Model year
2006 Cadillac STS
NHTSA lists 4 recalls and 139 complaints for the 2006 Cadillac STS (recall file dated Oct 23, 2026; complaint file dated Oct 23, 2026). The components listed on the most complaints are AIR BAGS (50), ELECTRICAL SYSTEM (20), ENGINE (20). NHTSA lists 1 investigation. NHTSA star ratings from before model year 2011 use an older method and are not shown here. EPA rates it 17–19 mpg combined depending on configuration (fuel economy file dated Sep 29, 2026). EPA's annual fuel-cost figures for these configurations are $3,550–$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
14V542000 · Sep 9, 2014
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
General Motors LLC (GM) is recalling certain model year 2004-2007 Cadillac CTS-V vehicles manufactured October 6, 2003, to March 15, 2007, and 2006-2007 Cadillac STS-V vehicles manufactured June 23, 2005, to March 15, 2007. In the affected vehicles, the electrical terminals of…
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.
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.
06V007000 · Jan 13, 2006
VEHICLE SPEED CONTROL
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH ALL WHEEL DRIVE AND A 3.6L V6 ENGINE, THE TORQUE MONITORING FUNCTIONS OF THE ELECTRONIC THROTTLE CONTROL (ETC) ARE NOT ENABLED. THESE FUNCTIONS CAN LIMIT ENGINE SPEED AND TORQUE IF UNUSUAL ENGINE CONTROL MODULE (ECM) HARDWARE OR…
Complaints
139 distinct complaints. Crash flag on 16, fire flag on 6, injury field 20, 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 · 3.6L · Automatic (S5) · Rear-Wheel Drive | Regular Gasoline | 16 | 25 | 19 | — | — | $3,550 |
| STS · 4.6L · Automatic (S5) · Rear-Wheel Drive | Premium Gasoline | 15 | 24 | 18 | — | — | $4,550 |
| STS AWD · 3.6L · Automatic (S5) · 4-Wheel or All-Wheel Drive | Regular Gasoline | 15 | 23 | 18 | — | — | $3,700 |
| STS AWD · 4.6L · Automatic (S5) · 4-Wheel or All-Wheel Drive | Premium Gasoline | 14 | 21 | 17 | — | — | $4,850 |
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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 2006 Cadillac STS at NHTSA. Complaint narratives stay on NHTSA's site and are not copied here.