NHTSA Complaint #11480157 — 2017 HYUNDAI SONATA

The contact owns a 2017 Hyundai Sonata. The contact stated while driving approximately 70 MPH, the vehicle stopped accelerating as needed. There were no warning lights illuminated. The contact activated the hazard lights and coasted the vehicle to the residence. The contact then was followed by a friend to the dealer. The vehicle was diagnosed with a knock sensor and cylinder failure. The vehicle was repaired; however, the failure reoccurred. Additionally, while attempting to shift the vehicle into reverse, the vehicle failed to respond. The manufacturer was not notified of the failure. The approximate failure mileage was 85,700.