The 2015 Kia Optima is associated with 1019 official NHTSA owner defect complaints and 4 safety recall campaigns in the federal safety database. The most frequently reported component area is Engine, accounting for 420 reports (41% of total complaints). EPA testing covers 4 certified vehicle configurations spanning 2.4l 4-cyl, 2l 4-cyl, and 2.4L 4-Cyl hybrid configurations. Gasoline and hybrid variants deliver 24 to 37 MPG combined.
Key Data Findings
- • NHTSA Owner Complaints: 1019 reports
- • Safety Recall Campaigns: 4 campaigns
- • Top Reported Defect Area: Engine (420 / 41%)
- • Safety Incident Signals: 31 crash / 76 fire / 20 injury reports
- • NHTSA Overall Safety Rating: 5 / 5 Stars
- • EPA Efficiency: 24–37 MPG (4 variants)
Data Note: Compiled directly from official NHTSA Office of Defects Investigation (ODI), NHTSA 5-Star Safety Ratings, and EPA FuelEconomy.gov databases.
| Variant | Engine | Drivetrain | Transmission | City | Highway | Combined | EV Range | Est. Annual Fuel Cost |
| Optima | 2.4L 4-Cyl | Front-Wheel Drive | Automatic (S6) | 23 MPG | 33 MPG | 26 MPG | — | $2,350 / yr |
| Optima | 2L 4-Cyl | Front-Wheel Drive | Automatic (S6) | 20 MPG | 30 MPG | 24 MPG | — | $2,550 / yr |
| Optima Hybrid Hybrid | 2.4L 4-Cyl | Front-Wheel Drive | Automatic (AM6) | 35 MPG | 38 MPG | 37 MPG | — | $1,650 / yr |
| Optima Hybrid EX Hybrid | 2.4L 4-Cyl | Front-Wheel Drive | Automatic (AM6) | 35 MPG | 38 MPG | 36 MPG | — | $1,700 / yr |
Data Boundary Note: EPA specifications are shown by certified vehicle configuration. NHTSA complaints and recall totals are recorded at the model-year level across all configurations.
| Tested Drivetrain / Cab Variant | Overall Rating | Frontal Crash | Side Crash | Rollover Rating | Rollover Risk |
| 4 DR FWD | | | | | 9.6% |
| Hybrid 4 DR FWD | | | | | 9.6% |
Active Driver Assistance Systems (NHTSA Recorded): Forward Collision Warning (FCW) is documented as No and Lane Departure Warning (LDW) is documented as No in official NHTSA records for tested 2015 Kia Optima models.
View complete 2015 Kia Optima crash test & safety breakdown →
Top Reported Problem Categories
Ranked by total consumer complaint submissions recorded by NHTSA
Data Attribution & Context: Complaints are self-reported by vehicle owners to NHTSA and represent unverified consumer submissions. Complaint volume does not equal a statistically controlled failure rate and is not adjusted for total vehicles sold or cumulative mileage driven.
View all 2015 Kia Optima problems & component breakdown (125 categories) →
Affected Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Defect Summary: Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.
Free Manufacturer Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.
Affected Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Defect Summary: Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
Free Manufacturer Remedy: Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. Dealers will install a new multi-fuse, and inspect the HECU for leaks, replacing the HECU if necessary, free of charge. Owner notification letters were mailed on July 2, 2021. This recall supersedes previous NHTSA recall number 20V-519. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC212.
Affected Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Defect Summary: Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
Free Manufacturer Remedy: Kia will notify owners, and dealers will inspect the HECU for leaking brake fluid and replace the HECU if necessary, free of charge. Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. The recall began October 20, 2020. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC197.
View all 2015 Kia Optima recalls & campaign history (4 campaigns) →