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Cadillac CT6 VIN Check

NHTSA holds 75 owner complaints on the Cadillac CT6 from 61 production runs; the worst run has 3, the typical one 1.2.

NHTSA complaint records · 75 complaints · 61 runs · 2016–2020 · Updated Nov 4, 2026
Quick answer

The most-reported CT6 run is 1G6KF5RS3HU (2017 builds) with 3 complaints, 2.5× the typical run. Power train problems make up 53% of reports; 2017 is the worst model year at 1.4 complaints per run; NHTSA lists 8 recall campaigns for CT6 model years 2016–2020.

Which build runs owners report most

A production run is the first 11 characters of the VIN: plant, model year, body and engine. The Cadillac CT6 has 61 of them on record. The five runs at the top of this table hold 16% of every CT6 complaint on file.

FIG.01·Cadillac CT6 — complaints by production run
Production run (VIN 1–11)YearComplaintsInvolved a crashFire
1G6KF5RS3HU••••••20173——
1G6KB5RS4KU••••••20193——
1G6KE5R6XHU••••••20172——
1G6KB5RS4LU••••••20202——
1G6KD5RS9JU••••••20182——
1G6KB5RS9LU••••••202021—
1G6KD5RS3HU••••••20172——
1G6KG5RS6JU••••••20182——
1G6KD5RS9HU••••••20172——
1G6KN5R62HU••••••20172——
1G6KN5R6XHU••••••20172——
1G6KD5RS2HU••••••20172——
ROWS 12·SOURCE NHTSA complaint records, grouped by VIN prefix

Each of the other 49 CT6 runs has 2 complaints or fewer. ForCar has checked 36 CT6 VINs so far, most often 2020, 2017, 2019 builds; 1 of them belong to one of the 12 runs above.

Which model years to check twice

Complaints per production run, so a year that simply sold more does not top the list. On the Cadillac CT6 the gap between build years is 1.4×: a 2017 car draws 1.4 complaints per run, a 2016 one 1.

FIG.02·Cadillac CT6 — complaint rate by model year
YearPer runComplaintsRunsCrashes
20201.21192
20191.21513—
20181.21210—
20171.42618—
2016111113
ROWS 5·SOURCE NHTSA complaint records

Heaviest year here is 2017 at 1.4 complaints per run; lightest is 2016 at 1.

What to inspect on this car

One system accounts for 53% of everything Cadillac CT6 owners report: Power Train, 45 of 75 complaints. Start the pre-purchase inspection there.

FIG.03·Cadillac CT6 — most-reported systems
SystemComplaintsInvolved a crashFire
Power Train45——
Engine8——
Service Brakes81—
Electrical System7——
Forward Collision Avoidance51—
Suspension41—
Unknown Or Other41—
Fuel/propulsion System4——
ROWS 8·SOURCE NHTSA complaint records

Recalls to check against your VIN

NHTSA has 8 recall campaigns on the Cadillac CT6; the 6 below cover build years 2016 to 2020. These are for the model and year; whether one is still open on a given car, only that VIN can tell.

FIG.04·Cadillac CT6 — recall campaigns
CampaignComponentModel years
18V437000Seats:mid/rear Assembly2016–2018
25V148000Power Train:automatic Transmission2019–2020
18V673000Seat Belts:rear/other2018–2019
21V759000Exterior Lighting2016–2017
19V731000Tires:pressure Monitoring And Regulating Systems2020
19V889000Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:abs Warning Light2019
ROWS 6·SOURCE NHTSA recall campaigns

18V437000 was opened in 2018 on cars built from 2016: 2 years on the road before the recall.

The CT6 against its rivals

The CT6 draws 1.2 complaints per production run; the Kia K900 1.9. That is the lowest rate of the 2.

FIG.05·Cadillac CT6 VIN check vs rivals
ModelComplaintsRunsPer runInvolved a crash
Cadillac CT675611.26.7%
Kia K90068351.91.5%
ROWS 2·SOURCE NHTSA complaint records

How serious were they

Of the 75 reports on the Cadillac CT6, 6.7% involved a crash against 5.8% across all vehicles, above the norm.

FIG.06·Cadillac CT6 — complaint severity
OutcomeCadillac CT6All vehicles
Complaints filed751,115,966
Involved a crash5 (6.7%)64,194 (5.8%)
Involved a fire0 (0%)26,974 (2.4%)
Injuries reported258,013
Deaths reported12,728
ROWS 5·SOURCE NHTSA complaint records

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How this check works

The file behind this page holds 1,115,966 complaints filed with NHTSA between 1981 and 2026, across 298,921 production runs. The Cadillac CT6 share of that is 75 complaints over 61 runs, 0.01% of everything on record.

Everything on the Cadillac CT6
Recalls15 campaignsFuel economy28 mpg bestReliability4.0/5Common problems77 complaintsDimensionsSize, weight, generationsCargo space15 cu ftUsed prices95 listingsWhat yours is worthValue by year & mileageInsurance costEstimated per yearWindow stickerOriginal Monroney labelDecode a VINWhat each character meansAbout this car2016–2020

Frequently asked questions

How do I check a Cadillac CT6 VIN for free?

Enter the 17 characters above. ForCar matches the first eleven, the production run, against 75 NHTSA complaints from 61 CT6 runs and 8 recall campaigns. No account, no card.

Which CT6 production run has the most complaints?

1G6KF5RS3HU, a 2017 build, with 3 complaints. The typical CT6 run has 1.2.

Which CT6 years have the most complaints?

Per production run, 2017 is heaviest at 1.4 complaints per run and 2016 lightest at 1.

Does the CT6 get more complaints than the Kia K900?

No: 1.2 complaints per production run for the CT6 against 1.9 for the Kia K900.

How many CT6 complaints involve a crash?

6.7% of 75 reports, against 5.8% across all vehicles; 0 involved a fire.

Complaint and recall records from NHTSA, grouped by VIN production run (characters 1–11). Per-run rates computed by ForCar. Federal data covers safety only — title, odometer and insurance history are not included. Last updated Nov 2026. — ForCar Reviewed by , founder of ForCar.
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