2020 Cadillac CT4 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
8 owner complaints analyzed
4 distinct recall campaigns
24,000 mi median reported failure mileage
Scope: 2020 model year. Data snapshot: . 2 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Engine is the most frequently named component, appearing in 3 of 8 complaints (37.5%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 3 | 37.5% |
| Engine operation | 2 | 25.0% |
| Transmission and shifting | 1 | 12.5% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Engine | 3 |
| Power Train | 2 |
| Service Brakes | 2 |
| Air Bags | 1 |
| Fuel/Propulsion System | 1 |
| Unknown Or Other | 1 |
Engine: 3; Power Train: 2; Service Brakes: 2; Air Bags: 1; Fuel/Propulsion System: 1; Unknown Or Other: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 1 |
| 25,000 to 49,999 | 1 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 1; 25,000 to 49,999: 1; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (1). 6 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2021 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 5 |
2021: 1; 2024: 1; 2025: 1; 2026: 5
Pattern summary
Engine leads the component reports. Braking behavior appears in 3 complaint narratives. Engine operation appears in 2 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11664086 · 2025-05-31 (May 31, 2025)
Right rear brake light is out. There is a lot of moisture in the tail light causing the lights to corrode and go out
Owner-reported narrative. Look up ODI 11664086 at NHTSA ↗
Owner report 11745985 · 2026-06-23 (June 23, 2026)
The electronic brake control module, break retainer, brake master cylinder and brake valve all failed. I was driving to lunch and coming down a hill when multiple warning lights turned on as I pressed the brakes. I had almost no braking power as I approached a stop sign that lets you enter a highway almost causing me to drive through the stop sign and into cross traffic. I had enough bearings to down shift it and slow it down enough to stop. If I have went through the stop sign, it could have been a fatal accident. The vehicle is at a GM dealer…
Owner-reported narrative. Look up ODI 11745985 at NHTSA ↗
Owner report 11592549 · 2024-06-05 (June 5, 2024)
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.
Owner-reported narrative. 45,000 miles reported. Look up ODI 11592549 at NHTSA ↗
Owner report 11742821 · 2026-06-08 (June 8, 2026)
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).
Owner-reported narrative. Look up ODI 11742821 at NHTSA ↗
Owner report 11752429 · 2026-07-23 (July 23, 2026)
I had two incidents with the Cadillac CT-4 in February and then again in April of 2026 of driving on I-75 at a highway speed of about 70 MPH when the vehicle suddenly downshifted and the engine revving at at very high RPM. The vehicle slowed down suddenly and it felt for a moment that I could not control the speed. The check engine light was on and the diagnostic indicated a transmission/engineer problem and to take in to service within a day. Both incidents in February and April felt the same. Both times I pulled over to the shoulder to sh…
Owner-reported narrative. Look up ODI 11752429 at NHTSA ↗