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Cadillac STS MPG

MPG Number of Vehicles
14 miles per gallon 2 vehicles
15 miles per gallon 2 vehicles
16 miles per gallon 0 vehicles
17 miles per gallon 0 vehicles
18 miles per gallon 2 vehicles
19 miles per gallon 4 vehicles
20 miles per gallon 5 vehicles
21 miles per gallon 3 vehicles
22 miles per gallon 3 vehicles
23 miles per gallon 2 vehicles
24 miles per gallon 2 vehicles
25 miles per gallon 2 vehicles
26 miles per gallon 1 vehicles
Model Year Body/Powertrain MPG  
2008 2008 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic AWD 20.05
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With the engine, transmission, and rear-wheel drive, the 2008 Cadillac STS has been averaging 20.05 MPG (miles per gallon).

The 2008 Cadillac STSs in this analysis were driven mostly on the highway at an average speed of 60 miles per hour (about 90 percent of the miles driven). The rest of the miles were in the city (10 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).

In addition, the average 2008 Cadillac STS in this analysis was driven on flat terrain with an ultra-light foot and the AC on only some of the time.
2008 2008 4dr Sedan 302-hp 3.6L V6 6-sp shiftable automatic RWD 21.75
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2007 2007 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic RWD 22
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2006 2006 4dr Sedan 254-hp 3.6L V6 5-sp shiftable automatic AWD 19
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2006 2006 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic RWD 24.5
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2006 2006 4dr Sedan 302-hp 3.6L V6 6-sp shiftable automatic RWD 20
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2005 2005 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic AWD 14.55
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2005 2005 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic RWD 20.52
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2005 2005 4dr Sedan 302-hp 3.6L V6 6-sp shiftable automatic RWD 21
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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
 

Cadillac STS Gas Mileage (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's real-world MPG based on how and where you drive a car.