On August 17, 2024, my 2017 Kia Sportage suddenly lost power on the highway. The check engine light came on seconds before the engine seized completely. I was able to pull into the breakdown lane because I was already in the exit lane. It was a very frightening moment and could have been dangerous if I had been in a different lane or in heavier traffic. Component that Failed: The engine seized. The dealership found burned holes in the valves of cylinders 2 and 4. The vehicle is still in my possession and available for inspection. Safety Risk: Sudden loss of power on a highway placed me and others at risk of a serious accident at high speeds. Confirmed by Dealer: The dealer confirmed valve damage and misfire codes. Root cause was not confirmed. Inspected: The vehicle was not fully inspected by an authorized Kia dealer. Kia observed burned valves and did not investigate further into the engine to identify the cause. Warnings Prior to Failure: The check engine light came on minutes before the failure. No prior symptoms. Assessment: Rod bearing failure is suspected due to the sudden engine seizure. During the first visit to the dealership, a diagnostic fee was paid, but Kia stopped investigating after discovering burned valves. On the second visit, the dealership attempted but did not complete the bearing clearance test. They also chose not to open a Techline case, which is required under Kiaâs own NHTSA-documented bearing clearance test procedures (TSB SST067 Rev 2) when the test cannot be completed. Kia has provided incomplete diagnostics and avoided further investigation, leaving me without answers. I was told I need a new engine, but I have never been told what actually caused the failure.