The contact owns a 2018 Buick Encore. The contact stated while driving 35 mph, she depressed the brake pedal but it failed to stop the vehicle, causing her to rear-end a truck. The contact stated no warning light was illuminated. The air bags did not deploy. The contact did not sustain any injuries nor sought medical attention. A police report was filed. The contact was able to continue driving to her destination. The contact called the local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. The vehicle was taken to a collision center and had the front bumper repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 15,000.