2012 Kia Optima problems & reliability
919 owner complaints filed with NHTSA for the 2012 Kia Optima, alongside 5 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
22 complaints report injuries (34 injured).
Federal crash records (FARS 2020–2023): 2012 Kia Optima vehicles were involved in 72 fatal crashes with 41 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine | 398 | 43% |
| Steering | 188 | 20% |
| Electrical System | 122 | 13% |
| Unknown OR Other | 87 | 9% |
| Power Train | 54 | 6% |
| Service Brakes | 52 | 6% |
| Air Bags | 48 | 5% |
| Fuel/propulsion System | 42 | 5% |
| Vehicle Speed Control | 40 | 4% |
| Structure | 39 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 82,120 miles (middle 50% between 52,614 and 120,000 miles), based on 603 complaints that included mileage.
Complaints by incident year
What owners report
“Steering flexible coupling was a recall over 10 years ago, it was replaced. The steering wheel “sticks” and it’s catching again and they will not do anything. I’m not happy that this is an ongoing problem and can be dangerous if it sticks at the wrong time!”
Steering · filed Jul 29, 2026
“The dealer is refusing to replace the engine under the previously completed Safety Recall Campaign SC147 (NHTSA Campaign 17V224000). The engine is currently exhibiting clear signs of connecting rod bearing failure—the exact mechanical hazard SC147 was issued to address. The dealership inspected the vehicle, confirmed…”
Engine · filed Jul 29, 2026
“Entire vehicle got burned while driving on the highway, the car is available at the impound shop for inspection. I was driving the car on the highway during the hours of rush hour when the car started burning, there were many drivers around on the other lanes. The NY Fire Department battalion and the NYPD responded to…”
Unknown OR Other · filed Jul 22, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Hyundai and Kia ABS Module Fires
Audit Query AQ23002 · opened Nov 17, 2023 · open
- Loss of Motive Power
Defect Petition DP22003 · opened Sep 12, 2022 · closed Dec 12, 2023
- Engine Fires
Engineering Analysis EA21003 · opened Dec 22, 2021 · closed Feb 5, 2024 · led to recall 23V877
- Throttle control system vulnerabilities
Defect Petition DP21003 · opened Nov 12, 2021 · closed Jun 20, 2023
- Non-crash Vehicle Fires
Preliminary Evaluation PE19004 · opened Mar 29, 2019 · closed Dec 22, 2021 · led to recall 21V844000
- Non-crash Vehicle Fires
Defect Petition DP18003 · opened Aug 21, 2018 · closed May 10, 2019 · led to recall 19V204000
- Scope and Timeliness
Recall Query RQ17003 · opened May 18, 2017 · closed Dec 22, 2021 · led to recall 19V101000
Technical service bulletins
241 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2012 Kia Optima. The 10 most recent:
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of…
CS2312_TSB_R2 · Service Bulletin/Repair Instructions · issued Jun 8, 2026
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of…
TSB_CS2312_R1 · Service Bulletin/Repair Instructions · issued Feb 19, 2026
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin provides information to install a Theft Deterrent Ignition Cylinder…
TSB_CS2312 · Service Bulletin/Repair Instructions · issued Dec 18, 2025
CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION (CS2312) - This document is the owner notification advising that Kia is conducting Customer Satisfaction Campaign. A software upgrade that addresses the social media…
CS2312_OWNR · Other · issued Dec 17, 2025
TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area…
TSB_TRA046_R5 · Service Bulletin/Repair Instructions · issued Apr 17, 2025
TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar…
TSB_ENG222_R8 · Service Bulletin/Repair Instructions · issued Apr 3, 2025
TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar…
TSB_ENG222_R7 · Service Bulletin/Repair Instructions · issued Feb 28, 2025
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are…
CS2303_TSB_R4 · Service Bulletin/Repair Instructions · issued Jun 5, 2024
This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced.
TSB_TRA046_R4 · Service Bulletin/Repair Instructions · issued May 16, 2024
TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this…
PI1803YZ_TSB_R7 · Service Bulletin/Repair Instructions · issued Mar 22, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2012 Kia Optima has 5 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2012 Kia Optima?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 82,120 miles — budget accordingly if the car is approaching that mileage.