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2018 Cadillac CT6Problems, recalls & complaints

NHTSA has logged 9 owner complaints about the 2018 Cadillac CT6, most often about the engine. It has no vehicle safety recalls on record.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls0None on recordOwner complaints90 with a crash, fire or injuryTypical failure mileage22kEngine, median miles

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through August 7, 2026. Updated daily.

Complaints by system

Where the 2018 Cadillac CT6 has problems

9 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine30
Power train30
Fuel/propulsion system20
Steering20
Suspension10
Service brakes10
Structure10
Forward collision avoidance10
Exterior lighting10
1 other systems10

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

0 recalls

2018 Cadillac CT6 recalls and how many were fixed

No vehicle safety recalls are on record for this model year.

Best & worst years

2018 vs. every other CT6 year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the CT6 median. How we score

'16'17'18'19'20
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
NHTSA crash tests

2018 Cadillac CT6 safety ratings

2018 Cadillac CT6 4DR AWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.

  • Stability control: Standard
  • Forward collision warning: Optional
  • Lane departure warning: Optional
In owners' words

What CT6 owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are removed.

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.
Complaint 11745961 · Jun 23, 2026
The brake makes a rattling and metal grinding sound, the dealership said nothing is wrong with the brakes, still problematic. The transmission shifts too hard. Dealer said nothing wrong. Yet cat kicks too hard.
Complaint 11508253 · Feb 21, 2023
MY CADILLAC CT6 (2018) QUIT WORKING WHILE ON THE EXPRESSWAY. I WAS IN THE MIDDLE OF NO WHERE, IN GEORGIA. THIS MADE FOR A VERY DANGEROUS SITUATION AS THE CAR SUDDENLY LOST ALL POWER GOING TO THE WHEELS WHILE DRIVING AT APPROX. 75 MPH. I WAS BARELY ABLE TO GET AROUND TRAFFIC TO BE ABLE TO PULL OVER…
Complaint 11389316 · Jan 21, 2021 · 22,000 miles

Own a 2018 CT6?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.