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Cadillac STS vs. Mercedes-Benz S-Class MPG

Chart is based on 28 fuel economy reports for the Cadillac STS and 22 fuel economy reports for the Mercedes-Benz S-Class.

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.

Mercedes-Benz S-Class MPG

Mercedes-Benz S-Class Mercedes-Benz S-Class 2007 21.8 MPG Highway Percentage 45 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2007 25.0 MPG Highway Percentage 70 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2006 24.7 MPG Highway Percentage 98 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2006 23.5 MPG Highway Percentage 80 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2006 23.0 MPG Highway Percentage 85 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2004 19.9 MPG Highway Percentage 47 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2004 24.0 MPG Highway Percentage 80 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2003 18.1 MPG Highway Percentage 68 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2003 17.6 MPG Highway Percentage 71 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2002 19.5 MPG Highway Percentage 29 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2001 11.7 MPG Highway Percentage 0 percent Mercedes-Benz S-Class Mercedes-Benz S-Class 2000 24.0 MPG Highway Percentage 82 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
2007 4dr Sedan, ext. 382-horsepower 5.5L V8
7-speed shiftable automatic RWD		 flat med none 5 15 35 45 62 21.8  
2007 4dr Sedan, ext. 382-horsepower 5.5L V8
7-speed shiftable automatic AWD		 flat light none 10 10 10 70 65 25.0  
2006 4dr Sedan, ext. 302-horsepower 5.0L V8
7-speed shiftable automatic RWD		 flat med hvy 1 1 0 98 78 24.7  
2006 4dr Sedan, ext. 302-horsepower 5.0L V8
5-speed shiftable automatic AWD		 flat light none 0 0 20 80 65 23.5  
2006 4dr Sedan, ext. 275-horsepower 4.3L V8
7-speed shiftable automatic RWD		 flat light hvy 0 15 0 85 60 23.0  
2004 4dr Sedan, ext. 302-horsepower 5.0L V8
5-speed shiftable automatic AWD		 flat med none 1 45 8 47 80 19.9  
2004 4dr Sedan, ext. 275-horsepower 4.3L V8
7-speed shiftable automatic RWD		 flat med hvy 0 2 18 80 75 24.0  
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2003 4dr Sedan, ext. turbocharged 493hp 5.5L V12
5-speed shiftable automatic RWD		 flat light light 7 11 15 68 108 18.1  
2003 4dr Sedan, ext. 275-horsepower 4.3L V8
5-speed shiftable automatic RWD		 flat med hvy 6 12 12 71 70 17.6  
2002 4dr Sedan, ext. 275-horsepower 4.3L V8
5-speed shiftable automatic RWD		 flat med hvy 13 6 54 29 68 19.5  
2001 4dr Sedan, ext. 302-horsepower 5.0L V8
5-speed shiftable automatic RWD		 flat med none 20 80 0 0 0 11.7  
2000 4dr Sedan, ext. 275-horsepower 4.3L V8
5-speed shiftable automatic RWD		 flat v.lt light 0 7 11 82 62 24.0  

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

Cadillac STS vs. Mercedes-Benz S-Class 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 Cadillac STS and Mercedes-Benz S-Class'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 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 S-Class

Mercedes-Benz S-Class Real Gas Mileage: Pros
YearBody/PowertrainComment
2007 4dr Sedan, ext. 382-horsepower 5.5L V8
7-speed shiftable automatic RWD		 Since my driving is about 50-50 city and highway, I average about 20-21 mpg, using premium fuel. All highway is 29-30mpg and all city is 14-15mpg. see full Mercedes-Benz S-Class review
2007 0 While on long trips at 70-80mph I average 32mpg around town it never goes better than 24mpg. Easy on the pedal sure shows results but fully loaded the thing shifts like a two door sports. see full Mercedes-Benz S-Class review
Mercedes-Benz S-Class Real Gas Mileage: Cons
YearBody/PowertrainComment
2007 4dr Sedan turbocharged 232hp 3.0L V6 Diesel
7-speed shiftable automatic RWD		 Very, very expensive see full Mercedes-Benz S-Class review
2007 4dr Sedan, ext. 382-horsepower 5.5L V8
7-speed shiftable automatic RWD		 Driving it in a lot of stop and go traffic it drinks gas. see full Mercedes-Benz S-Class review
2007 0 Fuel cost are a killer and servicing requires finding an allternative to the Mercedes Garage see full Mercedes-Benz S-Class review
2001 4dr Sedan, ext. 302-horsepower 5.0L V8
5-speed shiftable automatic RWD		 20l/100km but its still worth it see full Mercedes-Benz S-Class review