2011 Cadillac STS
The Verdict
Worst problem area
Electrical
Electrical leads by volume: 3 of 7 complaints (43%) mention it. Complaints mentioning Airbags & Restraints include more reported injuries (2) than those mentioning any other identified area.
Complaints filed rose from 4 in 2010 to 7 in 2011.
Data last changed . Sources: NHTSA complaints and recalls, EPA fuel economy data. Methodology
Cost, Fuel Economy & Complaint History
| Category | 2009 | 2010 | 2011 | vs. 2011 Midsize Cars |
|---|---|---|---|---|
| Annual fuel cost ($) | 3,100–4,550 | 2,950–3,650 | 2,950 | |
| Combined MPG | 17–20 | 17–21 | 21 | |
| City / Highway MPG | 15–17 / 22–26 | 15–18 / 22–27 | 18 / 26–27 | |
| CO₂ tailpipe (g/mi) | 444–523 | 423–523 | 423 | |
| Complaints filed | 15 | 4 | 7 | |
| Recalls issued | 0 | 0 | 0 | |
| Crash-involved complaints | 4 | 0 | 1 | |
| Fire-involved complaints | 0 | 0 | 0 | |
| Injuries reported | 0 | 0 | 2 | |
| Deaths reported | 0 | 0 | 0 | |
| Configurations compared | 4 | 4 | 2 |
Not compared: this database has no vehicle sales or registration figures, so a raw count mostly reflects how many were sold, not how safe the vehicle is.
Common questions
How many recalls does the 2011 Cadillac STS have?
No NHTSA recall campaigns as of Sep 16, 2026.
What is the most common complaint about the 2011 Cadillac STS?
Electrical: 3 of 7 NHTSA complaints (43%) mention it.
What gas mileage does the 2011 Cadillac STS get?
EPA rates it 21 MPG combined across 2 configurations.
How much does it cost to fuel a 2011 Cadillac STS?
EPA estimates $2,950 a year in fuel costs, using EPA's assumptions.
Similar Vehicles
EPA-Rated Configurations (2)
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 1 | Automatic (S6) | 6 | 3.6L | Rear-Wheel Drive | Regular | Midsize Cars | 18 mpg | 27 mpg (high) | 21 mpg | $2,950 | 423 g/mi |
| Configuration 2 | Automatic (S6) | 6 | 3.6L | All-Wheel Drive | Regular | Midsize Cars | 18 mpg | 26 mpg (low) | 21 mpg | $2,950 | 423 g/mi |
Complaints by Category
| Category | Complaints | Crash-Involved | Fire-Involved | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 0 | 0 | 0 | 0 | 0 |
| Transmission & Drivetrain | 0 | 0 | 0 | 0 | 0 |
| Fuel System | 0 | 0 | 0 | 0 | 0 |
| Electrical | 3 | 0 | 0 | 0 | 0 |
| Brakes | 2 | 0 | 0 | 0 | 0 |
| Steering | 1 | 0 | 0 | 0 | 0 |
| Suspension, Wheels & Tires | 0 | 0 | 0 | 0 | 0 |
| Airbags & Restraints | 1 | 1 | 0 | 2 | 0 |
| Driver Assistance & Speed Control | 1 | 0 | 0 | 0 | 0 |
| Body, Seats & Latches | 0 | 0 | 0 | 0 | 0 |
| Visibility & Lighting | 1 | 0 | 0 | 0 | 0 |
| Other | 0 | 0 | 0 | 0 | 0 |
A complaint that names more than one category is counted in each, so the rows can add up to more than the total number of complaints.
Recalls
No recalls have been issued for this model-year.