CADILLAC CT6 PLUG-IN HYBRID · model year

2017 CADILLAC CT6 PLUG-IN HYBRID

11 NHTSA complaints for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2017CADILLACCT6 PLUG-IN HYBRID carries 11 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2017 CT6 PLUG-IN HYBRID is power train with 7 filings, followed by electrical system (1) and visibility/wiper (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 10 investigation files overlapping the 2017 CT6 PLUG-IN HYBRID, and 1 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

11
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths

Total Complaints

11 filings

Crashes Reported

0 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
POWER TRAIN7
ELECTRICAL SYSTEM1
VISIBILITY/WIPER1
STRUCTURE:BODY1
ENGINE1

Recent Complaints

20200304ENGINE

ON MORE THAN THREE OCCASIONS, THIS VEHICLE HAS LOST SUBSTANTIAL OR ALL PROPULSION DUE TO ENGINEERING DESIGN DEFECTS WITH THE GAS/HYBRID ELECTRIC TRANSMISSION SYSTEM. ALL BUT ONE OF THESE SITUATIONS OCCURRED ON A HIGH SPEED FREEWAY CAUSING POTENTIALLY LIFE THREATENING CONDITIONS WHEN THE VEHICLE SUBSTANTIALLY SLOWED OR STOPPED. THIS IS A KNOWN ISSUE AS IS EVIDENCED BY OTHER OWNERS OF THIS VEHICLE REPORTING THE SAME ISSUE AND THE MANUFACTURER FAILING TO HAVE A VIABLE PERMANENT REMEDY. AS OF TODAY'S DATE, 3/4/2020, THE VEHICLE HAS BEEN IN THE SHOP FOR THE PAST 62 OF 92 DAYS AND IS STILL AWAITING REPAIRS. THIS FIRST OCCURRED WHEN THE VEHICLE HAD LESS THAN 10,000 MILES.

Mileage: 9,759

20200304POWER TRAIN

ON MORE THAN THREE OCCASIONS, THIS VEHICLE HAS LOST SUBSTANTIAL OR ALL PROPULSION DUE TO ENGINEERING DESIGN DEFECTS WITH THE GAS/HYBRID ELECTRIC TRANSMISSION SYSTEM. ALL BUT ONE OF THESE SITUATIONS OCCURRED ON A HIGH SPEED FREEWAY CAUSING POTENTIALLY LIFE THREATENING CONDITIONS WHEN THE VEHICLE SUBSTANTIALLY SLOWED OR STOPPED. THIS IS A KNOWN ISSUE AS IS EVIDENCED BY OTHER OWNERS OF THIS VEHICLE REPORTING THE SAME ISSUE AND THE MANUFACTURER FAILING TO HAVE A VIABLE PERMANENT REMEDY. AS OF TODAY'S DATE, 3/4/2020, THE VEHICLE HAS BEEN IN THE SHOP FOR THE PAST 62 OF 92 DAYS AND IS STILL AWAITING REPAIRS. THIS FIRST OCCURRED WHEN THE VEHICLE HAD LESS THAN 10,000 MILES.

Mileage: 9,759

20191021POWER TRAIN

TL* THE CONTACT OWNS A 2017 CADILLAC CT6. WHEN THE VEHICLE WAS STARTED, IT LURCHED FORWARD WITHOUT WARNING. THE FAILURE OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO GOLD COAST CADILLAC (732-709-2168, LOCATED AT 2123 STATE ROUTE 35, OAKHURST, NJ 07755), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT BACK TO THE SAME DEALER. THE DEALER PROVIDED A TECHNICAL SERVICE BULLETIN (DOCUMENT ID NUMBER: 4605342 - 16-NA-361: INFORMATION ON TRANSMISSION HARSH 1-2 SHIFT UPON FIRST STARTUP/SHIFT OF THE DAY UNDER LIGHT THROTTLE (JUL. 21, 2017)). THE CONTACT WAS INFORMED THAT THERE WAS NO REMEDY FOR THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 1,700. *LN*JB *JS *BF CONSUMER STATED VEHICLE LURCHED FORWARD AGAIN ON 12/18/19. CAR WAS TAKEN IN FOR SERVICE ON 10/2019.*JB

Mileage: 1,700

20190914POWER TRAIN

I PURCHASED THE USED 2017 CADILLAC CT6 IN MARCH 2019 WITH 24,192 MILES. IT WAS A CERTIFIED PRE -OWNED CAR BY THE DEALER. ADDITIONALLY I PURCHASED A CPO PROTECTION PLUS PROTECTION PLAN WITH THE CAR. I AM EXPERIENCING PROBLEMS WITH THE TRANSMISSION. DURING ACCELERATION AND DECELERATING THE CAR FEELS A HESITATION FOLLOWED BY A SIGNIFICANT SHAKE, SHUDDER, JERK, CLUNK OR HARD SHIFT. THE AUTO START STOP FEATURE IS NOT WORKING CORRECTLY. WHEN YOU COME TO A LIGHT THE ENGINE WILL TURN OFF AND WHEN IT RESTARTS IT WILL JERK INTO GEAR SO VIOLENT THAT IT FEELS AS THOUGH THE VEHICLE HAS BEEN HIT FROM BEHIND. ADDITIONALLY AT 35, 45, AND 55 MILES PRE HOUR THE VEHICLE MAKES A WHINING NOISE EITHER FROM THE TRANSMISSION OR DIFFERENTIAL. I HAVE HAD THE CAR IN FOR REPAIRS FOUR TIMES AT THE DEALERSHIP WITH NO SUCCESS ON CORRECTING THE PROBLEMS.

Mileage: 24,192

20190826POWER TRAIN

HARD SHIFTS IN LOW SPEEDS, INTENSE VIBRATION , SHUDDER THROUGHOUT DRIVING SPEED. CADILLAC DEALER SAID IT IS TORGUE CONVERTER ISSUE, CAR TRANSMISSION NEEDS TO BE FLUID EXCHANGED FOR $800.

Mileage: 83,000

20181203VISIBILITY/WIPER

TL* THE CONTACT OWNS A 2017 CADILLAC CT6. DUE TO THE CHANGES IN THE WEATHER, THE REAR WINDOW HAD A MARBLEIZED HAZE COVER, WHICH MADE VISIBILITY OUT OF THE WINDOW EXTREMELY DIFFICULT. THE VEHICLE WAS TAKEN TO SCHOOLEY CADILLAC (2101 45TH ST, WEST PALM BEACH, FL), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, BUT NO SOLUTION WAS OFFERED. THE FAILURE MILEAGE WAS 0. *TT VEHICLE PURCHASE DATE SHOULD BE ON OR BEFORE INCIDENT DATE. *JB

20181203STRUCTURE:BODY

TL* THE CONTACT OWNS A 2017 CADILLAC CT6. DUE TO THE CHANGES IN THE WEATHER, THE REAR WINDOW HAD A MARBLEIZED HAZE COVER, WHICH MADE VISIBILITY OUT OF THE WINDOW EXTREMELY DIFFICULT. THE VEHICLE WAS TAKEN TO SCHOOLEY CADILLAC (2101 45TH ST, WEST PALM BEACH, FL), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, BUT NO SOLUTION WAS OFFERED. THE FAILURE MILEAGE WAS 0. *TT VEHICLE PURCHASE DATE SHOULD BE ON OR BEFORE INCIDENT DATE. *JB

20180627POWER TRAIN

TRANSMISSION HAS A SIGNIFICATION CLUNK/HESITATION/DELAY SHIFTING UP FROM 1ST-2ND GEAR AND DOWN FROM 2ND-1ST GEAR. IN THE UPSHIFT, THE CAR VIOLENTLY LUNGES FORWARD ONCE THE ACCELERATION REV FROM THE PUSH OF THE PEDAL CATCHES UP WITH THE GEAR SHIFTING, NO MATTER HOW DELICATELY YOU MIGHT PUSH THE PEDAL. FEELS LIKE THE VEHICLE HAS BEEN HIT FROM BEHIND ONCE IT CATCHES. IN THE DOWNSHIFT, UPON BRAKING TO COME TO A STOP, THE CAR PULSATES AND LUNGES FORWARD AS WELL WHICH HAS CAUSED ME TO NEARLY HIT THE CAR IN FRONT OF ME ON SEVERAL OCCASIONS AND IF NO CAR IS IN FRONT OF ME IT HAS CAUSED ME TO CREEP OUT INTO THE INTERSECTION A BIT. THIS HAS HAPPENED REGULARLY SINCE MY ACQUISITION OF THE VEHICLE IN EARLY APRIL 2018 AND THE DEALER HAS REVIEWED AND ADVISED THAT IT SHIFTS JUST FINE.

Mileage: 51,000

20180118POWER TRAIN

I HAVE HAD ISSUES WITH MY VEHICLE THAT INVOLVES HARD SHIFTING AT TIMES AND ALSO, THE VEHICLE SOMETIMES WILL LURCH QUITE ABRUPTLY. IT ACTUALLY FEELS AS IF THE VEHICLE WAS REAR ENDED. I HAVE TAKEN THE VEHICLE TO THE DEALERSHIP ON 4 OCCASIONS AND THEY WERE ONLY ABLE TO "REPLICATE" THE PROBLEM ONE TIME. THIS HARD SHIFT/LURCHING OCCURS USUALLY WHEN AT A STAND STILL AND, ONCE YOU REMOVE YOUR FOOT FROM THE BRAKE, VEHICLE MAY SHIFT HARD. IT DOESN'T MATTE WHERE I AM; WHETHER ON STREETS OR ON THE FREEWAY. IF VEHICLE IS STOPPED, THEN THIS HAPPENS ON OCCASION. IT DOESN'T MATTER IF I AM USING THE "AUTOHOLD" FEATURE OR NOT BUT IT DOESN'T SEEM TO OCCUR AS OFTEN IF I AM USING THE "SPORT" MODE WHEN DRIVING. THE LAST TIME THIS EVENT OCCURRED, THE DEALERSHIP KEPT THE CAR FOR 3 DAYS AND CLAIMED THAT THEY COULD NOT REPLICATE THE PROBLEM, BUT, I DROVE AWAY AND THE ISSUE OCCURRED WITH ME LESS THAN 2 MILES FROM THE DEALERSHIP. I HAVE 2 GRANDSONS THAT I "TAXI" AROUND AND THEY HAVE BOTH FELT THIS PROBLEM

Mileage: 7,964

20171003POWER TRAIN

VEHICLE'S TRANSMISSION LURCHES AND SLIPS OUT OF GEAR IN COAST CONDITIONS; DURING TURNS AND IN INTERSECTIONS.

Mileage: 2,500

20170829ELECTRICAL SYSTEM

LANE DEPARTURE WARNING ALERT DOES NOT WORK

Mileage: 2,000

Compare 2017CADILLACCT6 PLUG-IN HYBRID to Similar Vehicles

NHTSA Investigations 1 Open

View all investigations

Frequently Asked Questions

How many complaints does the 2017 CADILLAC CT6 PLUG-IN HYBRID have?
The 2017 CADILLAC CT6 PLUG-IN HYBRID has 11 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2017 CADILLAC CT6 PLUG-IN HYBRID?
The most-complained component for the 2017 CADILLAC CT6 PLUG-IN HYBRID is POWER TRAIN with 7 complaints. Other frequently reported areas include ELECTRICAL SYSTEM and VISIBILITY/WIPER.
Is the 2017 CADILLAC CT6 PLUG-IN HYBRID safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.