I am writing to file a formal safety complaint regarding my 2017 Hyundai Sonata which suffered an unexpected engine seizure on January 22, 2025, while my daughter was driving. The incident occurred without warning and left her stranded in a hazardous location, putting her in immediate danger. This appears to be part of a wider, documented issue affecting Hyundai vehicles. My understanding is that engine failures’particularly in Sonata models’have been the subject of recalls and class action lawsuits. However, Hyundai Motor America has refused to replace or repurchase the vehicle. Instead, they replaced the engine with one that now carries less warranty coverage than the original (12,000 miles vs. 26,000 miles remaining). Since the engine replacement, the vehicle has presented new problems, and now needs a new battery after sitting on the lot for so long. Hyundai has failed to offer meaningful support, leaving my family without a reliable vehicle for over two months. Hyundai has refused to replace or repurchase the vehicle, and I am now stuck with a car I cannot drive, cannot sell (due to the engine failure now reported on Carfax), and cannot rely on to safely transport my daughter. I believe this represents not only a serious safety risk, but also a pattern of negligence that could affect other drivers unaware of the risks. I respectfully request that NHTSA investigate this issue further and consider expanding oversight into Hyundais handling of these engine failures. I am available to provide full documentation, service records, and communication history.