2011 Kia Optima engine problems

Updated from NHTSA data · How we count

85 owners have reported engine problems with the 2011 Kia Optima, 48% of all complaints about this model year. The typical problem appeared around 114,000 mi.

Engine complaints
85
Crashes
2
Fires
4
Injuries
1
Related recalls
2
Median mileage
114,000 mi

Specific components reported

Engine covers: stalling, loss of power, oil consumption, overheating.

ComponentComplaints
Engine80
Engine and engine cooling5
Engine and engine cooling:engine:oil/lubrication1
Engine and engine cooling:engine:oil/lubrication:seals/gaskets1

Engine complaints across Kia Optima years

2200752008420098201085201121320124152013183201449820154022016157201713520189220191072020
Engine complaints by model year. The 2011 is highlighted.

Mileage when the problem appeared

2Under 10k210k–30k130k–60k1260k–100k18100k–150k10150k+
Complaints that list mileage, grouped by odometer reading.

Related recalls

  • Recall 18V907000Dec 19, 201871,653 vehicles
    ENGINE · FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

    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.

    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. Kia's number for this recall is SC172.

  • Recall 17V224000Mar 31, 2017618,160 vehicles
    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.

    Risk: Bearing wear may result in the engine seizing, increasing the risk of a crash.

    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. Kia's number for this recall is SC147.

What owners say

  1. Filed Oct 7, 202677,500 miCAEngine
    The contact owns a 2011 Kia Optima. The contact stated that while a family member was driving and exiting a parking lot, the vehicle turned off, causing the vehicle to lose power. The contact stated that there was a burning odor inside the cabin of the vehicle with an audible clicking sound coming from the starter motor. The vehicle was towed to a local authorized dealer. The contact referenced NHTSA Campaign Number: 17V224000 (Engine and Engine Cooling) and Kia Warranty…
    NHTSA complaint #11769738 · source
  2. Filed Sep 7, 2026TXElectrical SystemEngineFuel, Hybrid & EV Propulsion
    I own a 2011 Kia Optima, VIN [XXX]. My vehicle was taken to Rockwall Kia on August 25, 2026, for completion of NHTSA Safety Recall 23V-652 / Kia SC284TF involving the HECU fuse. The dealership replaced the HECU multi-fuse and label kit. Before the recall repair, the vehicle was operating normally. The same day I picked the vehicle up after the recall repair, the vehicle began dying while I was driving. I also noticed a burning smell. I returned the vehicle to Rockwall Kia.…
    NHTSA complaint #11762544 · source
  3. Filed Aug 20, 2026MIFireElectrical SystemEngineFuel, Hybrid & EV Propulsion
    I was having trouble with my left driver tire. 2 mechanics went to test drive the car to see what the problem was. As they were driving, the car died. They got it started but it ran horrible back to the garage. When they pulled in the driveway of the garage, the car started on fire. It was an engine fire but undetermined what exactly was the cause. The vehicle was looked over by the insurance claims adjustor. I am not sure if sluggish driving had anything to do with the…
    NHTSA complaint #11758178 · source
  4. Filed Jul 23, 2026FLEngine
    The vehicle's engine had previously been replaced once under Kia's Theta II engine recall/warranty program approximately five years prior to this incident. On the date of failure, the replacement engine catastrophically failed while the vehicle was in operation, resulting in the engine developing a hole in the engine block and becoming inoperable. Prior to the failure, the vehicle exhibited a "check engine" warning and symptoms consistent with connecting rod bearing failure.…
    NHTSA complaint #11752542 · source
  5. Filed Apr 20, 202635,000 miINFireTowedEngine
    The contact owns a 2011 Kia Optima. The contact stated that the vehicle caught fire while driving at 60 MPH on the expressway. No warning lights illuminated. The contact had some wires replaced prior to the failure. There were no reported injuries, air bag deployment or crash. The driver was able to pull over safely. The fire department was able to extinguish the fire. A police report was filed. The vehicle was towed to a tow lot. The local dealer was not contacted. The…
    NHTSA complaint #11732339 · source
  6. Filed Apr 8, 2026GAEngine
    I am submitting a complaint regarding my 2011 Kia Optima (VIN: [XXX] ), which is currently experiencing significant engine issues and is undrivable. This issue is currently being reviewed under Kia Case #XXX. This vehicle is part of the Theta II engine group that has been the subject of recalls, service campaigns, and extended warranty coverage due to known engine defects, including rod bearing failure and potential engine seizure. The vehicle has also received the Knock…
    NHTSA complaint #11729896 · source
  7. Filed Feb 9, 2026KYEngine
    I was driving in the highway doing about 80mph passing a semi truck when all of a sudden my vehicle went from 80 down to 50 mph and I was jerked forward. I thought I was rear ended but when I looked in my rear view mirror no cars were behind me. I looked down and noticed my engine light, battery light and oil light were on and turned down my music and could hear my engine was no longer running. Thankfully there wasn't much traffic and I was able to coast to the side of the…
    NHTSA complaint #11716837 · source
  8. Filed Oct 29, 2025TNEngine
    I was driving down the road with my 3 sons in the vehicle and all of a sudden the vehicle and engine seized completely up and turned off. I contacted kia dealership who advised me to bring it to kia of Johnson. I took it there and my vehicle has just been setting there. It's under warranty and backed by a theta2 class action lawsuit. And they still won't touch it and are very rude.
    NHTSA complaint #11696271 · source
  9. Filed Aug 21, 2025TNEngine
    The Engine locked up while driving down the highway at 60mph. Not possible for inspection vehicle currently broke down at shop. I barely had braking power to stop vehicle. Has been confirmed by Kia dealership. Yes vehicle has been inspected by vehicle manufacturer. Check engine light came on 5 seconds before locking up. Happened [XXX] at [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
    NHTSA complaint #11682278 · source
  10. Filed Mar 21, 202568,500 miPAEngine
    The contact owns a 2011 Kia Optima. The contact stated that upon starting the vehicle, there was an abnormal rattling sound coming from the engine. There was no warning light illuminated. The vehicle was taken to an independent mechanic who noticed that the engine oil level was abnormally low, and that there were no visible signs of an oil leakage. The oil level was topped off; however, within 3 weeks the oil level was abnormally low again. The vehicle was taken to a local…
    NHTSA complaint #11649717 · source
  11. Filed Jan 26, 2025CAEngine
    Engine is knocking with check engine ligh on. Kia has a recall on my car for metal shaving in the engine during manufacturing process. I took it to Kia dealer but they refused and said they wont cover it because it's a Salvage tile, and I thought Salvage tiles are covered if it's a a safety recall but they said it's not covered because Kia wont pay them for the repairs or the new engine.
    NHTSA complaint #11638574 · source
  12. Filed Sep 10, 2024WIEngine
    2 weeks ago my 2011 Kia Optima's engine died while driving. I am the 2nd owner of the car and bought it in summer of 2022 (not 2020). Before buying the car private sale, I sought my mechanics advice who told me Kia engines had issues going back to 2011. Before buying, my brother called the closest Kia dealership to confirm the owner was telling the truth that he had taken the car in for all safety recalls. Kia told my brother the engine and vehicle belonging to the VIN he…
    NHTSA complaint #11613866 · source

Other 2011 Kia Optima problem areas

  • Brakes (29)
  • Lighting (25)
  • Other / Unknown (24)
  • Electrical System (24)
  • Fuel, Hybrid & EV Propulsion (13)
  • Steering (11)
  • Airbags (9)
  • Acceleration & Cruise Control (7)
  • Body & Structure (6)
  • Transmission & Drivetrain (5)
  • Suspension (4)
  • Wheels & Tires (4)
  • Visibility & Wipers (3)
  • Driver Assistance & Safety Tech (2)

Back to all 2011 Kia Optima problems →

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology