I am submitting this complaint regarding a serious engine defect in my 2014 Hyundai Santa Fe, which suffered rod bearing failure and now requires a full engine replacement at a cost of approximately $8,600. This failure occurred on April 13, 2025, despite regular oil changes and proper maintenance throughout my 1 year and 7 months of ownership. According to my certified mechanic, the vehicle was evaluated using Hyundai’s own rod bearing clearance test protocol, which it failed. The results were submitted to Hyundai by the repair shop, but the manufacturer denied the claim—despite their own diagnostic test confirming the issue. I later discovered that my vehicle may fall under NHTSA Campaign Number 17V226000 (Recall 162), which addresses machining errors in the Theta II GDI engine that can cause premature bearing wear. I am requesting that NHTSA investigate whether my vehicle should be formally included in this recall or covered under Hyundai’s extended warranty program for rod bearing failures. This issue represents a serious safety risk. The engine began knocking suddenly, without any warning lights or codes, and still had another month or 1,419 miles left till next service and oil level was normal. Vehicle had to be towed to a service facility. A failure while driving could have resulted in a complete engine seizure, placing my family and others at risk. I respectfully request that NHTSA review this issue and investigate Hyundai’s handling of such claims, especially where their own testing confirms a known defect.