2019 Kia Optima engine problems

What owners report

• “I have a 2019 Kia Optima S with the 2.4L engine and 117,000 miles. The vehicle has diagnostic codes P1326 and POOOB. The check-engine light is continuously flashing, the engine is knocking, and the vehicle has lost acceleration and will not go over approximately 65 mph. I believe this may be related to the KSDS connecting-rod bearing issue under Kia campaign PI1805.”

  NHTSA complaint · filed 11/03/2026

• “Car smelled of what seemed like motor oil while driving. Parked, saw white smoke, and confirmed an engine fire. I was clearly in life threatening danger, especially with a full tank of gas. Fire developed rapidly into a roaring blaze. Entire front of car melted. Car is currently being investigated by manufacturer and cause is unknown. No warning lamps illuminated.”

  NHTSA complaint · filed 10/09/2026 · fire

• “VEHICLE SHUT OFF WHILE DRIVING AT 40MPH, ENGINE SEIZED ,WILL NOT CRANK .SUSPECTED CONECTING ROD BEARING FAILURE UNDER SAFETY RECALL SC200, I CALL KIA 18003334542 DENIED RECALL REPAIR AND BEARING CLEARANCE TEST STATING VEHICLE IS REBUILT TITLE. FEDERAL SAFETY RECALL CANNOT BE DENIED DUE TO REBUILT TITLE PER NHTSA .REQUESTING RECALL REMEDY.”

  NHTSA complaint · filed 10/08/2026

• “The vehicle experienced a sudden and severe loss of engine power while being driven on the interstate at highway speeds. The vehicle lost the ability to accelerate normally beyond approximately 60 mph, the Check Engine Light began flashing rapidly, and the vehicle entered “Limp Home Mode.” This sudden loss of power occurred in heavy traffic and created an immediate risk of a high-speed rear-end collision. The vehicle was subsequently inspected by an authorized Kia dealership service center. Dia…”

  NHTSA complaint · filed 09/29/2026

• “On December 26, 2023, this vehicle received a complete engine assembly replacement at an authorized dealership under a manufacturer warranty repair order. Following the engine overhaul, the vehicle developed a severe, raw gasoline smell entering the passenger cabin through the climate control AC vents while sitting at an idle.The vehicle was brought back to Kia Store East on September 10, 2026, specifically to report this volatile safety issue. On September 17, 2026, the dealership technician ex…”

  NHTSA complaint · filed 09/24/2026

• “While driving, my vehicle suddenly began shuddering and shaking. The vehicle lost power and would not accelerate properly. I had to press the brake pedal unusually hard. After parking, the vehicle would not move properly in reverse or drive. I turned the vehicle off and restarted it, and it moved only a short distance before shuddering again and losing power. The engine was making a loud buzzing or scooter-like sound. The vehicle became undrivable and had to be parked. I am concerned about a pot…”

  NHTSA complaint · filed 09/08/2026

• “The contact owns a 2019 Kia Optima. The contact stated that while driving at an undisclosed speed, the vehicle stalled. No warning lights were illuminated. The vehicle was towed to a dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 200,000.”

  NHTSA complaint · filed 08/18/2026

• “The contact owns a 2019 Kia Optima. The contact stated that while driving at various speeds on two occasions, the vehicle lost power with the check engine warning light illuminated. The vehicle was driven over to the side of the road and then towed to the dealer twice; however, the failure was not duplicated on the first visit. During the second visit, the vehicle was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The …”

  NHTSA complaint · filed 07/21/2026

Unverified owner reports from NHTSA's public complaint database.

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