2015 KIA Optima Problems, Complaints & Recalls

Source: NHTSA · Updated Sep 29, 2026 · 1,009 owner complaints analyzed

Compared with other Optima years
Far more complaints than other years 2nd of 20 for complaints
NHTSA crash rating
5 out of 5 stars

Owners have filed 1,009 complaints with NHTSA about the 2015 KIA Optima. That ranks 2nd out of 20 Optima model years for complaints. The most reported problem area is engine (622 complaints, 62%), typically at around 87,992 miles. Complaints mention 31 crashes, 74 fires, 23 injuries. There are 4 safety recalls covering this model year. NHTSA has opened 4 defect investigations involving it.

Complaints are unverified owner reports and are not adjusted for sales volume.

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Most common 2015 KIA Optima problems

Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.

Engine622 · ~87,992 mi
Unknown or Other139 · ~61,278 mi
Electrical System135 · ~81,250 mi
Structure76 · ~56,000 mi
Steering69 · ~39,125 mi
Power Train49 · ~82,794 mi
Service Brakes49 · ~34,000 mi
Fuel/propulsion System46 · ~90,000 mi
Service Brakes, Hydraulic41 · ~113,500 mi
Vehicle Speed Control36 · ~61,000 mi
Problem areaComplaintsShareMedian milesOwners mention mostTypical repair cost
Engine problems62262%87,992“engine seized” (11%)$7,950
Unknown or Other13914%61,278——
Electrical System problems13513%81,250“caught fire” (7%)—
Structure problems768%56,000“white pearl” (24%)—
Steering problems697%39,125“steering column” (19%)—
Power Train495%82,794——
Service Brakes495%34,000——
Fuel/propulsion System465%90,000——
Service Brakes, Hydraulic414%113,500——
Vehicle Speed Control364%61,000——
Engine and Engine Cooling313%100,795——
Air Bags263%66,000——
Exterior Lighting232%42,000——
Electronic Stability Control (esc)101%57,400——
Fuel System, Gasoline101%126,662——
Forward Collision Avoidance91%———
Suspension61%29,800——
Visibility/wiper61%74,810——
Wheels50%45,000——
Lane Departure30%———
Tires30%11,000——
Visibility30%63,550——
Seat Belts20%62,000——
Seats20%85,051——
Equipment10%80,000——
Firerelated10%160,000——

One complaint can list several problem areas, so shares can add up to more than 100%.

Complaints by year received

Peak: 2023, with 159 complaints
2014: 2201422015: 162015162016: 222016222017: 412017412018: 642018642019: 10820191082020: 992020992021: 832021832022: 13620221362023: 15920231592024: 11820241182025: 11120251112026: 50202650

n = 1,009 complaints · Source: NHTSA

2015 KIA Optima recalls (4)

Tap a recall to see the problem, the risk and the fix.

Service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/modulePark outsideSep 25, 2023 · NHTSA campaign 23V652000 · 1,730,192 vehicles

Problem: Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.

Risk: An engine compartment fire while parked or driving can increase the risk of injury.

Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.

Service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/modulePark outsideMay 10, 2021 · NHTSA campaign 21V331000 · 440,370 vehicles

Problem: Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

Risk: An electrical short in the HECU increases the risk of a fire while parked or driving.

Fix: Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. Dealers will install a new multi-fuse, and inspect the HECU for leaks, replacing the HECU if necessary, free of charge. Owner notification letters were mailed on July 2, 2021. This recall supersedes previous NHTSA recall number 20V-519. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC212.

Service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/modulePark outsideAug 27, 2020 · NHTSA campaign 20V519000 · 440,370 vehicles

Problem: Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

Risk: If the HECU short circuits, there is an increased risk of an engine compartment fire.

Fix: Kia will notify owners, and dealers will inspect the HECU for leaking brake fluid and replace the HECU if necessary, free of charge. Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. The recall began October 20, 2020. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC197.

Engine; fuel system, gasoline:delivery:hoses, lines/piping, and fittingsDec 19, 2018 · NHTSA campaign 18V907000 · 71,653 vehicles

Problem: 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. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.

Risk: A fuel leak in the presence of an ignition source can increase the risk of a fire.

Fix: 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. Kia's number for this recall is SC172.

To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.

NHTSA defect investigations

  • Hyundai and Kia ABS Module Fires (AQ23002) — opened Nov 17, 2023, still open.
  • Loss of Motive Power (DP22003) — opened Sep 12, 2022, closed Dec 12, 2023.
  • Throttle control system vulnerabilities (DP21003) — opened Nov 12, 2021, closed Jun 20, 2023.
  • Electrical overstress (EA19001) — opened Apr 19, 2019, closed Sep 19, 2024, led to recall 20V024.

Recent owner reports

Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.

The contact owns a 2015 Kia Optima. The contact stated that while pulling into the driveway, the ABS warning light remained illuminated after the vehicle was powered off. The contact stated that the parking brake warning light unexpectedly illuminated while the vehicle was being operated. The…

Service Brakes, Hydraulic · received Sep 29, 2026 · NHTSA complaint 11767775

My energy in my car started messing up with only 150,000 miles it had a long knocking sound and it would not got over 20 miles while driving

Engine · received Sep 20, 2026 · NHTSA complaint 11765682

My 2015 KIA optima experienced a catastrophic engine fire while I was driving. There was no warning, I just heard a boom in the engine bay the breaks stopped working and all electrical cut out. As I'm coasting, because I'm unable to stop, flames started to come in through under the dash. I couldn't…

Engine · received Aug 24, 2026 · NHTSA complaint 11759158

The contact owns a 2015 Kia Optima. The contact stated that for over 8 years, the vehicle was experiencing excessive oil consumption. There was no warning light illuminated. The contact became aware that there was an oil leak on the ground underneath the vehicle. The vehicle was taken to the dealer…

Engine and Engine Cooling · received Aug 20, 2026 · NHTSA complaint 11758211

The engine in my vehicle failed while putting the car into reverse to back into my garage. I thank God I wasn't on the road when this happened. I took the car into a mechanic who confirmed that the engine was locked and that the car was very low on oil(even though I had my oil changed by him a few…

Engine · received Aug 19, 2026 · NHTSA complaint 11758113

Other KIA Optima years

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See all KIA Optima problems by year, every KIA model, or the KIA VIN decoder.

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Frequently asked questions

What are the most common problems with the 2015 KIA Optima?

Owners most often report engine, unknown or other, electrical system problems. The top one, engine, accounts for 622 complaints.

Was there a recall on the 2015 KIA Optima?

Yes, 4 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.

Was the 2015 KIA Optima a good year?

Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Optima model years, the 2015 has far more complaints than most years, and NHTSA rates it 5 out of 5 stars overall in crash tests. Always get a pre-purchase inspection and check the VIN for open recalls.