Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2013 Kia Optima owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owned a 2013 Kia Optima. The contact stated that while driving the vehicle, the contact became aware of black smoke coming from the floorboard with a burning plastic odor, and the battery warning light illuminated. The contact called her husband and was informed to exit the vehicle. The contact exited the vehicle and seconds later the vehicle exploded. The front of the vehicle blew up onto the windshield and the steering wheel detached and struck the driver's side seat. The fire was extinguished by the Fulton County Fire Department. A Fire Report and Police Report were filed; however, the reports were not yet provided to the vehicle owner. The contact experienced severe emotional distress. The contact stated due to the emotional distress of the fire, she suffered a miscarriage from the stress and had scratches from having to jump out of the window. …
The contact owns a 2013 Kia Optima. The contact stated that while driving approximately 70 MPH with the cruise control activated, there was smoke coming from underneath the passenger's side of the hood before the vehicle decelerated. The contact stated that moments later there were flames coming from the underneath the hood of the vehicle. The vehicle was parked on the side of the road and flames quickly engulfed the vehicle. The Fire Department was called to the scene and arrived and extinguished the fire. During the fire the vehicle was destroyed and was later towed to a nearby storage facility. While attempting to quickly exit the vehicle the contact fell to the ground and sustained an injured left leg and left side. The cause of the failure was not yet determined. The contact stated that the engine was recently installed related to a recall repair. …
The contact owned a 2013 Kia Optima. The contact stated while his brother was attempting to accelerate from a complete stop, the accelerator pedal was depressed but the vehicle failed to respond. There was no warning light illuminated. The contact's brother then saw flames underneath the hood of the vehicle. The contact's brother immediately exited the vehicle. The contact stated that the fire expanded significantly. The contact's brother was able to extinguish the fire with the assistance of the fire department. A fire department report was filed. There were no injuries sustained. A police report was filed. The vehicle was towed to a tow lot, where it was totaled. The dealer was notified of the failure. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 180,000.
The contact owned a 2013 Kia Optima. The contact's son was driving at 35 MPH when smoke was emitting from under the hood. The contact's son pulled over to the side of the road and immediately exited the vehicle. The contact's son opened the hood, and smoke was emitting from the engine. No warning lights were illuminated. The contact's son did not sustain any injuries. The police or fire department was not called. The vehicle was towed to an independent mechanic, who diagnosed that an electrical fire had started in the engine and damaged the engine. The vehicle was not repaired. The manufacturer was not notified of the fire. The contact stated that the engine was replaced in 2018 or 2019 due to an unknown recall. The contact did not notify her insurance company. The failure mileage was approximately 190,000.
The contact owns a 2013 Kia Optima. The contact stated that while driving approximately 40 MPH when they suddenly heard a loud boom noise and the front end of the vehicle caught on fire. The contact pulled into a nearby parking lot and all passengers exited the vehicle. The vehicle was consumed by the fire which was put out by the fire department. The vehicle was towed and totaled. There were no injuries or need for medical assistance. The fire department filed a report. There were no injuries or need for medical assistance. The dealer was contacted and informed of the failure. The vehicle was not taken to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 187,000.
The contact owned a 2013 Kia Optima. The contact stated that while parked, the contact noticed smoke coming from the hood and went to open the hood but could not because the latch had melted. The contact went to get an extinguisher but the flames were too aggressive. The vehicle had exploded twice while waiting for the fire department. The fire department extinguished the fire. A fire department report was filed. No police report was filed. No warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and determined that the VIN was not under a recall. The failure mileage was approximately 123,000.
The contact owns a 2013 Kia Optima. The contact stated while inside the vehicle with the engine idling smoke was suddenly present coming from under the hood of the vehicle. The fire department was called to the scene who extinguished the flames. The vehicle was towed to the local dealer. The vehicle was not yet repaired. No further information was available. The contact indicated that the failed engine was a replacement engine previously installed under a recall campaign. The manufacturer was also notified of the failure. The failure mileage was 110,000. Consumer had the car inspected and was told there was oil leakage but inspection states engine presented with oil inside.
The contact owned a 2013 Kia Optima. The contact stated while driving approximately 55 MPH the vehicle stalled as if someone had pulled the vehicle. Numerous warning lights were illuminated on the instrument panel. The contact slowed down and pulled over safely then removed herself from the vehicle. Once exited the vehicle it became totally engulfed in flames and was destroyed; however, prior to exiting the vehicle noticed black smoke coming from the hood. The fire department arrived on the scene and extinguished the fire. There was a police report. There were no injuries sustained or medical reports. The approximate failure mileage was 90,000.
The contact owned a 2013 Kia Optima. The contact stated that while the vehicle was parked at the residence, she attempted to start the vehicle and noticed smoke coming from the hood near the battery compartment. The vehicle then caught on fire. The fire department came to extinguish the fire. A fire report was filed. The cause of the fire was a faulty engine component. The vehicle remained at the residence and was not repaired. The vehicle was deemed a total loss. The manufacturer was notified of the failure. The approximate failure mileage was 111,000.
The contact owns a 2013 Kia Optima. The contact stated that while driving at approximately 75 mph, the vehicle stalled without warning. In addition, the front of the vehicle was in flames. The fire department extinguished the fire. The vehicle was towed to a tow lot. The dealer was not contacted. The vehicle was not repaired. The vehicle was destroyed. The manufacturer was not notified of the failure. The approximate failure mileage was 127,000.
Related recalls
Engine
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign.
Remedy: Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542.
Engine and engine cooling › Engine
Kia Motor Company (Kia) is recalling certain 2011-2014 Optima, 2012-2014 Sorento and 2011-2013 Sportage vehicles. Machining errors during the engine manufacturing process may cause premature bearing wear within the engine.
Remedy: Kia will notify owners, and dealers will inspect the engine assembly, and replace the engine if necessary, free of charge. The recall began June 20, 2017. Owners may contact Kia customer service at 1-800-333-4542.
NHTSA investigations
Scope and Timeliness
NHTSA opened Recall Query (RQ) 17-003 to investigate the timeliness and scope of Kia?s Theta II GDI engine recall (Recall No. 17V-224), and Kia?s compliance with reporting requirements. On November 23, 2020, the Agency entered into a Consent Order with Kia to administratively resolve NHTSA?s assertions of violations of law in connection with RQ17-003.
Engine Fires
On March 29, 2019, the Office of Defects Investigation (ODI) opened two Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) to broadly investigate incidents of non-crash fires (regardless of origin or operational status of the vehicle) on various model year Hyundai and Kia vehicles.
Loss of Motive Power
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021.
Engine complaints in other Optima years
Frequently asked questions
How common are engine problems on the 2013 Kia Optima?
NHTSA has 651 complaints about the engine & cooling of the 2013 Kia Optima, 47% of the model year's 1,386 complaints. The component named most often is engine › gasoline › belts and associated pulleys (1 mentions).
Is there a recall for 2013 Kia Optima engine problems?
Yes — NHTSA recall 18V-907 (engine, Dec 19, 2018); NHTSA recall 17V-224 (engine, Mar 31, 2017). Recall repairs are free at authorized dealers.
At what mileage do 2013 Kia Optima engine problems start?
Half of the complaints with a recorded mileage happened before about 100,000 miles, and 7% before 25,000 miles.
Is it dangerous?
Owners linked 12 crashes, 89 fires and 15 injuries and 2 deaths to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.