Problems · NHTSA complaints

2011 Kia Optima problems

Owners filed 594 complaints about the 2011 Kia Optima with NHTSA between Feb 2011 and Oct 2026. The most-cited component is engine (256).

Complaints
594
Filed with NHTSA
Crashes
23
Reported by owners
Fires
33
Reported by owners
Injuries
19
People reported injured
Deaths
1
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine256
  2. Steering100
  3. Exterior lighting88
  4. Electrical system63
  5. Air bags31
  6. Service brakes26
  7. Power train25
  8. Fuel/propulsion system23
  9. Service brakes, hydraulic21
  10. Structure21
  11. Vehicle speed control19
  12. Suspension18
  13. Wheels9
  14. Engine and engine cooling8

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 30, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
201132
201222
201314
201410
201539
201679
201778
201865
201978
202052
202133
202214
202316
202442
20258
202612

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine

256 reports6 crashes22 fires
“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. Their August 31, 2026 repair order documents my complaint and states that the vehicle would die while driving and that this problem “DID NOT BEGIN UNTIL AFTER RECALL COMPLETED.” The repair order instructs the technician to inspect whether the recall was completed properly and diagnose the concern. I am concerned because the HECU recall involves an electrical short/overcurrent condition and Kia's recall documentation specifically identifies burning/melting smell and smoke as warning symptoms. I am requesting that NHTSA document this complaint and review whether the post-recall stalling and burning smell could be related to the HECU recall repair or indicate a continuing safety problem.”
Owner complaint to NHTSAFiled Sep 7, 2026Electrical system, Engine, Fuel/propulsion systemODI 11762544

Steering

100 reports
“The contact owns a 2011 Kia Optima. The contact stated while driving 25 MPH, there was a notchy feel in the steering wheel. The vehicle was taken to an independent mechanic, where it was diagnosed, and the failure was linked to TSB Number: CHA060. The mechanic determined that the steering coupler needed to be replaced. The mechanic ordered the part for the repair. The vehicle was not yet repaired. The dealer was notified of the failure. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under TSB Number: CHA060; due to the mileage on the vehicle. The failure mileage was approximately 121,000.”
Owner complaint to NHTSAFiled Oct 30, 2024SteeringODI 11622770

Exterior lighting

88 reports2 fires1 related recall
“I have replaced the headlights in my 2011 Kia Optima multiple times but no matter what without the brights on, the road is not at all illuminated making it impossible to see at night. When you look at the car head on the lights look as if they would be incredibly bright, but I believe due to faulty reflective lining on the interior of the headlight housing, even though the bulb may shine brightly, it does not get reflected properly onto the surface of the road causing serious safety concerns.”
Owner complaint to NHTSAFiled Jun 2, 2026Exterior lightingODI 11741618

Electrical system

63 reports1 crash8 fires
“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 fire. The car is totaled.”
Owner complaint to NHTSAFiled Aug 20, 2026Electrical system, Engine, Fuel/propulsion systemFire reportedODI 11758178

Air bags

31 reports10 crashes1 related recall
“About six months ago, I lost the heated steering wheel functionality in my steering wheel, then from there, I slowly lost functionality like cruise control, and the most recent now my airbag and horn do not work. If you press on the horn, it is silent, and the airbag light has been illuminated consistently for the last couple of months. I had this issue diagnosed and it came up with the codes of B1346. And B1481. After some research, these issues are the result of a bad clock, spring and cause the airbag and horn not to work. Additionally, this issue is known to this model the 2011 Kia Optima, and has been recalled in most production cases of this vehicle, but my vehicle is not included. I received a quote for $876 from a dealership to get this corrected, but it should be included in the recall.”
Owner complaint to NHTSAFiled Jul 13, 2026Air bags, Vehicle speed control, Unknown or otherODI 11749934

Service brakes

26 reports5 crashes
“The car just keep doing weird stuff with the lights. It want go off all the time the key went work the cv joints are popping. Have to trigger the battery sometimes to start up”
Owner complaint to NHTSAFiled Jun 21, 2025Electrical system, Wheels, Service brakesODI 11668296
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.