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Cadillac STS Fuel Economy (L/100km)

L/100km Number of Vehicles
9 liters per 100 kilometers 2 vehicles
10 liters per 100 kilometers 5 vehicles
11 liters per 100 kilometers 6 vehicles
12 liters per 100 kilometers 7 vehicles
13 liters per 100 kilometers 4 vehicles
14 liters per 100 kilometers 0 vehicles
15 liters per 100 kilometers 1 vehicles
16 liters per 100 kilometers 1 vehicles
17 liters per 100 kilometers 2 vehicles
Model Year Body/Powertrain L/100km  
2008 2008 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic AWD 11.75
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With the engine, transmission, and rear-wheel drive, the 2008 Cadillac STS has been averaging 11.75 L/100km (liters per 100 kilometers).

The 2008 Cadillac STSs in this analysis were driven mostly on the highway at an average speed of 60 kilometers per hour (about 90 percent of the kilometers driven). The rest of the kilometers 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 10.85
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2007 2007 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic RWD 10.8
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2006 2006 4dr Sedan 254-hp 3.6L V6 5-sp shiftable automatic AWD 12.4
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2006 2006 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic RWD 9.6
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2006 2006 4dr Sedan 302-hp 3.6L V6 6-sp shiftable automatic RWD 12.18
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2005 2005 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic AWD 16.25
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2005 2005 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic RWD 11.53
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2005 2005 4dr Sedan 302-hp 3.6L V6 6-sp shiftable automatic RWD 11.2
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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 (L/100km)

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 L/100km based on how and where you drive a car.