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Cadillac STS MPG

MPG Number of Vehicles
14 miles per gallon 1 vehicles
15 miles per gallon 1 vehicles
16 miles per gallon 0 vehicles
17 miles per gallon 0 vehicles
18 miles per gallon 0 vehicles
19 miles per gallon 1 vehicles
20 miles per gallon 1 vehicles
21 miles per gallon 1 vehicles
22 miles per gallon 0 vehicles
23 miles per gallon 1 vehicles
Model Year Body/Powertrain MPG  
2005 2005 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic AWD 14.55
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With the engine, transmission, and rear-wheel drive, the 2005 Cadillac STS has been averaging 14.55 MPG (miles per gallon).

The 2005 Cadillac STSs in this analysis were driven mostly in the city (about 45 percent of the miles driven). The rest of the miles were on the highway at an average speed of 85 miles per hour (40 percent), in heavy traffic (10 percent), and in the suburbs (0 percent).

In addition, the average 2005 Cadillac STS in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
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 2005 Cadillac STS

2005 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
 

2005 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.