NHTSA Complaint #11592613 — 2016 HYUNDAI SONATA

The contact owns a 2016 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle shuddered significantly. The contact stated that the vehicle stopped shuddering while shifted into neutral(N). Additionally, the contact stated that while driving and depressing the accelerator pedal, the failure recurred, and the vehicle jerked significantly. The low oil pressure warning light and the check engine warning light were illuminated. The vehicle was taken to an independent mechanic, where four ignition coils and four spark plugs were replaced; however, the failure recurred four months later. The vehicle was taken to the dealer, where the spark plugs were replaced and a fuel induction cleaning service was performed; however, the failure persisted. The contact stated while driving 5 MPH, the vehicle stalled. The vehicle was jumpstarted. The vehicle was taken to the dealer, where it was diagnosed that there was oil intrusion in the combustion chamber, and the spark plugs were fouled. The dealer determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 95,050.