Model year
2005 Cadillac STS
NHTSA lists 3 recalls and 101 complaints for the 2005 Cadillac STS (recall file dated Oct 23, 2026; complaint file dated Oct 23, 2026). The components listed on the most complaints are ELECTRICAL SYSTEM (19), POWER TRAIN (13), ENGINE (12). NHTSA lists 1 investigation. NHTSA star ratings from before model year 2011 use an older method and are not shown here. EPA rates it 17–18 mpg combined depending on configuration (fuel economy file dated Sep 29, 2026). EPA's annual fuel-cost figures for these configurations are $3,700–$4,850, based on 15,000 miles and 55% city driving.
- 2005 101 complaints
- 2006 139 complaints
- 2007 52 complaints
- 2008 50 complaints
- 2009 15 complaints
- 2010 4 complaints
- 2011 7 complaints
Recalls
07V589000 · Dec 20, 2007
POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL
ON CERTAIN PASSENGER VEHICLES, THE REAR AXLE PINION SEAL DOES NOT MEET ALL OF THE SPECIFICATIONS AND MAY EXPERIENCE A FLUID LEAK.
06V125000 · Apr 20, 2006
SUSPENSION:REAR
CERTAIN VEHICLES HAVE A LEFT OR RIGHT REAR SUSPENSION TOE LINK THAT COULD SEPARATE BECAUSE OF AN INCORRECT WELD.
06V020000 · Jan 25, 2006
FUEL SYSTEM, GASOLINE:DELIVERY
CERTAIN VEHICLES EQUIPPED WITH V6 ENGINES MAY HAVE A CONDITION WHERE FUEL IS NO LONGER SUPPLIED TO THE ENGINE. THIS CONDITION OCCURS WITHOUT THE ILLUMINATION OF THE FUEL LEVEL LOW INDICATOR LIGHT OR THE WARNING CHIME.
Complaints
101 distinct complaints. Crash flag on 13, fire flag on 4, injury field 4, deaths field 0. A complaint can be counted under more than one component. The injury and death figures are the file's numbers (the highest value on each complaint, then added), not a separate verified count of people.
Investigations
| Action | Subject | Opened | Closed |
|---|---|---|---|
| PE07037 | FAILURE OF THE REAR DIFFERENTIAL · POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT | Jul 17, 2007 | Dec 27, 2007 |
Safety ratings
NHTSA star ratings from before model year 2011 use an older method and are not shown here.
Fuel economy
| Configuration | Fuel | City | Hwy | Comb | kWh/100 mi | Range | Annual fuel cost |
|---|---|---|---|---|---|---|---|
| STS 2WD · 3.6L · Automatic (S5) · Rear-Wheel Drive | Regular Gasoline | 16 | 23 | 18 | — | — | $3,700 |
| STS 2WD · 4.6L · Automatic (S5) · Rear-Wheel Drive | Premium Gasoline | 15 | 23 | 18 | — | — | $4,550 |
| STS AWD · 4.6L · Automatic (S5) · 4-Wheel or All-Wheel Drive | Premium Gasoline | 14 | 21 | 17 | — | — | $4,850 |
Open this model year in the fuel-cost calculator. The calculator starts with no fuel price filled in.
Check a vehicle
This page is not a VIN lookup. NHTSA's recall tool checks a specific vehicle: nhtsa.gov/recalls. NHTSA's page for this model year is 2005 Cadillac STS at NHTSA. Complaint narratives stay on NHTSA's site and are not copied here.