Is the 2006 Cadillac CTS a bad year?
269 owner complaints to NHTSA. Transmission complaints: 45, 4.5× a quiet CTS year.
Keep it, but watch the transmission
The transmission draws 4.5× the complaints of a quiet CTS year, spread over 9k–97k miles, so there's no single mileage to plan around.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2006 CTS owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 42,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| BrakesSTANDS OUT | 56 (21%) | 35k–110k miles · around this mileage | Brake pad replacement (one axle) $115–$390 · Brake pads and rotors replacement (one axle) $200–$1,084 |
| Transmission and drivetrainSTANDS OUT | 45 (17%) | 9k–97k miles · around this mileage | CV axle / CV joint replacement (one side) $300–$1,500 · Automatic transmission replacement $2,500–$7,000 |
| Air bagsSTANDS OUT | 87 (32%) | 44k–98k miles · ahead | — |
| Electrical systemSTANDS OUT | 43 (16%) | 47k–102k miles · ahead | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Fuel system | 10 (4%) | 38k–96k miles · around this mileage | Fuel pump replacement $220–$1,500 · Fuel injector replacement (one injector) $300–$1,200 |
| Suspension | 10 (4%) | 8k–63k miles · around this mileage | Ball joint replacement (one joint) $200–$500 · Control arm replacement (one arm) $200–$900 |
| Engine | 35 (13%) | 55k–113k miles · ahead | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Speed control | 10 (4%) | too few with a mileage | — |
| Exterior lighting | 7 (3%) | too few with a mileage | — |
| Visibility and wipers | 7 (3%) | too few with a mileage | — |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 42,000 miles. Not a quote.
What owners reported alongside their complaints
Of 269 complaints: 23 mention a crash · 2 mention a fire · 11 report an injury · 2 say the car was towed.
2 complaints were filed in the last 12 months, the newest in Jun 2026.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
2006 Cadillac cts. Four separate incidents in less than two years where the rear differential, pinion seal has leaked at highway speeds causing smoke, noise and rendered the car un-drivable.
The first problem I encountered with the vehicle was a broken clutch pedal return spring that had fallen out from under the dashboard at 8,850 miles.
I am the owner of a 2006 Cadillac CTS 3.6L V6 with a broken timing chain which is a $1,500 repair.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 42,000 miles), not by content. Unverified.
Recalls for the 2006 Cadillac CTS: 6
In the affected vehicles, the electrical terminals of the fuel pump module may overheat resulting in the melting of the flange material. If the flange melts, a hole may be created allowing the fuel pump to leak fuel, causing the vehicle to stall, increasing the risk of a vehicle crash.
This defect can affect the safe operation of the airbag system. The key fob (if applicable), should also be removed from the key ring. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Some of these vehicles have a condition in which repeated flexing of the passenger sensing system mat in the front passenger seat may cause the mat to kink, bend, or fold. This flexing can break the connections in the mat. Non-deployment of the front passenger air bag in the event of a crash necessitating that air bag's deployment may reduce protection of the passenger and increase the risk or severity of injury to them.
General motors has notified NHTSA of a defect in certain model year 2003-2007 Cadillac CTS vehicles currently registered in or originally sold in connecticut, delaware, illinois, indiana, iowa, maine, maryland, massachusetts, michigan, minnesota, missouri, new hampshire, new jersey, new york, ohio, pennsylvania… The brake hose-tube interface may rupture suddenly without prior warning and increase vehicle stopping distance may occur increasing the risk of a crash.
On certain passenger vehicles, the rear axle pinion seal does not meet all of the specifications and may experience a fluid leak. A rear differential failure may cause loss of motive power and possibly loss of control increasing the risk of a crash.
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. If the engine stops running, the operator will not be able to restart the vehicle which could increase the risk of a crash.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from Cadillac: 219
Repair instructions Cadillac sent its dealers for symptoms seen in the shop on the 2006 Cadillac CTS. Ask a dealer or mechanic for a bulletin by its number.
Rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up
Guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system
Proper way to install the pistons in an engine
Normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal…
NHTSA defect investigations: 3
IEE Passenger Sensing System Mats
Rear drivetrain component failure
Failure of the rear differential
Neighbouring years
2005 CTS: 277 complaints, keep it, but watch the transmission · 2007 CTS: 217 complaints, keep it.
Every Cadillac CTS year
2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · All CTS years side by side
Other Cadillac models: Cadillac ATS · Cadillac DTS · Cadillac Deville · Cadillac Escalade · Cadillac Escalade ESV · Cadillac Lyriq · Cadillac SRX · Cadillac STS · Cadillac Seville · Cadillac XT5 · Cadillac XTS. All makes and models.
Questions
Is the 2006 Cadillac CTS a bad year?
269 owner complaints to NHTSA. Transmission complaints: 45, 4.5× a quiet CTS year. At 42,000 miles the tool says: Keep it, but watch the transmission. The transmission draws 4.5× the complaints of a quiet CTS year, spread over 9k–97k miles, so there's no single mileage to plan around.
What are the most common problems with the 2006 Cadillac CTS?
By owner complaints to NHTSA: brakes (56), transmission and drivetrain (45), air bags (87), electrical system (43), fuel system (10). Half of the transmission complaints were filed between 9k–97k miles.
How many recalls does the 2006 Cadillac CTS have?
6 recall campaigns list this model year: Fuel system (NHTSA 14V-542), Electrical system (NHTSA 14V-394), Air bags (NHTSA 10V-644), Brakes (NHTSA 10V-105) and more. A recall may cover only some cars; check by VIN at nhtsa.gov/recalls.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.