The contact owns a 2014 Kia Sorento. The contact stated that while his daughter was driving at approximately 40-45 MPH, there was an abnormal knocking sound coming from the engine. There were no warning lights illuminated. The driver was able to pull over safely. The vehicle was towed to an independent mechanic who determined that the engine oil was a quart low. There was no indication of an oil leak or low pressure. The vehicle was consuming an excessive amount of engine oil. The mechanic determined that the engine needed to be replaced. The vehicle was repaired. The local dealer was informed that the parts were on backorder. The vehicle was not diagnosed or repaired. The contact called another local dealer, Kia of Irvine (45 Oldfield Building B, Irvine, CA 92618); but the vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 121,000.