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Cadillac STS Fuel Economy (L/100km)

L/100km Number of Vehicles
10 liters per 100 kilometers 1 vehicles
11 liters per 100 kilometers 1 vehicles
12 liters per 100 kilometers 2 vehicles
13 liters per 100 kilometers 0 vehicles
14 liters per 100 kilometers 0 vehicles
15 liters per 100 kilometers 1 vehicles
16 liters per 100 kilometers 0 vehicles
17 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2005 2005 4dr Sedan 320-hp 4.6L V8 6-sp shiftable automatic AWD 16.25
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With the engine, transmission, and rear-wheel drive, the 2005 Cadillac STS has been averaging 16.25 L/100km (liters per 100 kilometers).

The 2005 Cadillac STSs in this analysis were driven mostly in the city (about 45 percent of the kilometers driven). The rest of the kilometers were on the highway at an average speed of 85 kilometers 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 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 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 (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.