Model year record
2018 Cadillac CT6 recalls & problems
The 2018 Cadillac CT6 has no safety recalls on file with NHTSA, and 9 owner complaints. The most-reported problem area is engine (3 complaints).
Safety recalls
No safety recalls have been filed for the 2018 Cadillac CT6.
Recall repairs are free at any authorised dealer. A recall listed here may already have been fixed on a particular car: enter its 17-character VIN at nhtsa.gov/recalls to see open recalls.
Crash test ratings
2018 Cadillac CT6 4DR AWD
| Frontal crash | Not Rated |
|---|---|
| Side crash | Not Rated |
| Rollover | Not Rated |
Forward collision warning: Optional · Lane departure warning: Optional
2018 Cadillac CT6 4DR RWD
| Frontal crash | Not Rated |
|---|---|
| Side crash | Not Rated |
| Rollover | Not Rated |
Forward collision warning: Optional · Lane departure warning: Optional
2018 Cadillac CT6 PHEV 4DR AWD
| Frontal crash | Not Rated |
|---|---|
| Side crash | Not Rated |
| Rollover | Not Rated |
Forward collision warning: Standard · Lane departure warning: Standard
NHTSA 5-Star Safety Ratings (New Car Assessment Program). Ratings are comparable only between vehicles of similar size and weight, and ratings from 2011 on use tougher tests than earlier years. Photos: NHTSA.
Fuel economy
CT6
| City / highway | 22 / 30 mpg |
|---|---|
| Fuel | Premium Gasoline |
2 L · 4 cyl · Automatic (S8) · Rear-Wheel Drive · about $3,300/year to fuel
CT6 Plug-In Plug-in Hybrid
| City / highway | 23 / 29 mpg |
|---|---|
| Electric range | 31 mi |
| On electricity | 62 MPGe · 54 kWh/100 mi |
| Fuel | Premium Gasoline |
2 L · 4 cyl · Automatic (variable gear ratios) · Rear-Wheel Drive · about $3,300/year to fuel
CT6 AWD
| City / highway | 18 / 26 mpg |
|---|---|
| Fuel | Premium Gasoline |
3 L · 6 cyl · Automatic (S8) · All-Wheel Drive · about $3,900/year to fuel
CT6 AWD
| City / highway | 18 / 27 mpg |
|---|---|
| Fuel | Regular Gasoline |
3.6 L · 6 cyl · Automatic (S8) · All-Wheel Drive · about $3,200/year to fuel
EPA estimates from fueleconomy.gov for each engine and transmission sold. Annual cost is the EPA's estimate for 15,000 miles a year at its current fuel and electricity price assumptions. Your results will vary.
What owners report
| Problem area | Complaints | Typical mileage* |
|---|---|---|
| Engine | 3 | — |
| Power train | 3 | — |
| Fuel/propulsion system | 2 | — |
| Steering | 2 | — |
| Forward collision avoidanceAdaptive cruise control | 1 | — |
| Lane departureAssist | 1 | — |
| Service brakes | 1 | — |
| Exterior lighting | 1 | — |
| StructureBody | 1 | — |
| Suspension | 1 | — |
*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Recent owner complaints
- Power train
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 reported that the AWD front transfer case (differential) had a bad bearing AND that this was a common problem with the model car. $1600 repair bill.
- Fuel/propulsion system
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 cut off state. No gas tank ventilation. This caused back pressure in car gasoline tank to shut off gas station filler nozzle as though the car was full . Entire gas tank had to be replaced. Still under warranty.
- Engine
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.
- Power train
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 failure. Differential and propeller shaft were replaced by an independent mechanic. Cadillac has not been notified as of today, receipt for repair available upon request.
- Structure › Body
Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!
- Exterior lighting
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).
- Service brakes
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.
- Steering
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.
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.