2011 Kia Optima cruise control problems

Tl* the contact owns a 2011 kia optima. While driving 10 MPH and proceeding to stop, the brake pedal was depressed but the vehicle failed to stop. The vehicle began to surge forward without warning. The contact's vehicle rear ended another vehicle. A police report was filed. Injuries where sustained, but medical attention was not required. The vehicle was not diagnosed or repaired. Prior to the crash, the vehicle was diagnosed three other times and it was determined that nothing was wrong with the vehicle.

Vehicle was accelerating at 60 MPH on the highway when the engine shut off, no power. The vehicle had enough momentum to drift across the slow lane to the shoulder. Car did restart. A child was in the vehicle and thankfully they were not rear-ended. This incident happened a second time while accelerating and prompted with clicking noises under the dash. The vehicle was brought to our local mechanic who stated that the engine failure at 120,400 miles.