel economy is about averge for this type of car, perhaps a bit less, but not a major deal. see full Mercedes-Benz C-Class review
2004 4dr Wagon 168-horsepower 2.6L V6
5-speed shiftable automatic AWD		 The city mpg is usually around 15-17 mpg. Now that's for a hilly neighborhood in a big city, but still. True highway mileage usually about 26 - that's reasonable enough for us. see full Mercedes-Benz C-Class review
 

What Our Members Are Saying about the Real Gas Mileage of the Audi A6 / S6 / RS6

Audi A6 / S6 / RS6 Real Gas Mileage: Pros
YearBody/PowertrainComment
2008 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 It is @ least 4 mpg better hwy & city see full Audi A6 / S6 / RS6 review
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 It's hard to imagine such a powerful luxury car can get such great gas mileage. On a recent trip to Montreal I calculated my fuel economy to be somewhere in the 27mpg range....incredible! see full Audi A6 / S6 / RS6 review
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 better then 28 mpg on highway due to transmission gearing see full Audi A6 / S6 / RS6 review
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 Despite the performance of the A6 3.2 it delivers great mpg for such a large car. It excels on the open road. With cruise it is possible to achieve a range of 650+ miles on a tankful. see full Audi A6 / S6 / RS6 review
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 With the FSI and V6, I regularly see 27 mpg in city. And arround 30-32 mpg highway (no A/C on, and cruising at 80 mph). see full Audi A6 / S6 / RS6 review
2006 4dr Sedan 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 21=22 mpg in cit/commute/highway driving -- pretty good for a large luxury car that weighs 4000+ pounds. see full Audi A6 / S6 / RS6 review
2004 4dr Sedan 220-horsepower 3.0L V6
6-speed shiftable CVT FWD		 Typically 22-24 in-town and 29-31 on the road. Excellent economy for car size and level of comfort. see full Audi A6 / S6 / RS6 review
Audi A6 / S6 / RS6 Real Gas Mileage: Cons
YearBody/PowertrainComment
2006 4dr Wagon 255-horsepower 3.1L V6
6-speed shiftable automatic AWD		 Poor relative to power see full Audi A6 / S6 / RS6 review
2006 4dr Sedan 335-horsepower 4.2L V8
6-speed shiftable automatic AWD		 this is not a car to be used as a city daily driver -- the best mpg you will get in all city driving is 12mpg see full Audi A6 / S6 / RS6 review
2002 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD		 For a car that requires 91+ octane, it would be nice if it got better gas mileage in city driving (around 16-18 mpg). The mileage on the highway is much better (up to 26 mpg). see full Audi A6 / S6 / RS6 review