2021 Cadillac CT4 Fuel system Problems
- Complaints
- 2about this part
- Share
- 29%of 7 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2021 Cadillac CT4, 29% of the 7 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While driving at highway speeds on the freeway in my 2021 Cadillac CT4-V, the vehicle experienced a sudden, catastrophic loss of propulsion. Without warning, the transmission dropped out of gear as if it were in neutral. I completely lost the ability to accelerate, creating an immediate, life-threatening hazard as I was left stranded and blocking high-speed freeway traffic. Only after the mechanical failure occurred did the check engine light illuminate. The vehicle was towed to Cadillac Dealership. …”
NHTSA complaint #11747192, filed 2026-06Related service bulletins
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- 11011885Dec 14, 2024This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 2 | 29% |
| 2020 | 1 | 13% |
Other parts of the 2021 Cadillac CT4
3 complaintsElectrical system
1 complaintsForward collision avoidance
1 complaintsSteering
1 complaintsSuspension
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2021 Cadillac CT4
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology