The contact owns a 2021 Kia Seltos. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with an engine misfire and low oil. The contact stated that the vehicle was scheduled for a service appointment for the following week, however the contact experienced the failure prior to the scheduled appointment date. The dealer was made aware of the failure, and the contact was informed that the recall repair was not available at the scheduled location any longer. The contact received notification of NHTSA Campaign Number: 25V099000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was 53,745. Parts distribution disconnect.