NHTSA Complaint #11705843 — 2019 HYUNDAI KONA

Vehicle Safety Complaint Narrative On Saturday, December 6, 2025, I brought my 2019 Hyundai Kona to Millennium Hyundai in Hempstead, New York, the dealership where the vehicle was purchased, for evaluation due to engine safety concerns. While driving the vehicle, we heard a knocking sound coming from the engine. One week earlier, on November 29, 2025, we brought the vehicle to our local mechanic after noticing the noise. The mechanic advised that the engine oil level was low and refilled the oil. Despite this, the knocking sound continued. Due to ongoing concerns about potential engine failure and because the vehicle is still under warranty, we scheduled an appointment with Millennium Hyundai for further diagnosis. The knocking noise raised serious safety concerns. On December 6th, we contacted the service manager, who advised us that the pistons were bad and they would need to replace the engine. On Monday, December 8th, we called the dealer and they then told us, that before any work could be done, that we would have to do an oil change for $90, drive the car for 1,000 miles and come back for an oil consumption test for $600 before they could make the repairs under the warranty. We are submitting this complaint to report a potential safety defect related to engine performance and reliability in the 2019 Hyundai Kona, as unexpected engine failure could pose a significant safety risk and, their requirement that we have to drive an unsafe car for 1,000 miles could be dangerous to the driver, passengers, and others on the roadway.