2021 Cadillac CT5 Fuel system Problems
- Complaints
- 1about this part
- Share
- 3%of 30 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the fuel system of the 2021 Cadillac CT5, 3% of the 30 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.
“Car interior smelled like gas when the car is started. but seemed to clear while driving. Found that the Fuel hose between the pipe and the fuel intake was leaking when the car initially started. You could smell the odor when the hood was raised. This is the Pipe and Hose that you need the Fuel clamp removal tool for that is located in the rear center of the engine just in front of the firewall. The leak was about 3 inches from then end where it connected to the engine. Currently I have a temporary repair on it (Fuel coupling) where the hole was. Note, This car is out of warranty. …”
NHTSA complaint #11680204, filed 2025-08Related 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…
- 11007095Aug 7, 2024This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
Fuel system: other model years
Other parts of the 2021 Cadillac CT5
13 complaintsBody and structure
7 complaintsOther or unknown
4 complaintsTransmission and drivetrain
4 complaintsAir bags
2 complaintsForward collision avoidance
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBrakes
1 complaintsEngine
1 complaintsExterior lighting
1 complaintsSeat belts
1 complaintsSteering
1 complaints
← All problems reported for the 2021 Cadillac CT5
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