NHTSA Complaint #11623798 — 2019 HYUNDAI SONATA

Failed Component: Engine - Burnt Valve/ Snapped Piston/ Piston Scrapping Internally; available for inspection - Risk of safety: Car sputters/jerks upon acceleration, takes a long time to gain speed, STALLS when slowing or stopping, may or not start after stalling, violently shakes while driving - Problem has been confirmed by Hyundai dealer/repair - Component has not been inspected by the manufacturer, police, insurance representative; only Hyundai repair - Warning lamp, messages, and symptom PRIOR to failure, NO, after the failure, YES; check engine light and all symptoms listed above; all appeared approximately September 15, 2024. Since the purchase of the vehicle in January 2024, I have made complaint regarding the performance of the vehicle. Have had multiple oil changes/fill ups within the last 7 months, due to excessive oil consumption. Vehicle has had scheduled maintenance, several diagnostics, and too many trips to the dealership/repair for a 5 year old vehicle, with regular maintenance, and 3 owners. I have owned the vehicle for less than a year and I am UNABLE TO DRIVE IT DUE TO HYUNDAI STATING IT NEEDS A NEW ENGINE. It stalls when slowing and stopping, which it may or may not start back up - this happened a few times in the middle of traffic. It will not gain speed appropriately when moving from a complete stop, inhibiting me from keeping up with traffic. It shakes violently while accelerating, causing mishandling and ability to steer effectively.