Is the 2003 Cadillac CTS a bad year?
313 owner complaints to NHTSA. Engine complaints: 62, 6.2× a quiet CTS year.
Keep it, but watch the engine
Half of the engine complaints for this year were filed at 60k–104k miles, where you are now.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2003 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 73,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| Electrical systemSTANDS OUT | 56 (18%) | 53k–128k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| EngineSTANDS OUT | 56 (18%) | 57k–104k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| BrakesSTANDS OUT | 47 (15%) | 51k–108k miles · around this mileage | Brake pad replacement (one axle) $115–$390 · Brake pads and rotors replacement (one axle) $200–$1,084 |
| Exterior lighting | 37 (12%) | 49k–90k miles · around this mileage | — |
| Air bags | 36 (12%) | 30k–115k miles · around this mileage | — |
| Steering | 28 (9%) | 34k–108k miles · around this mileage | Steering rack and pinion replacement $700–$2,100 |
| Speed control | 24 (8%) | 26k–86k miles · around this mileage | — |
| Body structure | 22 (7%) | 25k–103k miles · around this mileage | — |
| Stability control | 22 (7%) | 54k–113k miles · around this mileage | — |
| Transmission and drivetrain | 25 (8%) | 9k–67k miles · mostly behind | — |
| Equipment | 11 (4%) | too few with a mileage | — |
| Fuel system | 11 (4%) | too few with a mileage | — |
| Suspension | 11 (4%) | too few with a mileage | — |
| Engine and cooling | 9 (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 73,000 miles. Not a quote.
What owners reported alongside their complaints
Of 313 complaints: 29 mention a crash · 12 mention a fire · 17 report an injury · 3 say the car was towed.
No complaints in the last 12 months; the newest was filed in Apr 2023.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
Starting around september, my car would randomly shut off while in motion, at various speeds.
Oil in coolant reservoir due to oil cooler located under the intake manifold, between the cylinder heads leaking.
The PCV valve system design is defective. On (4) occasions the pressure build-up causing massive oil leaks at the valve cover.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 73,000 miles), not by content. Unverified.
Recalls for the 2003 Cadillac CTS: 4
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.
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.
Certain minivans, passenger and sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 225, "Child restraint anchorage system." The owner's manual does not explain the meaning of the location symbols for the child restraint lower universal anchorage system. This does not meet the requirements of the standard.
Some passenger vehicles have a condition in which the intermediate steering shaft bolt may be loose. An improperly tightened bolt could loosen, resulting in separation of the upper and lower steering shafts causing a loss of vehicle control. If this happens while the vehicle is moving, a crash could result without prior warning.
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: 131
Repair instructions Cadillac sent its dealers for symptoms seen in the shop on the 2003 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…
Neighbouring years
2004 CTS: 224 complaints, keep it, but watch the transmission.
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 2003 Cadillac CTS a bad year?
313 owner complaints to NHTSA. Engine complaints: 62, 6.2× a quiet CTS year. At 73,000 miles the tool says: Keep it, but watch the engine. Half of the engine complaints for this year were filed at 60k–104k miles, where you are now.
What are the most common problems with the 2003 Cadillac CTS?
By owner complaints to NHTSA: electrical system (56), engine (56), brakes (47), exterior lighting (37), air bags (36). Half of the engine complaints were filed between 60k–104k miles.
How many recalls does the 2003 Cadillac CTS have?
4 recall campaigns list this model year: Electrical system (NHTSA 14V-394), Brakes (NHTSA 10V-105), Equipment (NHTSA 03V-250), Steering (NHTSA 03V-115). 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.