88 of the 1,263 complaints about the 2012 KIA Optima are about the braking system — 7% of everything reported for this model year. Half of the failures with a mileage on record happened before 77,000 miles.
88
Complaints
4
Crashes
9
Fires
2
Injuries
Filed with NHTSA, in their own words.
SERVICE BRAKES
I bought this car February 2026 when I drove it on the freeway they car felt wiggly not the axle is broke and the wheel bearings stop the car from going
NHTSA complaint #11741928 — an unverified report by a vehicle owner.
SERVICE BRAKES
When the brake pedal is pressed on the brakes will grab. It snatches the car kinda hard. Also when you give the car gas it will hesitate and will not accelerate. Another with the gas is that you can be driving at a higher speed such as 45 to 55 or so and you press down the gas pedal like your going into passing gear and it will not accelerate it’s like it’s trying to stop. Feels like the car is gonna fall on down onto itself and it loses power.
NHTSA complaint #11721209 — an unverified report by a vehicle owner.
SERVICE BRAKES
•I’m not sure what failed, the car was parked. And yes it’s available for inspection. •I had just parked the car coming from work and at the time. If I was in the car any longer than 5 more minutes it possibly could’ve been catastrophic. • All I know as of right now is that 5 days ago, it was escalated and I received a case number and a case manager 3 days ago. •The car has not been inspected •not that I’ve noticed, the engine light was on a week before the accident occurred, after getting off of work and the car system said to check my breaks. I had someone take me home since my car was undrivable. And the next morning I was going to have it towed but everything was working properly. The engine light was gone.
NHTSA complaint #11717968 — an unverified report by a vehicle owner.
SERVICE BRAKES
ABS system failing
NHTSA complaint #11689722 — an unverified report by a vehicle owner.
SERVICE BRAKES
While in park and driving the instrument panel will show, "Check Brake" and "Hybrid System Warning! Safely Stop and Do not Drive". This is accompanied by the engine not responding to the gas pedal. The brake pedal will also loose pressure and once pushed the brakes will lock up making a grinding noise. The problem has not been able to be duplicated by the dealer. However there are multiple forms and online communities dedicated to try to resolve this issue since it's so prevalent. This issue causes a major saftey hazard as the car comes to a grinding halt and does not respond to the driver. From online sources it seems the problem is prevalent across years and models and only tied to hybrid vehicles.
NHTSA complaint #11688408 — an unverified report by a vehicle owner.
SERVICE BRAKES
Car simply started for me after work this past Thursday @4 pm I dove down the street and for about 5 mins and had to turn around due to me leaving something at work. When I arrived back at work I parked and cut my car off as I normally do and when I returned to start it back up it never did. I have previously been having to add 5 quarts of oil frequently at least once or twice a month for the past 7 months since last year. Was told my car had an oil consumption problem by a previous mechanical shop last year. Noticed that these cars have recalls on them and that my car and year do fit the requirements. I do owned my car with the Title in hand. It’s NOT a salvaged title. I have a service appointment on the 24th of June next Tuesday at Kia of Gastonia located in Gastonia, NC. I have to get my car towed to this establishment on Monday or the morning of my appointment. I’m asking that this situation can be properly investigated and properly and honestly handled under KIA policy. My name is [XXX] my # is [XXX] thanks INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11668342 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The contact stated that after starting the vehicle and driving approximately 5 minutes, then pulling into a carwash and placing the vehicle in the park, the vehicle lost power and a thick gray smoke began coming from underneath the hood of the vehicle. The vehicle caught fire. The contact was able to exit the vehicle however, the fire had consumed the vehicle, and caused the building the vehicle was parked in front of caught fire. The fire department had put out both fires. The vehicle was towed and deemed totaled. A police report was filed. The contact stated they were pregnant at the time of the fire and ended up having a miscarriage. Medical assistance was needed. The dealer was not contacted. The manufacturer was informed of the failure and opened a case. The failure mileage was approximately 120,000. Parts distribution disconnect.
NHTSA complaint #11663037 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Kia Optima. The contact received notifications of NHTSA Campaign Numbers: 22V560000 (STRUCTURE) and 23V652000 (SERVICE BRAKES, HYDRAULIC). The contact stated while the vehicle was parked at the residential driveway and starting the vehicle, smoke started emitting from under the hood. The contact opened the hood and discovered smoke primarily emitting from the front passenger side of the vehicle. No warning lights illuminated. There were no injuries sustained. The contact was unsure if a fire report was filed and a police report was not filed. The fire was extinguished by the contact with three fire extinguishers however, the fire department used water to be certain the fire was extinguished. The vehicle had damages due to the fire, however, it was not destroyed. The vehicle was taken to the dealer where unknown repairs were needed however due to costs was taken back to the residence and remained in the contact's possession. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and a case was created. The failure mileage was approximately 145,000.
NHTSA complaint #11647487 — an unverified report by a vehicle owner.
SERVICE BRAKES
The car instrument panel showed two messages "check brake " and also "hybrid system warning safely stop and do not drive" The brakes stopped working and the car will not accelerate. I stopped reset the battery and started the car as if nothing was wrong. this happens intermittently when i drive the car for over an hour. the brakes are brand new the brake cylinder is working fine. only when this warning come up the brakes feel like they are grinding. a lot of owners are complaining about this. I am wondering if there is a recall for this issue.
NHTSA complaint #11640117 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC:FLUID
The contact owns a 2012 Kia Optima. The contact stated that while driving at 55 -60 MPH, the vehicle lost automotive power and stalled. The contact was able to pull over to the side of the road. The contact became aware of smoke emitting from the vehicle. The check engine warning light was illuminated. The vehicle was towed to the residence and then to an independent mechanic where it was diagnosed that the engine failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The vehicle was towed to the residence and was not being driven. The failure mileage was approximately 150,000.
NHTSA complaint #11634952 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owned a 2012 Kia Optima. The contact stated that while at a stop light, smoke and flames were suddenly present coming from the engine compartment. The fire department was called to the scene and extinguished the fire. During the incident, the vehicle was destroyed and later towed to an inbound facility. No report was taken and no injuries were reported. The cause of the fire was not determined. The local dealer and manufacturer were not yet contacted. The contact was informed that the VIN was included in the NHTSA Campaign Number: 23V652000(SERVICE BRAKES, HYDRAULIC). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 151,000.
NHTSA complaint #11625883 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Kia Optima. The contact stated while driving at undisclosed speeds, the brake pedal was depressed and went to the floorboard. The contact stated that several times the brake pedal was depressed approximately a half-inch to an inch. There were no warning lights illuminated. The vehicle was taken to an independent mechanic, who replaced the brake master cylinder. The vehicle was repaired, but the failure recurred. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 35,000.
NHTSA complaint #11621075 — an unverified report by a vehicle owner.
SERVICE BRAKES
The contact owned a 2012 Kia Optima. The contact stated that while driving at an undisclosed speed, smoke started to enter the vehicle. No warning lights were illuminated. The contact stated a bystander yelled at her telling her that the vehicle was on fire, and the contact exited the vehicle. The vehicle then exploded. The fire department was able to extinguish the fire. A police report and a fire department report were filed. No injuries were sustained. The vehicle was towed to a tow yard, and then it was towed to a Kia dealer. The vehicle was deemed a total loss by Kia. The contact was relating the failure to an NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) letter she received. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 100,000.
NHTSA complaint #11594772 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.
NHTSA complaint #11590233 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Kia Optima. The contact received notification of NHTSA Campaign Numbers: 22V560000 (Structure) and 23V652000 (Service Brakes, Hydraulic) however, the dealer declined to perform the recall repair because the vehicle was a Canadian-manufactured vehicle. The vehicle was not repaired. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
NHTSA complaint #11586604 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Kia Optima. The contact stated while at a complete stop at the traffic light, she noticed that there was smoke coming from underneath the driver's side of the hood. Additionally, the vehicle stalled and failed to restart. The check engine warning light was illuminated. The contact exited the vehicle. The contact stated that there were flames coming from underneath the hood. The fire department extinguished the fire but declined to provide a copy of the report to the contact. No police report was filed. There were no injuries sustained. The vehicle was pushed into a parking lot. The vehicle was then howled to the residence the following day. The dealer was notified of the failure. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Numbers: 23V652000(Service Brakes, Hydraulic) and 17V224000(Engine and Engine Cooling). The manufacturer was notified of the failure and sent a field inspector, who inspected the vehicle at the residence. The field inspector informed the contact that a complete inspection of the vehicle could not be performed because the vehicle was not lifted. The contact stated that the inspector mainly inspected under the hood of the vehicle and took photos. The manufacturer later informed the contact that the vehicle repair could not be covered because the incident had not occurred due to the recalls based on the field inspector report. The vehicle was not diagnosed or repaired. The failure mileage was approximately 222,100.
NHTSA complaint #11586122 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11582596 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11582708 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11580884 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11580383 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11580502 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Kia Optima. The contact stated that the brake lights continuously remained illuminated. The taillight bulbs blew out on several occasions. The check engine warning light was illuminated. Additionally, there were several unknown warning lights flashing. While driving at various speeds, the vehicle hesitated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The contact stated that the failure was related to NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic). The manufacturer was not contacted. The failure mileage was approximately 24,000.
NHTSA complaint #11578197 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11572883 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11570754 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11570033 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11569496 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving at an undisclosed speed, there was white smoke coming from the rear of the vehicle. In addition, the contact smelled burning fumes on the interior of the vehicle. The vehicle was taken to the dealer. The contact stated that the dealer cleaned up some spilled oil underneath the hood. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 100,000.
NHTSA complaint #11569049 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
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 the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint #11567973 — an unverified report by a vehicle owner.
SERVICE BRAKES
While driving will will get “hybrid system. Warning check brakes”. Car will loose acceleration. After turning car off for five minutes, error goes away and car drives. Happens for no reason and has occurred 4 times in the last week
NHTSA complaint #11567988 — an unverified report by a vehicle owner.
SERVICE BRAKES, HYDRAULIC
The contact owns a 2012 Kia Sorento. The contact stated that the air bag warning light was illuminated. 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 local dealer was contacted. 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. The failure mileage was 129,000. VIN tool confirms parts not available.
NHTSA complaint #11567212 — an unverified report by a vehicle owner.