The contact owns a 2024 Hyundai Ioniq 6. The contact stated that upon attempting to install a child safety seat, the rear driver’s and passenger’s side seat belt tongues failed to fit into the buckle, preventing the seat belt from fastening securely, and compromising the safety restraint system. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown. The VIN was not available.