2011 Cadillac STS fuel economy
The EPA lists 2 versions of the 2011 Cadillac STS. Combined fuel economy ranges from 21 to 21 MPG; the most efficient version is rated 18 city / 27 highway.
At a glance
- Combined
- 21 MPG
- City and highway
- 18 and 27 most efficient version
- Yearly fuel cost
- $3,200 EPA estimate, most efficient version
Source: U.S. EPA fueleconomy.gov
Every version the EPA tested
| Version | Engine | Drive | City | Highway | Combined | Yearly fuel cost |
|---|---|---|---|---|---|---|
| STS Automatic (S6) | 6-cyl 3.6L | Rear-Wheel Drive | 18 | 27 | 21 MPG | $3,200 |
| STS AWD Automatic (S6) | 6-cyl 3.6L | All-Wheel Drive | 18 | 26 | 21 MPG | $3,200 |
At EPA assumptions, the most efficient version costs about $3,200 per year in fuel.