2021 Cadillac CT4 problems
Light NHTSA footprint — 7 owner complaints. Either a clean record or thin data; we'll show what's there.
The 2021 Cadillac CT4 has 7 NHTSA owner complaints on file (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2020 CT4 | 6 | 0 |
| 2021 CT4 (this page) | 7 | 0 |
| 2022 CT4 | 6 | 1 |
| 2023 CT4 | 3 | 0 |
| 2024 CT4 | 7 | 0 |
Limited NHTSA data — only 7 complaints on file. The score reflects what's reported, but a small sample skews easily.
Only 7 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data.
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
What owners are saying recent NHTSA-filed complaints · verbatim
There is a known issue with hesitation and hard shifting on my vehicle. According to the gm bulletin that was released I believe in may of 25 my year, make and model has a known issue where the transmission control valve may stick or wear causing jerking and shifting issues and…
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…
Engine and transmission for the second time in 90 days apart. Supposedly be a new part. I don’t think so.
valve body failed and was supposedly repaired. I had the car 1 day and valve body failed again. My car has been in the shop since November 4, 2024 with no estimated time of repair because no parts are available. I was told they would replace the transmission. That has not…
Common questions
Is the 2021 Cadillac CT4 reliable?
Limited NHTSA data. Only 7 owner complaints have been filed for the 2021 Cadillac CT4, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2021 Cadillac CT4?
Only 7 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data. We don't issue a buy/avoid verdict on the 2021 Cadillac CT4 without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What should I check before buying a used 2021 Cadillac CT4?
There isn't enough NHTSA complaint data on the 2021 Cadillac CT4 to flag a standout failure pattern. Run the VIN for open recalls — those are free to fix regardless of warranty — get a standard pre-purchase inspection, and ask the seller for service records.
Is the 2021 Cadillac CT4 a good used car to buy?
Hard to say from federal data alone — only 7 owner complaints have been filed. Lean on the recall list above, a pre-purchase inspection, and a vehicle-history report on the specific VIN. Our data tells you what the model is known for; a history report tells you what that exact car has been through.
What's the most common problem on the 2021 Cadillac CT4?
No problem area has crossed our reporting threshold yet, which is a good sign for this vehicle.
What's the most expensive thing that goes wrong?
Major repair items haven't been flagged often enough on this vehicle to single one out.
How do I check if my Cadillac CT4 has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 Cadillac CT4?
Hard to say from NHTSA data alone with only 7 complaints on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.