2021 Cadillac Ct5 Problems

Severe Issues

The 2021 Cadillac CT5 shows a low-confidence pattern of electrical faults and structural complaints based on limited NHTSA data. Based on 19 real NHTSA owner complaints, with Electrical Faults the most reported area.

20206 years2022

Before you buy

This 2021 Cadillac Ct5 has 19 NHTSA complaints β€” top issue: Electrical Faults.

A model-year pattern isn't the car in front of you. Check this exact VIN for accidents, open recalls, odometer rollback, and salvage titles.

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19
Complaints
3
Crashes
β€”
Fires
2
Injuries
β€”
Fatalities
4
Recalls

2021 Cadillac Ct5 Fuel Economy

βœ“ EPA Official Data

EPA-rated fuel economy across 6 2021 Cadillac Ct5 trim configurations. The median figure is shown; range reflects all available trims.

19
MPG City
18–23 range
28
MPG Hwy
26–32 range
22
MPG Combined
21–26 range
404
g COβ‚‚/mile
Premium Gasoline
⚠️Costs $6,250 more than avg vehicle over 5 years

Source: EPA FuelEconomy.gov. Figures reflect EPA lab testing; real-world results vary by driving style, load, and conditions. 6 trims analysed.

2021 Cadillac Ct5 Safety Ratings

NHTSA 5-Star Program2 variants tested β€” showing 2021 Cadillac CT5 4 DR AWD

Official crash test results from the NHTSA 5-Star Safety Ratings program. Stars reflect government-conducted tests; higher is safer.

Overall

5/5

9.5% rollover risk

Frontal Crash

5/5

Side Crash

5/5

Rollover

5/5

9.5% probability

βœ“Stability Control: Standardβœ“Forward Collision Warning: Standardβ—‹Lane Departure Warning: Optional

Source: NHTSA 5-Star Safety Ratings. Ratings are based on government crash tests and may not reflect all trim levels.

Quick Answer

CADILLAC CT5 2021 has 19 NHTSA complaints and 4 recalls. Electrical faults lead with 7 reports, followed by structural problems (3). Source: NHTSA owner complaints and recall records.

2021 Cadillac Ct5 β€” key reliability facts
Make
Cadillac
Model
Ct5
Model year
2021
NHTSA owner complaints
19
Crash-related complaints
3
Safety recall campaigns
4
Top reported component
Electrical Faults
Reliability signal
Severe Issues
EPA MPG combined
22
EPA MPG city / highway
19 / 28
Fuel type
Premium Gasoline
NHTSA overall safety rating
5/5 stars
NHTSA frontal crash rating
5/5 stars
NHTSA side crash rating
5/5 stars
NHTSA rollover rating
5/5 stars
Electronic stability control
Standard

Common problems

Most common 2021 Cadillac Ct5 problems

Top owner-reported complaint areas and where they often appear.

#1
7
complaints

Electrical Faults

Crash-related:1
#2
3
complaints

Structural Problems

#3
2
complaints

Uncategorized Issues

Complaint patterns center on Electrical Faults, Structural Problems, Uncategorized Issues. Use these as a pre-purchase inspection guide, then verify recall and damage history on the specific VIN.

Buyer verdict

Should you buy a used 2021 Cadillac Ct5?

The 2021 CT5 may be worth considering if you find a well-maintained example, but the electrical complaint pattern warrants caution. Pre-purchase inspection and recall verification are essential.

Electrical faults can lead to costly repairs and safety concerns, while structural issues may affect long-term durability.

May Suit

This year may suit buyers who prioritize modern features and are willing to perform thorough due diligence.

May Want to Avoid

Buyers seeking maximum reliability and minimal service visits should consider other model years or alternatives.

Pre-purchase

What to check before buying a used 2021 Cadillac Ct5

Inspection Focus

  • Inspect electrical system including infotainment and wiring harnesses.
  • Check for structural integrity, especially around body panels and frame.
  • Verify airbag system functionality and recall status.

Before You Close the Deal

  • Inspect electrical system for known faults.
  • Verify all open recalls at nhtsa.gov/recalls.
  • Request service records for reported components.
  • Have a mechanic inspect before purchase.

Check the exact car

Shortlist with model-year data. Decide with the exact VIN.

Before buying a used 2021 Cadillac Ct5, run a VIN history report to verify accidents, title brands, odometer records, theft checks, and open recalls for the exact vehicle.

AI verdict

What the complaint data suggests

Editorial interpretation of NHTSA public complaint data. Source: nhtsa.gov. Complaints are owner-submitted and do not confirm a defect. Methodology

Based on NHTSA complaint data, the 2021 Cadillac CT5 has 19 complaints and 4 recalls. Electrical faults dominate with 7 reports, followed by structural problems (3) and airbag malfunctions (2). Source: NHTSA owner complaints and recall records.

Year context: Only one model year (2021) was analyzed, so no year-over-year comparison is available.

Recall context: With 4 recalls, verifying all open recalls at nhtsa.gov/recalls is critical before purchase.

Key Findings
  • Electrical faults account for 7 of 19 total complaints.
  • Structural problems are the second most reported issue with 3 complaints.
  • There are 4 recalls for the 2021 model year.
Top Concerns
  • Electrical Faults (7 complaints)
  • Structural Problems (3 complaints)
  • Airbag Malfunctions (2 complaints)
Data note: NHTSA complaints are consumer-submitted and do not confirm a manufacturing defect. Low complaint count (19) limits statistical reliability.

Full breakdown

All 2021 Cadillac Ct5 complaints by category

Every owner-reported complaint category filed with NHTSA for the 2021 Cadillac Ct5. Use this as a pre-purchase inspection checklist.

ComponentComplaintsCrashesFiresAvg MileageVolume
Electrical Faults71β€”β€”
Structural Problems3β€”β€”β€”
Uncategorized Issues2β€”β€”β€”
Transmission / Drivetrain2β€”β€”β€”
Airbag Malfunctions22β€”β€”
Forward Collision Avoidance: AEB22β€”β€”
Wheel Issues1β€”β€”β€”
Engine Problems1β€”β€”β€”
Fuel/Propulsion System1β€”β€”β€”
Steering Defects1β€”β€”β€”
Headlight/Taillight Failures1β€”β€”β€”
Visibility/Wiper1β€”β€”β€”
Brake System11β€”β€”
Visibility1β€”β€”β€”
Tire Issues1β€”β€”β€”
Seat Belt Issues11β€”β€”

Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.

In their words

Real owner complaints

Read what owners actually reported to NHTSA for the 2021 Cadillac Ct5. Type a keyword (e.g. β€œtransmission”, β€œstalling”, β€œbrakes”) to filter.

Showing 19 most recent complaints

Electrical FaultsMay 18, 2026

We own a 2021 Cadillac CT5 that we bought used in 2024 from Sewell Cadillac in Houston, Texas. During our first year of ownership, and while still under warranty, we started having intermittent issues with the rear doors. At times, one or the other rear doors would only open from…

Electrical FaultsApr 1, 2026

The door(s) would not open from the outside. I had the driver side door handle replaced first - took weeks for the part to come in - this was a safety issue because I had to climb through the passenger side to open the driver side door. (the key entry would not work either) Aft…

Electrical FaultsFeb 24, 2026

I've had my driver side door handle switch replaced beacuse it was faulty and I could not get into my car through the driver side. Now I am having the same issue with the passanger side. In a case of an emergeny if I can not get into my car I fear for my or my passanger's safety.…

Wheel IssuesFeb 12, 2026

While driving on a very busy highway going downhill when suddenly the vehicle started feeling abnormal like it was going to turn off automatically, heard an abnormal grinding noise coming from the engine the vehicle dropped speed drastically and the check engine light turned on …

Structural ProblemsFeb 5, 2026

Exterior driver side door handle will not open the door causing issues with ingress into vehicle.

Electrical FaultsJan 16, 2026

The passive door locks on the handles to the car do not work. The electronic sensor to unlock the car does not work due to misalignment of the pin that is supposed to press the key. This is a widely known issue on 2020-2021 Cadillac ct5 vehicles. This eventually results in total …

Transmission / DrivetrainAug 19, 2025

The contact owns a 2021 Cadillac CT5. The contact stated that while driving approximately 42 MPH – 66 MPH, the vehicle was shaking abnormally. The contact stated that while driving at an undisclosed speed, the vehicle jerked and shuddered while shifting gears. The cause of the fa…

Fuel/Propulsion SystemAug 12, 2025

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…

Electrical FaultsAug 12, 2025

The exterior door handle latch release switch fails to open the door. This issue happened to all 4 exterior doors. The problem starts with intermittently, then progresses to complete failure. Once it fails, the entire door handle needs to be replaced. If all 4 doors fail, the …

Structural ProblemsAug 10, 2025

Beginning of 2025 my drivers side door handle would not open from the outside of the car only the inside . I took it to a certified Cadillac dealer which they had to replace the door handle . Now July 10, 2025 my front passenger side is doing the same thing and I will not have to…

Airbag Malfunctions CrashJul 26, 2025

My 2025 Cadillac CT5 was stationary at a red light behind a red truck when a black truck traveling in the opposite direction struck the truck head-on. The red truck was pushed backward into the front of my CT5 with enough force to cause major front-end damage. Despite this, no ai…

Steering DefectsJul 7, 2025

aste): The vehicle has a serious pulling issue while driving, which was not corrected with alignment and poses a safety risk. Additionally, the windshield was scratched by faulty wiper blades that impaired visibility β€” the dealer later reimbursed me. Lastly, the driver-side runn…

Structural ProblemsFeb 11, 2025

Currently my passenger door and my rear driver side door do not open from the outside. I already had to have my driver side door handle replaced for the same issue, now three out of four of my handles have failed. If an accident were to occur no one would be able to access the pa…

Transmission / DrivetrainJan 15, 2025

Service transmission message showed up on dash. Dealer stated after performance test found P17A5 code for shift control. The dealer stated that the gear shift assembly needed to be replaced and if not, that the car could get stuck in gear which I feel is a safety risk. My vehicl…

Electrical FaultsDec 28, 2024

Driver Side door handle stops working. Because the door handle operates with a sensor and not a standard pull door handle something is being affected and it will not open door. Causing safety issue and not being able to enter car normally.

Electrical Faults CrashAug 1, 2024

When approaching a stopping vehicle the brake pedal became extremely hard to press and I could not brake enough to stop and had a collision. Come to find out that the ABS computer and the main ECU weren't communicating correctly which turned off the assisted braking, assisted ste…

VisibilityJul 26, 2024

The contact owns a 2021 Cadillac CT5. The contact stated while driving at approximately 72 MPH, there was a loud noise inside the cabin. The contact became aware that the sunroof had shattered without impact. The vehicle was not diagnosed or repaired by an independent mechanic or…

Tire IssuesJun 27, 2022

BOTH PASSENGER SIDE TIRES SPLIT AT THE SEAM PUTTING ME AND MY FAMILY'S SAFETY AT RISK. TIRES NEED TO BE REPLACED IMMEDIATELY CONFIRMED BY DEALERSHIP - BOMMARITO CADILLAC ST. PETERS MISSOURI BOMMARITO CADIALLAC ST. PETERS MISSOURI ALSO INFORMED ME GM HAS INSTRUCTED TO NO LONGER …

Airbag Malfunctions CrashAug 29, 2021

There was no indication that the Automatic Braking System, Air Bags and Seatbelts were not working properly. In August 12, 2021, I was in an auto accident where I rear-ended another dodge car. The air bags did not deploy and Onstar was not notified. I believe I hit the steerin…

Source: NHTSA Complaints Database. Real owner reports for the 2021 Cadillac Ct5.

Safety recalls

2021 Cadillac Ct5 recalls

4 campaigns

NHTSA recall campaigns for the 2021 Cadillac Ct5. With 4 recalls, verifying all open recalls at nhtsa.gov/recalls is critical before purchase. Recalls are free to fix at authorized dealers, but completion status must be verified on the exact VIN.

Safety recall

AIR BAGS:SIDE/WINDOW:CURTAIN

#21V611000AIR BAGS:SIDE/WINDOW:CURTAINMay 8, 2021
Safety recall

AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT

#21V421000AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHTOct 6, 2021
Safety recall

EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE

#22V903000EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWAREAug 12, 2022
Safety recall

POWER TRAIN:AUTOMATIC TRANSMISSION

#25V148000POWER TRAIN:AUTOMATIC TRANSMISSIONJun 3, 2025

Across model years

Compare Cadillac Ct5 model years

Only one model year (2021) was analyzed, so no year-over-year comparison is available.

Research more

Keep researching before you buy

Compare brands and categories, then check the exact car's history by VIN.

Questions

2021 Cadillac Ct5 buying FAQ

Buyer-focused answers based on real NHTSA complaint and recall data for this model year.

Is the 2021 Cadillac Ct5 reliable?β–Ύ

Severe Issues. NHTSA currently shows 19 owner complaints, 3 crash-related complaints, and 4 recall campaigns for this model year. The 2021 CT5 may be worth considering if you find a well-maintained example, but the electrical complaint pattern warrants caution. Pre-purchase inspection and recall verification are essential. Treat this as a model-year signal, then verify the exact vehicle's condition and history before purchase.

What are the most common problems with the 2021 Cadillac Ct5?β–Ύ

#1: Electrical Faults (7 complaints). #2: Structural Problems (3 complaints). #3: Uncategorized Issues (2 complaints)

At what mileage do problems start on the 2021 Cadillac Ct5?β–Ύ

Mileage data is not available or insufficient for this model year.

How safe is the 2021 Cadillac Ct5?β–Ύ

Complaint data is not the same as crash-test scoring, but it does highlight possible risk patterns. For the 2021 Cadillac Ct5, NHTSA complaints include 3 crash-related reports and 0 fire reports out of 19 total complaints. 2 injury reports are also on file. For controlled crash-test ratings, check nhtsa.gov/ratings.

Does the 2021 Cadillac Ct5 have any recalls?β–Ύ

Yes. 4 NHTSA recall campaigns affect the 2021 Cadillac Ct5. A major recall area is AIR BAGS:SIDE/WINDOW:CURTAIN. With 4 recalls, verifying all open recalls at nhtsa.gov/recalls is critical before purchase. Always verify open recalls by VIN because completion status varies by vehicle.

Should I buy a 2021 Cadillac Ct5?β–Ύ

The 2021 CT5 may be worth considering if you find a well-maintained example, but the electrical complaint pattern warrants caution. Pre-purchase inspection and recall verification are essential. Electrical faults can lead to costly repairs and safety concerns, while structural issues may affect long-term durability. Pay extra attention to Electrical Faults during inspection. Before committing, run a VIN history report to verify accidents, title brands, odometer records, and recall completion for the exact car.

Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinSpector AI.

Wider context: See the full Cadillac Ct5 reliability report with year-by-year comparison.

Owner Reliability Rating

Rate the 2021 Cadillac Ct5 based on your ownership experience.

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Ratings are based on owner experience and are separate from NHTSA data shown above.

Before you buy

Check the exact vehicle history before you buy

Model-year complaints and recalls reveal patterns. A VIN report confirms whether the exact car has accident history, title brands, mileage issues, or open recalls.