2018 Cadillac CT6 Owner Complaints
Complaint Summary
The 2018 Cadillac CT6 has 12 reported complaints.
- Top issues involve engine and steering.
Powertrain: Plug-in Hybrid (PHEV).
Reliability Score
Reliability Score
Based on 12 complaints
Most Frequent Issues
ENGINE
2 16.7%
STEERING
2 16.7%
FUEL/PROPULSION SYSTEM
1 8.3%
POWER TRAIN
1 8.3%
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
1 8.3%
Quick Insights
The top category is ENGINE, accounting for 16.7% of all complaints.
Owners have reported issues across 10 distinct vehicle systems.
Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.
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What owners keep reporting on the 2018 Cadillac CT6
The 2018 Cadillac CT6 has 12 owner complaints in this dataset. ENGINE is the most common complaint category, representing about 17% of the reports shown here.
Most common complaint categories
The top complaint groups for the 2018 Cadillac CT6 are ENGINE (2), STEERING (2), FUEL/PROPULSION SYSTEM (1).
Are these complaints a serious red flag?
Potentially. 7 complaint reports involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.
What should buyers inspect on a used 2018 Cadillac CT6?
Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.
Detailed Complaint Log
Showing 10 of 10 systems
ENGINE
2 Reports17% of totalPreviewing the first 2 complaint summaries.
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 AS THERE WAS 0 POWER. WHEN THE TOW TRUCK FROM CADILLAC ARRIVED WE WERE TOLD WE WERE NOT ALLOWED TO RIDE IN THE TRUCK BECAUSE OF COVID. WE WERE MADE SIT IN THE RAIN IN 40 DEGREE WEATHER WHILE I SPOKE WITH MY HOME CADILLAC DEALER AS WELL AS THE NEAREST TO WHERE I WAS. BOTH DEALERS WERE EXTREMELY UNHELPFUL, MY CAR IS STILL UNDER FACTORY WARRANTY AND WAS JUST IN FOR TRANSMISSION WORK ABOUT A WEEK PRIOR (I'VE TAKEN THE CAR IN THREE TIMES FOR TRANSMISSION ISSUES AND IT STILL HAS SOMETHING WRONG WITH IT. I WAS TOLD BY BOTH CADILLAC DEALERS THAT THEY WOULD NOT HELP BECAUSE THEY NEEDED TO 'DIAGNOSE' THE CAR AND COULDN'T UNTIL FIVE DAYS LATER. I WAS OFFERED AN UBER RIDE IN A CITY THAT HAD 0 ZERO UBER, TAXI OR LIFT SERVICES. I WAS HUNG UP ON BY THESE PEOPLE, THEY WERE RUDE AND THIS WAS ON CHRISTMAS EVE. I HAD TO WALK TO A CAR RENTAL COMPANY AND PAY OVER $400 DOLLARS SO I COULD SPEND CHRISTMAS WITH MY FAMILY.
1/21/2021
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.
2/21/2023
STEERING
2 Reports17% of totalPreviewing the first 2 complaint summaries.
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 DRIFTED RIGHT . AS THE CAR CAME UPON THE NEW WHITE LINE THE CAR ABOUT CENTERED IT. THE CAR TURNED HARD LEFT, AND TURNED OFF SUPER CRUISE. FORTUNATELY, I WAS ABLE TO GRAB THE STEERING WHEEL AND CORRECT THE TURN. WE DID NOT CRASH, BUT IT WAS MOST UNSETTLING.
3/3/2021
Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!
2/15/2024
FUEL/PROPULSION SYSTEM
1 Report8% of totalPreviewing the first 1 complaint summaries.
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 AS THERE WAS 0 POWER. WHEN THE TOW TRUCK FROM CADILLAC ARRIVED WE WERE TOLD WE WERE NOT ALLOWED TO RIDE IN THE TRUCK BECAUSE OF COVID. WE WERE MADE SIT IN THE RAIN IN 40 DEGREE WEATHER WHILE I SPOKE WITH MY HOME CADILLAC DEALER AS WELL AS THE NEAREST TO WHERE I WAS. BOTH DEALERS WERE EXTREMELY UNHELPFUL, MY CAR IS STILL UNDER FACTORY WARRANTY AND WAS JUST IN FOR TRANSMISSION WORK ABOUT A WEEK PRIOR (I'VE TAKEN THE CAR IN THREE TIMES FOR TRANSMISSION ISSUES AND IT STILL HAS SOMETHING WRONG WITH IT. I WAS TOLD BY BOTH CADILLAC DEALERS THAT THEY WOULD NOT HELP BECAUSE THEY NEEDED TO 'DIAGNOSE' THE CAR AND COULDN'T UNTIL FIVE DAYS LATER. I WAS OFFERED AN UBER RIDE IN A CITY THAT HAD 0 ZERO UBER, TAXI OR LIFT SERVICES. I WAS HUNG UP ON BY THESE PEOPLE, THEY WERE RUDE AND THIS WAS ON CHRISTMAS EVE. I HAD TO WALK TO A CAR RENTAL COMPANY AND PAY OVER $400 DOLLARS SO I COULD SPEND CHRISTMAS WITH MY FAMILY.
1/21/2021
POWER TRAIN
1 Report8% of totalPreviewing the first 1 complaint summaries.
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 AS THERE WAS 0 POWER. WHEN THE TOW TRUCK FROM CADILLAC ARRIVED WE WERE TOLD WE WERE NOT ALLOWED TO RIDE IN THE TRUCK BECAUSE OF COVID. WE WERE MADE SIT IN THE RAIN IN 40 DEGREE WEATHER WHILE I SPOKE WITH MY HOME CADILLAC DEALER AS WELL AS THE NEAREST TO WHERE I WAS. BOTH DEALERS WERE EXTREMELY UNHELPFUL, MY CAR IS STILL UNDER FACTORY WARRANTY AND WAS JUST IN FOR TRANSMISSION WORK ABOUT A WEEK PRIOR (I'VE TAKEN THE CAR IN THREE TIMES FOR TRANSMISSION ISSUES AND IT STILL HAS SOMETHING WRONG WITH IT. I WAS TOLD BY BOTH CADILLAC DEALERS THAT THEY WOULD NOT HELP BECAUSE THEY NEEDED TO 'DIAGNOSE' THE CAR AND COULDN'T UNTIL FIVE DAYS LATER. I WAS OFFERED AN UBER RIDE IN A CITY THAT HAD 0 ZERO UBER, TAXI OR LIFT SERVICES. I WAS HUNG UP ON BY THESE PEOPLE, THEY WERE RUDE AND THIS WAS ON CHRISTMAS EVE. I HAD TO WALK TO A CAR RENTAL COMPANY AND PAY OVER $400 DOLLARS SO I COULD SPEND CHRISTMAS WITH MY FAMILY.
1/21/2021
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
1 Report8% of totalPreviewing the first 1 complaint summaries.
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 DRIFTED RIGHT . AS THE CAR CAME UPON THE NEW WHITE LINE THE CAR ABOUT CENTERED IT. THE CAR TURNED HARD LEFT, AND TURNED OFF SUPER CRUISE. FORTUNATELY, I WAS ABLE TO GRAB THE STEERING WHEEL AND CORRECT THE TURN. WE DID NOT CRASH, BUT IT WAS MOST UNSETTLING.
3/3/2021
LANE DEPARTURE: ASSIST
1 Report8% of totalPreviewing the first 1 complaint summaries.
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 DRIFTED RIGHT . AS THE CAR CAME UPON THE NEW WHITE LINE THE CAR ABOUT CENTERED IT. THE CAR TURNED HARD LEFT, AND TURNED OFF SUPER CRUISE. FORTUNATELY, I WAS ABLE TO GRAB THE STEERING WHEEL AND CORRECT THE TURN. WE DID NOT CRASH, BUT IT WAS MOST UNSETTLING.
3/3/2021
SERVICE BRAKES
1 Report8% of totalPreviewing the first 1 complaint summaries.
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.
2/21/2023
EXTERIOR LIGHTING
1 Report8% of totalPreviewing the first 1 complaint summaries.
MY DRIVER FRONT HEAD LIGHT IS PARTLY NOT WORKING. I BELEIVE IT IS AN LED LIGHT AND THE FACT THAT IT NO LONGER WORKS IS NOT WHAT I EXPECTED FROM LED, IT SHOULD LAST MUCH MUCH LONGER THAN 5 YEARS; AFTER ALL IT IS A CADILLAC AND IT SHOULDN'T HAVE HAPPENED. I REQUESTED CADILLAC CORPORATE TO ASSIST ME WITH THIS AND ALL THEY WOULD DO FOR ME IS GIVE ME A $250.00 CREDIT TOWARDS THE REPAIR THAT IS APROX. $1,800.00 THIS HEAD LIGHT IS DEFECTIVE AND THEY SHOULD DO GOOD BY ME, THIS IS MY 5TH. CAR WITH THEM. THANK YOU FOR YOUR HELP [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
2/21/2023
STRUCTURE:BODY
1 Report8% of totalPreviewing the first 1 complaint summaries.
Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!
2/15/2024
SUSPENSION
1 Report8% of totalPreviewing the first 1 complaint summaries.
Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!
2/15/2024
Data and Methodology
Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.
What are the most common owner complaints for the 2018 Cadillac CT6?
Are complaints about the 2018 Cadillac CT6 a serious warning sign?
How should buyers use complaint data for the 2018 Cadillac CT6?
Are complaints about the 2018 Cadillac CT6 severe?
Complaint list entries are sourced from owner-submitted NHTSA ODI records.
Cadillac CT6: How should complaint data influence buying decisions?
Carfocal links complaint data directly to recall and maintenance routes for the same model year.
- Complaint entries
- 12
- Top-topic view
- 5 grouped topics shown
- Primary source
- NHTSA ODI owner complaint records
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