69,000 mile oil change I was told i needed to spend thousands of dollars on repairing an oil leak b/c my Cam carrier is leaking. Cadillac has a know issue with this repair and refuses to stand behind it's product. Numerous complaints already on forums and yet they charge thousands to fix. A top name brand that can't produce a vehicle past 69000 miles without a major issue. I wanted to make it known about the ongoing issue by Cadillac. So sad.
Engine & cooling
2020 Cadillac CT4 Engine problems
Owners have filed 3 complaints about the 2020 Cadillac CT4's engine & cooling with NHTSA - 38% of all its complaints, most recently on August 25, 2026. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 3
- Recalls
- 0
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Engine complaints
The vehicle shudders and loses power when accelerating fast. My wife almost got hit when she pulled out in traffic the car stalled out. It is due to the cylinder deactivation (afm).
The contact owns a 2020 Cadillac CT4. The contact stated while driving 70 MPH, on several occasions, the vehicle failed to accelerate, hesitated, and then stalled. The vehicle was towed on three occasions to the local dealer, who was unable to determine the cause of the failure. There were no DTC codes retrieved. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 45,000.
Cadillac CT4 engine complaints by year
CT4 engine problems, every yearSource: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data