NHTSA Complaint #11671343 — 2017 HYUNDAI SONATA

I am writing to request your assistance in enforcing the terms of the class action settlement and extended warranty coverage for my 2017 Hyundai Sonata (VIN: [XXX] ). Despite clear evidence of a defective Theta II engine, Hyundai Corporate has refused to authorize a full engine replacement unless the engine “blows” completely. This directly conflicts with the express terms of the “In re: Hyundai and Kia Engine Litigation” settlement, which requires Hyundai to cover any engine exhibiting failure‐mode symptoms. Below, I have summarized all relevant facts, diagnoses, and correspondence. I purchased this Sonata used from Oakes Kia (Kansas City, MO) in May 2023. At the time of purchase, the vehicle had 77,000 miles. To my knowledge, I am the third owner of this vehicle. Since I bought this car, I have followed the manufacturer’s recommended maintenance schedule: All routine oil changes (every 5,000 miles, or sooner) at Oakes Kia, plus one oil change at Northtowne Hyundai in April 2025. The engine currently has approximately 98,650 miles. I have driven it about 1,000 miles since December 2024 to avoid further damage and due to the danger, it puts me and others in on the road. Since December the vehicle has had persistent shaking, hesitation on acceleration, strong odor, and illuminated Check Engine Light. Car condition has worsened since last oil change and even after coil packs and spark plugs were replaced, there was no improvement. The last oil change was done at Oakes Kia along with a tire rotation and multi-point inspection. They Installed UM018 CH074: Mobil SP 5W30 SN, 21513 23001: Gasket-oil plug and 26300 35505: Filter assy-engine O Service Advisor, Fernando Perez said they did not identify root cause of the shaking, hesitation and strong odor; they instructed me to return to the mechanic who had replaced spark plugs/coil packs, possibly I got a bad spark plug or coil pack. I did this, it was not the problem. I have files to share but they are too big! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATIO