Owners have filed 71 complaints on the Cadillac CT6, covering 2016–2020. The system named most often is Power Train (41 reports). Worst years by volume: 2017, 2019, 2020; cleanest: 2018, 2016, 2020. 5 reports describe a crash, 1 a death. On average the car was 4.1 years old when the problem happened.
What breaks on Cadillac CT6
Grouped by the system owners named — percentages are shares of all 71 CT6 complaints. Open any row for the full reports in owners' own words.
Power Train 41 Read
The vehicle was shifting harshly and my wheels were experiencing lock up while in motion which was very dangerous. I experienced this on the parkway as well as streets and almost had a few accidents due to this problem. I drive my wife and children in this vehicle. Our safety and lives were put at risk. There were no…
The contact owns a 2020 Cadillac CT6. The contact stated while driving 65 MPH, the transmission seized, and the vehicle was coasted over to the right side of the roadway while waiting for tow service. A dealer as contacted. The vehicle was towed to the dealer where it was diagnosed with transmission failure. The…
The contact owns a 2020 Cadillac CT6. The contact received notification of NHTSA Campaign Number: 25V148000 (Power Train); however, the part to do the recall repair was unavailable. The contact stated that while his wife was driving at an undisclosed speed, the vehicle jerked before slamming into gear. No warning…
Electrical System 5 Read
ABS system error StabiliTrak error Cruise Control error Vehicle with <14,000 miles is exhibiting symptoms of earlier ABS recall
Right after purchase, the nav screen kept flickering, causing a distracted driver situation and a hazard. The dealer did everything they could per gm guidelines, but even after the 1st service visit, the car would shut down in drive mode, as the vehicle was in motion. Then the vehicle would not shut off using the…
Lane departure warning alert does not work
Service Brakes 4 Read
On friday, november 13, 2020 I was stopped at a stoplight in marysville, ohio. It appeared that traffic started to move, so I took my foot off the brake. Almost immediately the emergency braking feature engaged. While this tends to startle you because it is so abrupt, almost like a head-on collision, I pressed on the…
Car was acquired in february and scraping noise in front brakes was noticed in may. Waited to see if the noise would go away by itself but became louder and took to cadillac dealer, miller cadillac in ellicott city md telephone 410-750-1100 on july 30. I was told the mechanic could hear the noise but could not…
The contact owns a 2019 cadillac ct6. While driving, the brake system failed to engage. The vehicle was taken to an unknown dealer where it was diagnosed that the brake booster failed and needed to be replaced. The manufacturer was contacted and provided case number: 9-5610946955. The failure mileage was 1,800
Steering 4 Read
On mar 1, 2021 while driving super cruise mode, my car jerked violently to the left almost striking another car. I was on the fl turnpike about 20 miles north of orlando heading south. The highway was increasing from 2 lane to 3 lane southbound and I was in the right lane. When I entered the lane transition, the car…
Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!
My engine light is on and this is the 15th time I have bought my car in for various engine problems like engine power reduced and other problems with this car. The car would just stop in the middle of the ride or jerking as I drive it. I have been on the highway when it has stalled before as I drive. I have had these…
Suspension 3 Read
This car has safety issues. I purchased a year ago. The axle and wheel broke off in on the car within 30 days. The car has huge manufacturer breakdown. It wouldn't start didn't care what gear it was in it was rolling and almost ran over my friend and ran off into a ditch. I have had several accidents in car due to the…
The contact owns a 2020 cadillac ct6. The contact stated that while depressing the brake pedal, there was a loud screeching sound coming from the wheels. The vehicle was taken to woodland cadillac located at 530 quality cir #101, woodland, ca 95776, to be diagnosed. The contact was informed that the front radial arms…
UNKNOWN, The transmission slips,it wont drive now and my wheel barrings nearly snapped
Engine 3 Read
Stuck Thermostat. Vehicle not achieving operating temperature in the correct time. ALL 3 of the people I know with CT-6's had the exact same issue this year
The turbo boost failed cylinder 2 ( after being repaired ) continues to show issues
When I am turning under 25 mph, I accelerate and there is a delay and a drag before the vehicle starts to accelerate. If I do not allow room, I could get hit because there is a delay. Very dangerous. Almost feels like a vacuum issue
Structure 2 Read
Latelyi have had a problem with my back hatch door opening by it self the problem the last time it happen just before i enter a car wash now ive got a 7800 bill to repair it
The contact owns a 2017 cadillac ct6. Due to the changes in the weather, the rear window had a marbleized haze cover, which made visibility out of the window extremely difficult. The vehicle was taken to schooley cadillac (2101 45th st, west palm beach, fl), but the cause of the failure could not be determined. The…
Air Bags 2 Read
Vehicle involved in a severe accident, airbags did not deploy. The vehicle was in motion on a hwy. Vehicle was struck by oncoming traffic and then launched into a ditch. None of the airbags deployed during the incident
The contact's husband owned a 2016 Cadillac CT6. The contact stated that while her husband was making a left turn, the vehicle was struck on the front passenger side by another vehicle. The contact stated that her husbands air bag did not deploy. Medical attention was needed, and the contact's husband was transported…
CT6 years to avoid — and the clean ones
Complaints per model year. More reports usually means more cars on the road as well as more trouble, so read the crash and fire columns alongside the count.
| Model year | Complaints | Top system | Crashes | Fires |
|---|---|---|---|---|
| 2020 | Power Train | 2 | — | |
| 2019 | Electrical System,service Brakes,forward Collision Avoidance | — | — | |
| 2018 | Electrical System | — | — | |
| 2017 | Electrical System | — | — | |
| 2016 | Air Bags | 3 | — |
The same model year, different builds
Every complaint carries the first 11 characters of the VIN — plant, year, body and engine. That is a production series, and complaints are spread across them very unevenly.
| Measure | Value |
|---|---|
| Distinct production series | 58 |
| Average complaints per series | 1.2 |
| Worst single series | 3 complaints |
| Average age at failure | 4.1 years |
A model average of 1.2 hides a worst series at 3. Enter a VIN above to see the numbers for that exact build instead of the model as a whole.
Owners reported these. Find out if yours is one of them.
- Complaints matched to the exact production run, not just the model
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How we count
Every figure here comes from complaints owners filed with NHTSA — 1,100,006 of them, covering 1,982 models built between 1981 and 2026.
A complaint is an unverified report: someone wrote down what happened to their car. It is not a confirmed defect and not a recall. What makes the volume useful is the pattern — when thousands of owners of the same build describe the same failure, that is a signal no marketing brochure will give you.
Two things we do that the source does not. First, we compute the age of the car at the moment of failure from the incident date and the model year. Second, we group complaints by the first 11 characters of the VIN — the production series — so a bad plant run does not disappear into a model-wide average.
Frequently asked questions
What are the worst years for the CT6?
By complaint volume, 2017, 2019, 2020 drew the most owner reports. Bear in mind that popular years put more cars on the road, so check the crash and fire columns too.
Which CT6 years are the cleanest?
2018, 2016, 2020 have the fewest complaints on file. For recent years that can simply mean the cars are young.
How many complaints does the Cadillac CT6 have?
71 owner complaints filed with NHTSA, covering 2016–2020. Of those, 5 describe a crash and 0 a fire.
Are these complaints verified?
No. They are unverified reports from owners. NHTSA publishes them as filed and investigates only a fraction. The value is in the pattern, not in any single report.
Can I check complaints for one specific car?
Yes — enter its VIN above. We match the first 11 characters, which identify the plant, year, body and engine, so you get complaints on that exact production series rather than the whole model.