2009 Cadillac STS
The 2009 Cadillac STS is listed in 4 versions in the EPA fuel economy database, with 3.6 L 6-cyl and 4.6 L 8-cyl powertrains. Combined fuel economy ranges from 17 to 20 MPG (best: 11.8 L/100 km).
Model year2009
Versions4
ClassMidsize Cars
Drive4-Wheel or All-Wheel Drive, Rear-Wheel Drive
Engines, transmissions & fuel economy
| Version | Powertrain | Transmission | Drive | Fuel | MPG city / hwy / comb | L/100 km (comb) | CO2 g/mi | Class |
|---|---|---|---|---|---|---|---|---|
| STS | 3.6 L 6-cyl | Automatic (S6) | Rear-Wheel Drive | Regular | 17 / 26 / 20 | 11.8 | 444 | Midsize Cars |
| STS | 4.6 L 8-cyl | Automatic (S6) | Rear-Wheel Drive | Premium | 15 / 24 / 18 | 13.1 | 494 | Midsize Cars |
| STS AWD | 3.6 L 6-cyl | Automatic (S6) | 4-Wheel or All-Wheel Drive | Regular | 17 / 26 / 20 | 11.8 | 444 | Midsize Cars |
| STS AWD | 4.6 L 8-cyl | Automatic (S6) | 4-Wheel or All-Wheel Drive | Premium | 15 / 22 / 17 | 13.8 | 523 | Midsize Cars |
Figures are EPA estimates for the U.S. market (U.S. gallons). Your mileage will vary. Transmissions: (S6) = 6-speed with manual select mode, (AV) = continuously variable, (AM) = automated manual.
Safety recalls
Check the NHTSA recall database for the 2009 Cadillac STS.