*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Tires
The contact owns a 2025 Cadillac XT4 equipped with Continental Tires, Tire Line: Pro Contact TX, Tire Size: 235/60/R18, DOT Number: (N/A). The contact stated that while driving at an undisclosed speed, the passengerâs side rear tires experienced a blowout. The vehicle was taken to the local dealer, where the tire was replaced, but six months later the driverâs side tire experienced a blowout, which caused significant damages to the driverâs side fender wheel well. The manufacturer was contacted but denied any financial assistance due to the purchase of the aftermarket tires. The contact replaced all four tires due to the concerns of another blowout. The approximate failure mileage was…
Aug 14, 2026 · 9,114 milesUnknown or other
Vehicle Safety Complaint I am submitting this complaint regarding my 2025 Cadillac XT4 because of a serious transmission failure that created a significant safety hazard. While driving on the interstate at approximately 60 mph, the transmission suddenly malfunctioned and the vehicle lost its ability to operate normally. The transmission appeared to disengage unexpectedly, causing a sudden loss of power and creating a dangerous situation in fast-moving traffic. I was concerned that my vehicle could have been struck by other vehicles because it was no longer responding as expected. The vehicle had to be towed to an authorized Cadillac dealership for inspection and repair. After diagnosing the…
Jun 24, 2026Electrical system
The Onstar service will not operate. The Onstar system drains the batter so the car will not start. Cadillac cant get the operative part for the Onstar, the telematic module. So the car is sitting at the Cadillac dealer and cant be repaired..
Apr 30, 2026Service brakes
On July 28, 2025, while driving the vehicle on public street, a warning flashed that the brakes have failed. In fact the brakes were totally inoperative. Driver was able to clear traffic and exit the roadway without incident. The Cadillac dealership found no issue with the brakes, but did "update the brake control module." In March, 2026 a crack in the windshield appeared. Safelite Company was unable to replace the windshield, as their computer showed several modular errors, preventing them from recalibrating a new windshield. The car was taken to the local Cadillac Dealer, who was presented with a printout showing the following: Code U1961-92, "fail since clear. Code U164E-00, "fail since…
Jul 28, 2025Electrical system
The contact owns a 2025 Cadillac XT4. The contact stated that the vehicle independently started after it was parked and turned off. The contact stated that the failure was intermittent but was a recurring failure. There was no warning light illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the computer system needed to be reset. The vehicle was repaired; however, the failure reoccurred. The manufacturer was not informed of the failure. The failure mileage was approximately 17,000.
Jan 12, 2026 · 17,000 milesElectrical system
Multiple issues: Leaking transmission fluid, multiple issues with on star system, side detection system, lane keep assist. On star issue involves being unable to contact an advisor in the case of an emergency. Apps in car work intermittently, including Google Maps which is imbedded in the vehicle system. Dealership has stated that onstar and map issue is ongoing and multiple complaints have been received about this issue. Transmission leak started appears to have started right after the purchase of the vehicle. Lane Keep assist and side detection system displayed error message stating that the systems needed to be serviced.
Jan 12, 2026Electrical system
The vehicleâs OnStar system, emergency calling features, and built-in navigation/maps do not function properly. The maps do not work, emergency calling is unreliable, and OnStar is unable to accurately locate my vehicle. This is a serious safety concern because these systems are intended to provide immediate emergency assistance and precise location information. I am the primary caregiver for my minor son, who has significant medical conditions like heart failure and requires ongoing cardiac care. In the event of a medical emergency while driving with him, it is critical that emergency services be able to locate us immediately and accurately. Because the vehicle cannot reliably provide…
Dec 13, 2025Electrical system
Telematics Controller has gone out. Took 2 weeks to get vehicle into dealership. After diagnosis we are told there is no availability on the part and no backorder or visibility as to when it will be available. Functionality of vehicle, value and user safety has been effected as safety and convenience features originally on the vehicle no longer function and cause distraction.
Dec 15, 2025
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
