NHTSA Complaint #11680110 — 2017 KIA SORENTO

My 2017 Kia Sorento has developed intermittent safety-related engine issues that have resulted in loss of acceleration and stalling. December 2024: After a two-hour drive, the vehicle stalled and would not restart. Roadside assistance confirmed the engine oil level was low, despite no external leaks. After approximately two hours, the vehicle restarted. [XXX]: After driving about 30 minutes and parking for 10–20 minutes, the engine started with loud rumbling/knocking noises, and the accelerator was unresponsive. The problem resolved only after shutting the car off and restarting. Video is available. The Kia dealer performed a rod bearing test which passed, but the symptoms match early failure stages of the known Theta II engine defect covered under Kia’s lifetime warranty (PI1802 settlement). Kia attributes the issue to “low oil” as a maintenance problem, but the oil consumption appears to be internal and abnormal. This defect creates a serious safety risk because it causes sudden loss of power, which could lead to an accident if it occurs while driving in traffic. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)