2017 Cadillac Ct6: what breaks, and at what mileage
What breaks on the 2017 Cadillac Ct6
On the 2017 Cadillac Ct6, the failure owners report most often is other powertrain problem, with 7 reports on file. Across every failure mode on this year, half the dated reports were filed before 10,000 miles. Overall it scores 82 out of 100, severe risk for a 2017.
Severe risk for a 2017 — 11th riskiest of the 263 2017 vehicles we can rate. 28 owner reports; fleet size estimated from this year's own recall paperwork.
The failures owners actually file about
Owners have reported 14 named failure modes on the 2017 Cadillac Ct6, and the three most-reported carry 46% of everything filed.
Other powertrain problem leads with 7 reports and about 78 per 1,000 vehicles.
Other electrical problem follows with 3 reports.
Other brake problem follows with 3 reports.
By system, the reports fall mostly into transmission (10), electrical (3) and brakes (3).
The mileage the reports cluster at
Too few of the reports on this year carry an odometer reading to describe the timing: 6 of them do. The mileages quoted elsewhere on this page come from the modes that have enough of them.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
Showing the 12 most-reported failure modes of 14. The full list is in the table below.
How reports accumulate
Every report with an odometer reading, cumulative, from 0 to 200,000 miles. A curve that climbs early is a car with early problems, whatever its total.
- Line share of reports filed by that mileage
Severity, and what it costs
Nothing in the reports on the 2017 Cadillac Ct6 mentions a crash, a fire or an injury. That is the ordinary case and it is worth stating: most defect complaints are about a car that stopped working, not one that hurt somebody.
The average severity weight across every report on this year is 3.93, where a stalled engine or a failed airbag weighs many times more than a rattling trim panel, and a figure this high means the reports are dominated by failures with safety consequences rather than annoyances. The weighting is set out in full on the methodology page.
What the top failures cost to put right, as editorial estimates for an independent US shop rather than figures from NHTSA: other powertrain problem at $400–$4,500, other electrical problem at $250–$2,000, other brake problem at $300–$1,800 and torque converter failure at $1,100–$3,200. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.
46% of the reports on this year sit in the engine, transmission, drivetrain or cooling systems — the four where a repair bill is usually four figures.
Every reported failure mode
| Failure mode | System | Reports | With reading | 25th | Median | 75th | Per 1,000 | Typical repair | Severity |
|---|---|---|---|---|---|---|---|---|---|
| Other powertrain problem | transmission | 7 | 2 | — | 3k | — | 77.8 | $400–$4,500 | High |
| Other electrical problem | electrical | 3 | 0 | — | — | — | 33.3 | $250–$2,000 | Moderate |
| Other brake problem | brakes | 3 | 0 | — | — | — | 33.3 | $300–$1,800 | High |
| Torque converter failure | transmission | 2 | 2 | — | 14k | — | 22.2 | $1,100–$3,200 | High |
| Backup camera failure | infotainment | 2 | 0 | — | — | — | 22.2 | $250–$1,200 | Moderate |
| Other speed control problem | adas | 2 | 0 | — | — | — | 22.2 | $250–$2,000 | Critical |
| Engine bay fire | engine | 1 | 0 | — | — | — | 11.1 | $4,000–$20,000 | Critical |
| Radiator or coolant leak | cooling | 1 | 0 | — | — | — | 11.1 | $350–$1,900 | High |
| Complete transmission failure | transmission | 1 | 0 | — | — | — | 11.1 | $2,800–$8,000 | Critical |
| Cruise control failure | adas | 1 | 0 | — | — | — | 11.1 | $200–$1,400 | High |
| Steering rack, gear or tie rod failure | steering | 1 | 0 | — | — | — | 11.1 | $700–$2,600 | High |
| Other engine problem | engine | 1 | 1 | — | 6k | — | 11.1 | $300–$4,000 | High |
| Other wheel or tire problem | wheels | 1 | 0 | — | — | — | 11.1 | $200–$1,500 | High |
| Other visibility problem | glass | 1 | 1 | — | 114k | — | 11.1 | $150–$1,400 | Moderate |
| Unclassified problem | other | 1 | 0 | — | — | — | 11.1 | — | Moderate |
Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound. Repair costs are typical independent-shop ranges for the failure, not figures from these reports.
How often, against how many were built
Scaled by an estimate of how many of these cars exist, the 2017 Cadillac Ct6 draws about 311 per 1,000 vehicles, which puts it in the 99th percentile of complaint rates among 2017 vehicles we can rate.
That denominator is the weakest number on the page and it is fair to say so plainly. Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound.
The working figure is 90 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 2017 vehicles, which is what the risk score uses, is far more robust than the rate itself.
Recalls on the 2017 model year
NHTSA has issued 1 recall campaign covering the 2017 Cadillac Ct6, affecting an estimated 90 vehicles. A recall is a different kind of evidence from a complaint: it is the regulator and the manufacturer agreeing that something has to be fixed, and the fix is free for as long as the car exists.
The campaigns cover exterior lighting. Whether the work was actually done on the car in front of you is a question only the VIN can answer, and the manufacturer or NHTSA will answer it free.
Recalls also distort complaint counts. Publicity about a campaign reminds owners that complaining is possible, so reports for a recalled component often spike after the recall rather than before it.
EXTERIOR LIGHTING
181 vehicles 2021-09-29- Defect
- General Motors, LLC (GM) is recalling certain 2016-2017 Cadillac CT6 vehicles. The Park/Position lights may be excessively bright. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
- Consequence
- The excessive brightness may affect the vision of other drivers, increasing the risk of a crash.
- Remedy
- Dealers will install right and left side in-line headlight jumper harnesses, free of charge. Owner notification letters were mailed November 3, 2021. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is N162016079.
Recall work is free at a franchised dealer regardless of the car's age. Check the VIN at nhtsa.gov/recalls before assuming it was done.
How it ranks in the 2017 field
The score at the top of the page, placed among its peers. The zones are the same thresholds the scorer applies, read out of the scorer itself, so the picture and the band word cannot disagree.
Scores are ranked within the model year, never across years, because an older car has had longer to accumulate reports.
- Left fewer and less serious reports
- Right more, or worse
- Marker this vehicle
Where 2017 sits in the model line
Severe risk for a 2017 — 11th riskiest of the 263 2017 vehicles we can rate. Because the ranking is against the same model year only, age cancels out of it.
Across the 5 model years of this car that carry enough reports to score, 2019 comes out best at 65 and 2017 worst at 82, with 2017 itself at 82.
If the model year is negotiable, 2019, 2018 and 2020 score lower than 2017 by a margin worth acting on. Same body, same engines, different luck — usually a supplier change or a mid-cycle fix, which the complaint data can show but never explain.
Within the 2016–2020 generation specifically, 2019 is the strongest year at 65 and 2017 the weakest at 82.
Scores compare each year against other cars of the same model year, so a low number on an older car is a real result and not an artefact of age.
Shorter is better. Years with too few reports to score are shown without a bar rather than as a zero, because no data is not good news.
Within the 2016-2020 generation, 2019 Cadillac Ct6 scores best at 65 and 2017 Cadillac Ct6 worst at 82.
The limits of complaint data
28 owner reports; fleet size estimated from this year's own recall paperwork. Every count on this page is therefore a floor: it is the number of owners who went to the trouble of filing with a federal agency, which is a small and self-selected fraction of the owners who had the fault.
Of those 28 reports, 6 carried an odometer reading, so the mileages here describe 21% of the sample rather than all of it. Owners also round: readings pile up on multiples of ten thousand, which is why this site publishes "about 90,000 miles" and not "91,438".
Named failure modes come from matching phrases in the complaint text, so a badly worded complaint can land in the wrong bucket. The effect washes out across hundreds of reports and does not wash out across five.
And nothing here predicts what one car will do. These are other people's complaints, filed years apart, on cars maintained by strangers. Read the page as a map of where this model year has previously gone wrong, then have the specific car in front of you inspected.
Questions this page answers
What are the most common problems with the 2017 Cadillac Ct6?
The most-reported failures are other powertrain problem (7 reports, median 5,000 miles), other electrical problem (3 reports) and other brake problem (3 reports). Counts come from owner complaints filed with NHTSA, which are voluntary, so they show what owners bothered to report rather than every fault that occurred.
Is the 2017 Cadillac Ct6 reliable?
It scores 82 out of 100 on our risk index, which is severe — 11th riskiest of the 263 2017 vehicles we can rate. The score is a comparison against other 2017 vehicles, not a prediction about any individual car, and it is built from complaint rates, severity and how early failures appear.
Which year of the Cadillac Ct6 is best?
Within the 2016–2020 generation, 2019 scores best at 65 out of 100 and 2017 worst at 82. Same body, same engines, different luck.
Where this comes from. Every figure above is computed from NHTSA owner complaints and recall records for this exact make, model and year. Complaints are voluntary and self-selected, so treat counts as a floor. The methodology page writes out each formula, and the same numbers are available as JSON.
What breaks at my mileage Compare with another car
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed