Home · 2012 Kia Optima · Complaints

What 916 owners told NHTSA about the 2012 Kia Optima

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (916)Crash / fire / injury (106)Engine (397)Steering (187)Electrical system (122)Brakes (87)Fuel system (54)Transmission & drivetrain (54)Airbags (48)Speed control (40)Body & structure (39)Lights (31)

122 of 916 complaints match · Electrical system · clear filters · page 2 of 5

Dec 9, 2023Electrical system

The transmission automatic, shifter somehow disconnected from transmission, while driving, once it happened, stepping in gas pedal only revved engine, on highway in traffic, glided to to side of highway, and brakes did work, no transmission, dealer later stated and have dealer report, the piece that engages the trans to the shifter was defective and broke or fell off during vehicle operation, put a new 1 on, and then I could use gears again, regardless when it happened, any driver lost all power to stay, go or keep w, traffic, only attempt could be to safely get off highway.

NHTSA ODI 11559248

Dec 8, 2023BrakesElectrical systemEngine

The contact owns a 2012 Kia Optima. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The contact stated that while starting the vehicle, she noticed smoke coming from underneath the hood of the vehicle. Additionally, the contact stated that the taillights remained illuminated while the vehicle was turned off. There was no warning light illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue, but no assistance was provided. The failure mileage was approximately 130,000. VIN tool confirms parts not available.

NHTSA ODI 11559101

Dec 3, 2023Electrical systemLights

My car started losing its lights one by one. I lost the front right light first, then yhe right back side light, and now the brakes lights. I replaced all the bulbs and still does not work. Then my car just cut off while driving with no notification. I towed it in to Mavis. They checked and said the battery was not keeping charge. I paid to replace the battery ,belt and alternator. Four days later my check engine light, battery indicator, airbag indicator, door indicator came on and still is on.

NHTSA ODI 11558164

Aug 30, 2023Electrical systemBrakes

While driving down the highway the cars Hybrid warning system came on causing the car to lose all breaks and lose power. The component of the vehicle that failed is the HECU. Kia already did a recall for this but did not include the hybrids for the recall. This is very unsafe losing all breaking power, driving 65 mph down the highway with my children in the car! There was absolutely no warning, no check engine lights nothing. I had it towed to the dealership and upon them driving it, it also cut completely out and did it to the person at the dealership. This is going to cause someone to lose their life and when you call Kia, it’s the same run around that your year wasn’t included in the recall yet there was a whole lawsuit about this.

NHTSA ODI 11541785

May 16, 2023Electrical systemSeat beltsSeats

2012 Kia Optima EX with 67000 miles driver-side seatbelt dash warning goes off even it is buckled securely while driving.

NHTSA ODI 11522265

May 3, 2023Electrical systemEngine

the engine failed at 152000. it had a recall .so i took it in at 91000 and complained of the rod nock.and was told they checked the rod bearing clearance .and found nothing .i again took the car in again at around 111000 miles and complained of the rod nock again.and again was told they see no problem now im with out a car

NHTSA ODI 11520278

Apr 30, 2023Electrical systemSpeed controlDriver assistance

Here I explain the problem better, when the car is at a low speed, such as when parking, the gasoline engine starts and it starts to rev up to 6k RPM and after that it brakes and hits hard, this would be dangerous on the highway and another problem is that when accelerating it has a delay of 1-3 seconds, and I want to report this problem to see if there is any solution

NHTSA ODI 11519699

Mar 15, 2023Electrical systemAirbagsSpeed control

My airbag light is on and I have no power to my steering wheel controls including my horn.

NHTSA ODI 11511985

Feb 27, 2023Electrical systemEngineFire

I was driving down the highway going 75 mph and all of a sudden my car tells me pull over safely do not drive and it shut down while I'm driving. It never turned back on. It started smoking and you could see orange light coming through the vents. I was stuck on a [XXX] bridge for 4 hours and I missed court that day. I called Kia and they came to pick up my car. They said it was free because my car has been recalled but ever since they've had it, they stop answering my phone calls and emails and now they are trying to charge me 5000 to get my car back and fixed. Before any of this happened, I noticed an oil leak at the gas station but was unsure whether it came from my car or not. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA ODI 11509246

Oct 17, 2022Electrical system

Rearview camera does not display when vehicle is in reverse. Is this system required to comply with FMVSS 111 even if it is out of the vehicle manufacturer's warranty period?

NHTSA ODI 11489507

Sep 28, 2022SteeringElectrical systemBody & structureCrash

Vehicle was broken into and stolen…steering wheel column damage, wheel locked, wreck…usb cord used to crank car..police report filed #2209013764ME

NHTSA ODI 11486990

Aug 3, 2022Electrical systemEngineFuel system

Engine light keeps flashing and car stalls and will not go over 45 mph. One incident happened on a busy highway as merged on and was almost hit by a tractor trailer from behind.

NHTSA ODI 11477311

Jul 6, 2022Electrical systemEngineFire

My car caught on fire while driving from somewhere near the engine. The fire was so severe that fire department nor my insurance company were able to determine cause of fire and I’d only had vehicle for 45 days, it was a single owner with no accidents and maintained its entire life up to that point. I am requesting someone to examine vehicle and tell me how this possibly happened.

NHTSA ODI 11472604

Jun 17, 2022Electrical system

The speedometer quits working, the car will not shift into gear after parked and turned off, all the dash lights come on. You have to hit the reset button on the gear shift to get the car to do anything.

NHTSA ODI 11469736

Oct 20, 2021Transmission & drivetrainElectrical system

Every time i stop at a light my car starts to shake and vibrate. Now the check engine is on and my car is making weird noises, going at higher speeds

NHTSA ODI 11437471

Sep 17, 2021Electrical systemLightsBrakes

The brake light stays on.. causing the battery to drain. Even the vehicle is completely stopped / ignition off.

NHTSA ODI 11433345

Jun 26, 2021Electrical systemEngine

I driving to park,I heard a loud popping noise and i them preceeded to pull out the driveway and al’s 5 minutes in the drive the KIA hybrid warning system came on and then told me to park the ending at the nearest location to park. the car started smoking real lot bad and me and my kid exited the vehicle because of all the smoke. the oil was everywhere on the car, on the motor, leaking out of the car.i then got car towed back home

NHTSA ODI 11422402

May 30, 2021Electrical systemEngineFuel system

Car started idling and running rough out of no where. When I put the computer diagnostic on it it tells me there's problems with the fuel rail pressure sensor. Also the car won't go into drive or reverse but nothing is wrong with the transmission?

NHTSA ODI 11419045

Apr 30, 2021Electrical systemEngine

THE ENGINE WON'T TURN OVER I JUST BOUGHT THIS CAR TOO

NHTSA ODI 11414676

Mar 27, 2021SuspensionElectrical systemBrakesCrash5 injuries

BRAKES SQUICK EVEN AFTER REPAIR AND REPLACEMENT AND HAS A SLOWER RESPONSE TIME THEN USUAL AND CAUSED A REAR END ACCIDENT, COOLING AND HEATED SEATS STOPPED WORKING ON THE DRIVER SIDE WHICH I MET OWNERS OF MY EXACT CAR SAID THE SAME THING HAS HAPPENED TO THEM, AND THE PASSENGER SEAT CONTROLLERS DOESN'T WORK TO OPERATE ADJUSTABLE SEATS! THE SUSPENSIONS HAS BEEN BAD EVERY SINCE THE RECALL ON THE ENGINE; FOR SOME REASON IT WAS GIVING BACK TO ME WITH THAT PROBLEM FROM KIA DEALERSHIP. BACK-UP CAMERA IS MALFUNCTIONING FOR YEARS NOW AND CAR DOESN'T EVEN BEEP WHEN GETTING TOO CLOSE TO OBJECTS/OTHER VEHICLES ANYMORE EITHER FOR YEARS! I'M JUST FINDING OUT ABOUT THE PROCESS, RECALL LAWS AND RIGHT TO AN INVESTIGATION.*DT*JB

NHTSA ODI 11405106

Mar 14, 2021Transmission & drivetrainElectrical systemEngine

WHILE DRIVING MY 2012 KIA OPTIMA HYBRID ON THE FARTHEST LEFT LANE OF THE FREEWAY, A WARNING MESSAGE POPPED UP ON MY DASH BOARD THAT WAS SOMETHING SIMILAR TO "SAFTLEY PULL OVER AND DO NOT DRIVE VEHICLE." I BEGAN TO CHANGE LANES TO BE ABLE TO EXIT THE FREEWAY AND AS I WAS APPROACHING THE EDITS STOP LIGHT THE MOVING HEHICLE SEEMED TO LACK MUCH POWER. I WAS LUCKY ENOUGH TO HAVE THE CAR ROLL FAR ENOUGH ON MOMENTUM TO GET ME OUT OF THE WAY OF A VERY BUSY ROAD. IT WAS A MIRACLE THAT THE CAR ROLLED TO THE SPOT IT DID BECAUSE THAT HAPPENED TO BE THE ONLY PLACE THE SHOULDER COULD FIT MY CAR. I HAD IT SENT TO KIA DEALERSHIP AND IT TOOK THEM ALMOST AN ENTIRE WEEK TO FINALLY HAVE AN IDEA OF WHAT THE PROBLEM COULD BE. ENGINE SEIZED AS THE MAJOR PROBLEM AND OFFERED TO REPLACE IT FOR ABOVE $8000! THE CAR ISN'T EVEN WORTH THAT MUCH! COME TO REALIZE THERE WAS A RECALL ON MY ENGINE SO I AM NOW WAITING UNTIL KIA TECH SUPPORT REACHES OUT TO MY MECHANIC FOR THE APPROVAL OR DENIAL. I BOUGHT THIS USED CAR ABOUT 30 DAYS FROM TODAY'S DATE WITH 80K MILES

NHTSA ODI 11402832

Mar 11, 2021Electrical systemInterior Lighting

TL* THE CONTACT OWNS A 2012 KIA OPTIMA. THE CONTACT STATED THAT AFTER TURNING OFF AND EXITING THE VEHICLE, THE INTERIOR LIGHTS REMAINED ILLUMINATED. DUE THE FAILURE, THE BATTERY WAS DRAINED ON SEVERAL OCCASIONS REQUIRING A JUMP START TO BE ABLE TO START-UP AND DRIVE THE VEHICLE. ADDITIONALLY, THE BATTERY HAD BEEN REPLACED TWICE WITHIN TWO MONTHS. THE CONTACT HAD TAKEN THE VEHICLE TO VISION KIA OF EAST ROCHESTER (201 E LINDEN AVE, EAST ROCHESTER, NY 14445) WHERE THEY INFORMED HIM THAT THE EXTERIOR WIRING NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 105,000.

NHTSA ODI 11400300

Mar 6, 2021Electrical system

I WAS PARKED IN THE PARKING LOT AT A GROCERY AND FOLDED MY SIDE VIEW MIRRORS UP AND BACK DOWN AND NOW THE MOTOR IN THE PASSENGER SIDE VIEW MIRROR WILL NOT STOP RUNNING. THE MOTOR RUNS DAY AND NIGHT AND THE MIRROR NO LONGER FOLDS LIKE IT'S SUPPOSED TO. I SEE THAT I AM NOT THE ONLY ONE THAT HAS HAD THE ISSUE WITH THE SIDE VIEW MIRRORS

NHTSA ODI 11399491

Mar 2, 2021SteeringTransmission & drivetrainElectrical system

I WAS IN THE PARENT PICK UP LINE TO PICK UP MY DAUGHTER AND I PLACED MY SHIFT IN PARK HOWEVER MY CAR CONTINUED TO DRIVE FORWARD AND SHIFT GEAR WAS STUCK. STEERING WHEEL BECAME STIFF AND I KEPT FOOT ON BRAKE TO SLOWING MANEUVER CAR TO A PARKING SPOT. ONCE IN PARKING SPOT CAR WOULD NOT TURN OFF AND EVEN THOUGH CAR WAS IN PARK ON THE SHIFT GEAR THE DRIVE MODE WAS ILLUMINATED. THE CAR FINALLY TURNED OFF FOR A FEW SECONDS AND THAN RESTARTED BY ITSELF AND REPEATED TO DO SO. I WAS FINALLY ABLE TO MOVE GEAR SHIFT AFTER ACCESSING THE SHIFT GEAR RELEASE LOCK HOWEVER THE SHIFT GEAR REMAINED IN DRIVE MODE. THEN ENGINE JUST COMPLETELY STOPPED TURNING ON. CAR WOULD NOT TURN, NOT DRIVABLE AND HAD TO HAVE IT TOWED FOR REPAIR.

NHTSA ODI 11398744

Feb 27, 2021Transmission & drivetrainElectrical systemEngine

CAR WILL NOT GET OUT OF IMMOBILIZATION PHASE, WITH EITHER KEY FOB WILL NOT UNLOCK TO USE PUSH TO START. ISSUE IS WASTE GATE ACTIVATOR FAILURE OR NEEDS ADJUSTMENT.

NHTSA ODI 11398150

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Working with the data? Download all 916 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2012 Kia Optima verdict →