Problems · NHTSA complaints

2018 Cadillac CTS problems

Owners filed 8 complaints about the 2018 Cadillac CTS with NHTSA between Jan 2019 and Jan 2026. The most-cited component is power train (3).

Complaints
8
Filed with NHTSA
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Power train3
  2. Electrical system3
  3. Air bags1
  4. Engine1
  5. Exterior lighting1
  6. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 9, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20191
20201
20211
20221
20230
20241
20252
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Power train

3 reports
“THE TRANSMISSION "SHUDDERS". It does not happen with any regularity and with no advance warning. It may be electronic or mechanical or both.”
Owner complaint to NHTSAFiled Jan 27, 2026Power train, Electrical systemODI 11713692

Electrical system

3 reports
“What component or system failed or malfunctioned, and is it available for inspection upon request? From 2018. The uauto start/stop system has failed 3 times. How was your safety or the safety of others put at risk? These components failing subjects the driver and surroundings to a stalled car that may not start again. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Inspection by vehicle dealer only. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No.”
Owner complaint to NHTSAFiled Dec 23, 2025Electrical systemODI 11706788

Air bags

1 report1 crash
“The airbag system failed to deploy during a single-vehicle accident in which the car left the service road and struck a tree. The vehicle sustained significant front-end damage. The driver lost consciousness or experienced disorientation and was unable to recall the events leading up to or immediately following the accident. The lack of airbag deployment increased the risk of serious injury, especially due to the vehicle impacting a tree and being lodged several feet off the road in the woods. Although there were no major injuries in this case, the airbag failure presented a serious safety risk and could have resulted in much worse outcomes. No, the airbag failure has not yet been confirmed or diagnosed by a dealership or independent service center. However, an insurance adjuster did state that based on the crash damage, the airbags should have deployed. The vehicle has not been inspected. No — there were no warning lights, messages, or symptoms indicating a problem with the airbag system prior to the crash. The vehicle appeared to be functioning normally before the incident.”
Owner complaint to NHTSAFiled Apr 17, 2025Air bagsCrash reportedODI 11655332

Engine

1 report
“I WAS DRIVING MY 2018 CADILLAC CTS BETWEEN 50-60MPH AND I LIGHTLY TAPPED ON THE GAS AND THE CAR STARTED SHAKING AND VIBRATING. FELT LIKE IT COULD BE A TRANSMISSION OR A ENGINE MISFIRE. MY CARS TRANSMISSION ALSO SHIFTS VERY VERY ROUGH KINDLY JERKY WHICH CREATES A UNSAFE ENVIRONMENT WHILE IN MOTION. THIS IS A CONSISTENT ISSUE AND WITH MY CAR AND ONLY HAVING 12,000 MILES ON IT I FIND REALLY CONCERNING. THIS VIBRATION ONLY HAPPENS BETWEEN 50-60MPH AND THE ROUGH TRANSMISSION SHIFTING HAPPENS AS I DRIVE IT ALONG WITH VIBRATIONS ARE COMING FROM THE ENGINE WHICH SHAKE MY ENTIRE CAR. ALL SERVICES ARE UP TO DATE. CADILLAC AND GM ARE BOTH NOT SURE OF WHAT THE ISSUE CAN BE EVEN THOUGH THERE IS A PENDING CLASS ACTION LAWSUIT FOR THE SAME ISSUE”
Owner complaint to NHTSAFiled Mar 24, 2021Power train, EngineODI 11404668

Exterior lighting

1 report
“THE CADILLAC DAYTIME RUNNING LIGHTS AND HEADLIGHTS EXCEED AMERICAN MEDICAL ASSOCIATION EYE SAFETY REQUIREMENTS OF 3000K COLOR TEMPERATURE OR LESS. THE CADILLAC LIGHTS ARE DAMAGING THE EYES OF DRIVERS OF ONCOMING VEHICLES AND OF PEDESTRIANS. THE GLARE CAUSED BY THE CADILLAC LIGHTS PREVENT DRIVERS OF ONCOMING VEHICLES FROM PROPERLY ASSESSING ROAD CONDITIONS AND SURROUNDINGS.”
Owner complaint to NHTSAFiled Jan 18, 2019Exterior lightingODI 11170691
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.