Photo: Vauxford / CC BY-SA 4.0 / Wikimedia Commons
Every generation
Power
Combined, EPA 2020
What owners say
Our take, from owner reports
Mixed sentiment with a strong generational divide.
8 problems reported (1 very frequent, 2 recurrent, 5 isolated) · high confidence
Problems owners report
- Very frequentCatastrophic engine failure (Theta II 2.4L/2.0T)
Connecting rod bearing failure leading to seized engine, often around 100,000-150,000 miles; also severe oil consumption. Covered under a manufacturer settlement with extended warranty, but process is often lengthy.
- RecurrentExcessive oil consumption
Engine burns oil at a high rate, potentially leading to damage if not monitored closely.
- RecurrentEngine replacement process hardships
Long repair times (weeks to months), difficulties with dealer service departments, out-of-pocket costs for rental cars and misdiagnoses despite warranty coverage.
+ 5 more issuesShow fewer
- IsolatedStiff ride quality
Notably in 2020 models, described as firm and transmitting too much road feedback, a change from older, softer-riding sedans.
- IsolatedSpecific component failures
Power-folding mirrors and window motors failing.
- IsolatedInfotainment/CarPlay connectivity issues
Requires high-quality cables or software updates; wireless adapters suggested as a workaround.
- IsolatedTheft vulnerability
For key-start models (primarily pre-2021), high risk of theft impacting insurance cost and availability.
- IsolatedHybrid battery failure
High replacement cost ($11k-$14k USD new from dealer, ~$2k USD for refurbished), typically occurring after 7+ years of ownership.
The version owners recommend
Insufficient owner data available to declare a consensus "best" trim or powertrain. Feedback is contradictory: some owners strongly recommend the V6 engine (available in earlier models) for its bulletproof reliability compared to the problematic four-cylinders, while others praise the top-tier SXL Turbo trim for its features and driving experience despite the inherent engine risk. For hybrid models, the EX trim is noted as well-equipped. The consensus is not on a specific version but on the critical importance of verifying engine recall status and warranty coverage regardless of trim.
Competitors to consider
Owners compare it most often with the Toyota Camry, Honda Accord, Hyundai Sonata, Mazda 6 and Ford Fusion.
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Overall sentiment
Mixed sentiment with a strong generational divide. Long-term owners of earlier models (pre-2011) report exceptionally high reliability and satisfaction, with examples reaching over 270,000 miles with minimal maintenance beyond oil changes. For the 2011-2019 generation, sentiment is sharply split. Many owners praise the cars for their comfortable ride, spacious interior, modern features, and overall driving experience, reporting trouble-free ownership for years. However, a very significant and recurring criticism centers on catastrophic engine failures, specifically with the Theta II 2.4L and 2.0L turbocharged four-cylinder gasoline engines. These failures, involving connecting rod bearing wear and excessive oil consumption, are described as a widespread, known defect leading to seized engines, often around 100,000-150,000 miles. While a manufacturer settlement provides extended warranty coverage for some of these failures, the process of getting an engine replaced is frequently described as lengthy, stressful, and sometimes involving out-of-pocket costs for rentals or misdiagnoses. This fundamental engine concern overshadows other noted issues like stiff ride quality in newer models, specific component failures (window motors, power-folding mirrors), and infotainment connectivity problems.
Positioning vs competitors
Positioned as a value-oriented midsize sedan offering more standard features and a more modern design than traditional segment leaders like the Toyota Camry and Honda Accord for similar money. Frequently compared directly to its corporate sibling, the Hyundai Sonata, which shares platforms and engines. Owners acknowledge that while the Optima can match or exceed Japanese rivals in terms of interior space, technology, and initial purchase price, its reputation for severe engine reliability issues places it well behind the Camry and Accord in long-term dependability. The Mazda 6 is noted as a sportier, more engaging alternative. The newer Kia K5 is identified as the direct successor model.
Recommended configurations
Strong, recurring recommendation to verify the vehicle's inclusion in the Kia engine settlement (kiaenginesettlement.com) and confirm the Knock Sensor Detection System (KSDS) software update has been performed. An extended warranty is highly recommended if the factory powertrain coverage is expired. For models susceptible to theft (key-start models, primarily pre-2021), checking insurance availability and rates is advised before purchase. Owners recommend a thorough pre-purchase inspection with a focus on engine health and maintenance records. For the 2011-2019 generation, there is a clear warning to avoid examples with branded (rebuilt/salvage) titles, as they are excluded from the engine settlement coverage.
General recommendations
Suitable for buyers who prioritize feature content, interior space, and styling at an attractive used price point, but who must be fully aware of and prepared for the potential engine failure issue. Essential steps include: 1) Checking the VIN for open recalls and engine settlement eligibility. 2) Obtaining and verifying complete maintenance records. 3) Budgeting for a potential extended warranty. 4) Getting a thorough pre-purchase inspection from a trusted mechanic. NOT recommended for buyers seeking a "set-it-and-forget-it" reliable transportation without diligent upfront research and risk acceptance. Best value may be found in well-maintained, high-mileage examples from the pre-2011 generation or in post-2020 hybrid models, though data on the latter is more limited.
Remarks
The dominant narrative for the 2011-2019 Optima is defined by the Theta II engine defects. Owner satisfaction is almost entirely conditional on whether they have experienced an engine failure and their experience with the warranty process. Those with replaced engines or trouble-free units often express high praise, while those going through failures describe significant frustration. The settlement provides a safety net but does not eliminate the inconvenience or anxiety. Data suggests vehicles manufactured for markets outside North America (e.g., Korea, Europe) may have different reliability profiles due to different production locations and engine options. The hybrid models are specifically noted by some owners as not having the catastrophic gasoline engine issues, though they carry the risk of high-voltage battery failure. Analysis based on owner discussions spanning model years 2007 to 2020.
Generation by generation
Owner insights per generation and US complaint/recall records (NHTSA).
Complaints and recalls by model yearWorst year: 2013. Years to avoid: 2019, 2018, 2016, 2015, 2014, 2013, 2012, 2011Source: NHTSA (US)Show table
Each year graded against the model's other years: Year Score. See all Kia Optima years to avoid
| Year | Complaints | Recalls | Most-reported area |
|---|---|---|---|
| 2020 | 152 | 0 | engine |
| 2019 | 634 | 1 | engine |
| 2018 | 478 | 3 | engine |
| 2017 | 305 | 4 | engine |
| 2016 | 761 | 5 | engine |
| 2015 | 1,021 | 4 | engine |
| 2014 | 620 | 7 | engine |
| 2013 | 1,440 | 10 | engine |
| 2012 | 1,028 | 6 | engine |
| 2011 | 628 | 6 | engine |
| 2010 | 75 | 1 | power train |
| 2009 | 116 | 1 | power train |
| 2008 | 144 | 3 | air bags |
| 2007 | 167 | 2 | air bags |
Complaint counts come from owner reports filed with the US National Highway Traffic Safety Administration. Higher-selling years naturally accumulate more complaints.
Recall notices64 on record · Source: NHTSA (US)Show recalls
2019 · forward collision avoidance: automatic emergency brakingcampaign 19V539000
Kia Motors America (Kia) is recalling certain 2019 Optima vehicles equipped with Gamma 1.6L Turbo-GDI or Theta II 2.0L Turbo-GDI engines. A software error in the Forward Collision-Avoidance Assist (FCA) system may cause the braking assist function to not engage when a stationary vehicle is detected.
2018 · hybrid propulsion systemcampaign 18V161000
Kia Motors America (Kia) is recalling certain 2017-2018 Kia Optima hybrid vehicles. These vehicles are equipped with a Voltage Protection Device (VPD), designed to protect the high voltage battery module, that may activate inadvertently.
2018 · latches/locks/linkages:trunk lid:latchcampaign 23V594000
Kia America, Inc. (Kia) is recalling certain 2016-2017 Rio, 2016-2018 Optima, 2017-2018 Optima Hybrid and Optima Plug-in Hybrid vehicles. The trunk latch base may crack, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
2018 · enginecampaign 21V844000
Kia Motors America (Kia) is recalling certain 2017-2018 Optima Hybrid and Optima Plug-In Hybrid vehicles. The connecting rod bearings inside the engine may wear prematurely, which can result in engine damage.
2017 · fuel system, gasoline:delivery:hoses, lines/piping, and fittingscampaign 18V907000
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.
2017 · hybrid propulsion systemcampaign 18V161000
Kia Motors America (Kia) is recalling certain 2017-2018 Kia Optima hybrid vehicles. These vehicles are equipped with a Voltage Protection Device (VPD), designed to protect the high voltage battery module, that may activate inadvertently.
2017 · latches/locks/linkages:trunk lid:latchcampaign 23V594000
Kia America, Inc. (Kia) is recalling certain 2016-2017 Rio, 2016-2018 Optima, 2017-2018 Optima Hybrid and Optima Plug-in Hybrid vehicles. The trunk latch base may crack, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
2017 · enginecampaign 21V844000
Kia Motors America (Kia) is recalling certain 2017-2018 Optima Hybrid and Optima Plug-In Hybrid vehicles. The connecting rod bearings inside the engine may wear prematurely, which can result in engine damage.
2016 · fuel system, gasoline:delivery:hoses, lines/piping, and fittingscampaign 18V907000
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.
2016 · air bags:frontal:driver side:inflator modulecampaign 17V007000
Kia Motors America (Kia) has recalled one 2016 Optima vehicle. In this vehicle, the end seal for the driver's frontal air bag inflator may not have been properly installed, possibly resulting in reduced inflation of the frontal air bag in the event of a crash.
2016 · power train:axle assembly:axle shaftcampaign 16V705000
Kia Motors America (Kia) is recalling certain model year 2016 Kia Optima vehicles manufactured November 13, 2015, to April 23, 2016 and equipped with a 2.4l engine. The right front axle driveshaft may crack and fail.
2016 · air bags:frontalcampaign 16V231000
Kia Motors America (Kia) is recalling certain model year 2016 Kia Optima vehicles manufactured November 10, 2015, to February 12, 2016. In these vehicles, a chemical enhancer required for the for the second stage deployment of the driver's frontal air bag was not loaded, resulting in the second stage not deploying in necessitating crashes.
2016 · latches/locks/linkages:trunk lid:latchcampaign 23V594000
Kia America, Inc. (Kia) is recalling certain 2016-2017 Rio, 2016-2018 Optima, 2017-2018 Optima Hybrid and Optima Plug-in Hybrid vehicles. The trunk latch base may crack, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
2015 · fuel system, gasoline:delivery:hoses, lines/piping, and fittingscampaign 18V907000
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.
2015 · service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/modulecampaign 20V519000
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.
49 older recalls not shown. Check nhtsa.gov with your VIN for the full history.
Specifications
2.4 MPI Sportmatic
2.4L 4-cylinder · 171 hp · FWD · automatic
Built 2018–2020