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Cadillac STS vs. Mercury Montego MPG

Chart is based on 28 fuel economy reports for the Cadillac STS and 11 fuel economy reports for the Mercury Montego.

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.

Mercury Montego MPG

Mercury Montego Mercury Montego 2007 22.5 MPG Highway Percentage 49 percent Mercury Montego Mercury Montego 2007 32.8 MPG Highway Percentage 77 percent Mercury Montego Mercury Montego 2006 19.8 MPG Highway Percentage 20 percent Mercury Montego Mercury Montego 2005 24.0 MPG Highway Percentage 15 percent Mercury Montego Mercury Montego 2005 29.5 MPG Highway Percentage 90 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 203-horsepower 3.0L V6
CVT AWD		 flat light light 6 16 29 49 60 22.5  
2007 4dr Sedan 203-horsepower 3.0L V6
6-speed automatic FWD		 hills light hvy 0 0 23 77 68 32.8  
2006 4dr Sedan 203-horsepower 3.0L V6
CVT AWD		 flat light none 50 10 20 20 60 19.8  
2005 4dr Sedan 203-horsepower 3.0L V6
CVT AWD		 flat med light 10 10 65 15 65 24.0  
2005 4dr Sedan 203-horsepower 3.0L V6
6-speed automatic FWD		 mtns light light 0 0 10 90 65 29.5  

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This page shows only averages. See all the Mercury Montego fuel economy data.

Cadillac STS vs. Mercury Montego 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 Mercury Montego'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 Mercury 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 Mercury Montego

Mercury Montego Real Gas Mileage: Pros
YearBody/PowertrainComment
2007 4dr Sedan 203-horsepower 3.0L V6
6-speed automatic FWD		 It is great for such a big car. 30 mpg is pretty easy for highway cruising, and mixing driving will do 24-25. see full Mercury Montego review
2005 4dr Sedan 203-horsepower 3.0L V6
6-speed automatic FWD		 A large car that gets over 20 MPG in city driving is great. The 29 MPG highway rating is nice, but the car is mainly used as a grocery getter / errand runner. see full Mercury Montego review
2005 4dr Sedan 203-horsepower 3.0L V6
6-speed automatic FWD		 Surprisingly good fuel mileage. 24 city/31 Hwy. see full Mercury Montego review