AutoUtility currently tracks 12 official NHTSA owner defect complaints for the 2018 Cadillac CT6. Powertrain & Transmission issues are the most frequently reported category, appearing in 4 complaints (33.3% of submitted records). Zero crashes, fires, injury reports, or fatality reports are cited across these complaint records.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
4 owner complaints submitted to NHTSA ODI for this subsystem.
3 owner complaints submitted to NHTSA ODI for this subsystem.
3 owner complaints submitted to NHTSA ODI for this subsystem.
2 owner complaints submitted to NHTSA ODI for this subsystem.
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"When vehicle was purchased new there was a slight bearing wear noise at the front driver side, which grew louder with years. Noise synchronized with tire rolling rpm. Replacing (my self) front trans axle, the brake pads, shaving rotors, & wheel hub bearing did not fix noise. Next; Dealer shop..."
"During refueling the gas station pumping nozzle would shut off indicating a full gasoline fuel tank; but, the dash board fuel gage indicated the fuel was not full. Had to dribble in fuel to fill. Dealer Mechanic found: Crash roll over gasoline vent safety valve was stuck in the crashed roll over..."
"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."
"Front differential case ripped in half and separated from the ring gear. The broken chunk of differential case and pinion was still attached to the driveshaft while coming to an abrupt stop. Damage done within driveshaft tunnel. No warning, no vibration, no cause for concern, just catastrophic..."
"Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!"
Reported defect complaint volume across sibling model years (2016–2020)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2016 Cadillac CT6 | 11 | 3 | 3 | View 2016 Problems → |
| 2017 Cadillac CT6 | 26 | 0 | 2 | View 2017 Problems → |
| 2018 Cadillac CT6 Current Page | 12 | 0 | 2 | Current |
| 2019 Cadillac CT6 | 16 | 0 | 4 | View 2019 Problems → |
| 2020 Cadillac CT6 | 11 | 2 | 2 | View 2020 Problems → |
Complete distribution of consumer defect reports across all 10 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Powertrain NHTSA category: POWER TRAIN | 3 | 0 | 0 | 0 | 0 |
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| Engine NHTSA category: ENGINE | 1 | 0 | 0 | 0 | 0 |
| EXTERIOR LIGHTING | 1 | 0 | 0 | 0 | 0 |
| Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| SERVICE BRAKES,ENGINE | 1 | 0 | 0 | 0 | 0 |
| STEERING,ELECTRONIC STABILITY CONTROL (ESC),ENGINE | 1 | 0 | 0 | 0 | 0 |
| STEERING,FORWARD COLLISION AVOIDANCE,LANE DEPARTURE | 1 | 0 | 0 | 0 | 0 |
| STEERING,SUSPENSION,STRUCTURE | 1 | 0 | 0 | 0 | 0 |
Cross-reference safety recalls, crash test safety ratings, and EPA fuel economy for this model year
Key performance indicators, EPA fuel economy specs, powertrain variants, and summary ratings.
Official recall campaigns, safety defect descriptions, and manufacturer free remedy instructions.
NHTSA 5-Star NCAP crash test results, driver assistance systems, and rollover resistance ratings.
EPA fuel economy ratings, electric range, and annual energy cost benchmarks.
Direct, deterministic answers synthesized from verified United States government databases for the 2018 Cadillac CT6
In official NHTSA consumer records, the most frequently cited issue area for the 2018 Cadillac CT6 is Powertrain & Transmission, appearing in 4 records (33.3% of submitted filings).
Secondary reported categories include Engine & Cooling (3) and Steering System (3).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 12 consumer defect complaints and 2 safety recall campaigns for the 2018 Cadillac CT6.
Reviewing documented component complaint distributions, recall remedy notices, and active federal investigations provides an objective, evidence-based view of the vehicle's historical safety and defect record.
Consumer complaint records on file with NHTSA for the 2018 Cadillac CT6 cite zero crashes, zero fires, and zero injuries.
Incident entries represent consumer descriptions at the time of submission to federal authorities and do not establish mechanical causation or legal liability.
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database under 49 CFR Part 576.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.