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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 problem, the dealership informed me that the entire transmission required replacement. This is a major component failure on a nearly new vehicle with relatively low mileage. A complete transmission replacement on a new vehicle, combined with a sudden failure at highway speed, raises serious concerns about the safety and reliability of this model. A transmission should not fail unexpectedly under normal driving conditions, especially in a new vehicle. (They changed gearbox in 14 days) I am reporting this incident because I believe it represents a potential safety defect that could place other drivers and passengers at risk. I respectfully request that NHTSA investigate whether similar transmission failures have been reported in the 2025 Cadillac XT4 and determine whether this issue warrants further investigation or a safety recall. In addition to the highway transmission failure, I have experienced another serious safety concern. When shifting the vehicle from Park into Drive or Reverse, the transmission sometimes does not engage immediately. Instead, there is a delay of several seconds, followed by a sudden and unexpected engagement that causes the vehicle to lunge forward or backward. This sudden movement is completely outside of my control and creates a significant safety risk.

CADILLAC XT4 2025 POWER TRAIN:AUTOMATIC TRANSMISSION

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..

CADILLAC XT4 2025 ELECTRICAL 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.

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.

CADILLAC XT4 2025 LANE DEPARTURE: ASSIST

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.

2025 Cadillac XT4 FWD — vehicle data sourced from FuelEconomy.gov.

El Cadillac XT4 FWD (2025) es un SUV compacto con tracción delantera, certificado en seguridad y listo para la carretera. Ofrece un equilibrio entre eficiencia de combustible y rendimiento, con un motor turboalimentado de 2.0 litros y transmisión automática de 9 velocidades.

	2019	2020	2021	2022	2023	2024	2025
product.price	—	—	—	—	$36,795	$39,000–$47,795	$39,000
specs.engine_capacity	2L	2L	2L	2L	2L	2L	2.0L
specs.fuel_type	Premium	Premium	Premium	Premium	Premium	Premium	Premium
specs.transmission	Automático (S9)	Automático (S9)	Automático (S9)	Automático (S9)	Automático (S9)	Automático (S9)	9 speed automatic
specs.body_type	SUV pequeño 2WD	SUV pequeño 2WD	SUV pequeño 2WD	SUV pequeño 2WD	SUV pequeño 2WD	SUV pequeño 2WD	SUV

Cadillac XT4 FWD (2025) product.specifications