On September 16, 2026, at approximately 3:30 PM, I was driving my 2026 Cadillac OPTIQ on a dry road under clear, blue-sky conditions. Cruise control was set at approximately 28 mph. There were no vehicles in front of me or behind me, and there were no apparent roadside objects or other conditions that should have presented a collision hazard. Without warning, the vehicle displayed a "Grab the Wheel" warning. My hands were already on the steering wheel at approximately the 10-and-2 positions. A red collision-alert box was also displayed on the windshield even though there was nothing in front of the vehicle. The vehicle then began slowing substantially. I attempted to regain normal control, including gripping the steering wheel at various positions, but the vehicle did not respond to anything I tried. It continued slowing until it had brought me to a near stop. During the event, I pressed down the SET switch located immediately to the left of the center of the steering wheel. The vehicle's warning/hazard flashers came on. Thankfully, there was no vehicle behind me. This is the SECOND time I have experienced a similar event in this vehicle. During the previous occurrence, I was traveling at approximately 45 mph. There was likewise no vehicle immediately in front of me or behind me. I am reporting this because an unexpected substantial deceleration or stop at roadway speed, particularly when a following vehicle is present, could result in a serious rear-end collision. I am concerned that this represents a safety-related defect and request that the vehicle's driver-assistance, collision-detection, braking, cruise-control, driver-monitoring, and related diagnostic/event data be investigated.

Source: NHTSA complaint ODI #11764812 · view all complaints for this vehicle at nhtsa.gov

On Friday August 7th, I was driving my 2026 Cadillac OPTIQ Luxury AWD at approximately 25 mph near Byron road in Tracy. While crossing a railroad track under normal driving conditions, both passenger-side tires—the right-front and right-rear—suddenly lost air and sustained sidewall ruptures. I did not strike a pothole, curb, debris, or any other visible object, and no foreign object or tread puncture was found. Both tires were Continental CrossContact RX, size 245/50 R20 105H XL, tubeless and were the original factory-installed tires. The vehicle had approximately 12,850 miles, and the tires had approximately 12,850 miles. Before the incident, there was no tire-pressure warning or indication of a problem, and the tires were maintained at the vehicle manufacturer’s recommended pressure. The near-simultaneous failure of two tires on the same side required an immediate stop and created a serious risk of loss of vehicle control. Photographs show a substantial split in the tire sidewall. There were NO INJURIES and NO OTHER DAMAGE. Both failed tires have been retained and are available for inspection. I am requesting that NHTSA investigate whether these failures indicate a safety defect involving this tire model or its application on the vehicle.

Source: NHTSA complaint ODI #11757088 · view all complaints for this vehicle at nhtsa.gov