Head-to-head reliability
KIA Optima vs Honda Accord
How the KIA Optima and Honda Accord compare on NHTSA complaints, recalls and crash reports — and which is the lower-risk used buy.
Based on NHTSA owner-complaint & recall records
KIA Optima vs Honda Accord: The Optima has 6070 complaints over 10 years (607/yr) vs Accord's 4438 (444/yr). Optima's engine issues dominate, with 3069 complaints, while Accord's forward collision avoidance problems are notable (821). Accord has fewer crash-related incidents (160 vs 214). Source: NHTSA owner complaints.
The picture
Is the KIA Optima or Honda Accord more reliable?
A plain-English read on what the NHTSA record says about living with each vehicle.
KIA Optima
The KIA Optima, over the past decade, has been the subject of a high volume of owner complaints, averaging over 600 per year. The dominant issue is engine trouble, with many reports of sudden oil loss, check engine lights, and loss of power, even in well-maintained vehicles. This pattern suggests that engine reliability is a significant concern for long-term ownership, potentially leading to costly repairs or breakdowns.
Honda Accord
The Honda Accord, while also having a substantial number of complaints, averages fewer per year at around 444. Its issues are more spread across engine, electrical, and advanced driver assistance systems, with a notable number of complaints about forward collision avoidance and automatic braking systems acting unexpectedly. Owners also report electrical glitches and occasional engine problems, but the overall pattern is less dominated by a single catastrophic failure mode.
The numbers
Side-by-side NHTSA record
Lower is better in every category. The highlighted cell is the stronger result.
| Category | KIA Optima | Honda Accord |
|---|---|---|
| Total complaintsAll model years combined | 6,070 | 4,438 Better |
| Safety recallsFederal recall campaigns | 41 | 38 Better |
| Crash reportsCrash-related complaints | 214 | 160 Better |
| Complaints per yearAveraged across model years | 607.0 | 443.8 Better |
| Reported injuriesTied to owner complaints | 191 | 144 Better |
| Reported deathsTied to owner complaints | 9 | 3 Better |
Source: NHTSA owner complaints & recall records.
What actually goes wrong
The problems owners report
The most-complained-about systems on each vehicle — what fails, and what owners say in their own words.
KIA Optima
- 01ENGINE3,069
- 02UNKNOWN OR OTHER787
- 03ELECTRICAL SYSTEM720
- 04STEERING719
- 05SERVICE BRAKES453
Owners report engines losing oil without visible leaks, leading to low oil levels and potential engine damage. Symptoms include check engine lights, loss of power, and difficulty accelerating, even with regular maintenance.
Electrical issues often accompany engine problems, such as warning lights and sensor malfunctions. Some owners report that software updates, like those for emissions recalls, can cause transmission shifting issues, indicating potential software-related electrical problems.
While specific steering complaints are not detailed in the sample, the high number of steering-related complaints suggests owners may experience issues with steering responsiveness or noise, which could affect vehicle control.
“Out of town July 12th 2025 my 2020 Kia Optima engine started having problems. I tried to get to my hotel but it was obvious I was not going to make it. I pulled into the nearest station and was told my car had no oil. There were no signs of leaking oil and no…”
“I have kept up on regular oil changes and maintenance on my Kia which I bought new 5 years ago. My issues started when my car's orange check engine light came on, I experienced loss of power such as difficulty accelerating even at low speeds, especially up hi…”
Honda Accord
- 01ENGINE985
- 02ELECTRICAL SYSTEM863
- 03FORWARD COLLISION AVOIDANCE821
- 04UNKNOWN OR OTHER725
- 05SERVICE BRAKES592
Engine complaints include unusual noises and sudden system failures while driving, such as warnings for brakes, hill descent, and ABS, leading to loss of speed. These issues can be alarming and may indicate underlying engine or sensor problems.
Electrical problems range from tire pressure monitoring system (TPMS) warnings to rodent damage on wiring harnesses. Some owners report catastrophic tire failures after TPMS service, and others have experienced sunroof glass explosions, which could be linked to electrical or manufacturing defects.
Many owners report the automatic emergency braking and other driver assistance features activating unexpectedly, even on open roads, or displaying intermittent system errors. This can be a safety concern as it may cause sudden braking or loss of confidence in the vehicle's safety systems.
“I purchased this vehicle at 0 miles in July 2025 from Honda Accord in Pensacola Florida. I reported in July 2025 that there was a noise and I was unhappy with the vehicle and would like to exchange the vehicle within the 30 days months later, the noise got lo…”
“Vehicle drove normally in the morning commute. In the afternoon commute it started normally and as i approached highway speeds the alarms started showing up. the Brake, hill descent system, abs, critical failure. the vehicle started losing speed and could not…”
Official recalls
Safety recalls on record
Federal recall campaigns — the defect, the risk, and the fix. Confirm any open recall was completed before you buy.
KIA Optima — 41 recalls
The defect: 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.
The risk: Improper intervention of the Forward Collision-Avoidance Assist can increase the risk of a crash.
The fix: Kia will notify owners, and dealers will update the FCA software, free of charge. The recall began August 27, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC179.
The defect: 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.
The risk: If the VPD activates while the vehicle is being operated in Electric Vehicle (EV) mode, there may be a loss of power, increasing the risk of a crash.
The fix: Kia will notify owners, and dealers will remove the VPD switch and install two newly designed Battery Management Systems (BMS) that contain Overvoltage Protection Devices (OPDs), free of charge. The recall is expected to begin May 2018. Ow…
The defect: 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 Moto…
The risk: A person inside the trunk compartment may become trapped, increasing their risk of injury.
The fix: Dealers will replace the trunk latch base subassembly, free of charge. Owner notification letters were mailed October 19, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC278.
The defect: 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 pi…
The risk: A fuel leak in the presence of an ignition source can increase the risk of a fire.
The fix: Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC172.
Honda Accord — 38 recalls
The defect: Honda (American Honda Motor Co.) is recalling certain 2023-2025 Honda Accord Hybrid vehicles. Due to a software error, the integrated control module (ICM) central processing unit (CPU) may reset while driving, causing a loss of drive power.
The risk: A loss of drive power increases the risk of a crash or injury.
The fix: Dealers will reprogram the ICM CPU software, free of charge. Owner notification letters were mailed January 6, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's number for this recall is TN2. Vehicle Identificati…
The defect: Honda (American Honda Motor Co.) is recalling certain 2023-2026 CR-V Hybrid, Accord Hybrid, and 2025-2026 CR-V Fuel Cell EV vehicles. When using the tire repair kit, pressure may build within the sealant bottle, causing the bottle cap to detach.
The risk: A detached bottle cap can become a projectile and strike the user or others nearby, increasing the risk of injury.
The fix: Dealers will replace the tire repair kit nozzle or sealant bottle, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipat…
The defect: Honda (America Honda Motor Co.) is recalling certain 2023 Civic, Acura RDX, Acura Integra, and 2022 Honda Accord vehicles. A ball valve in the vehicle stability assist (VSA) modulator may leak brake fluid, which can result in unintended vehicle movement when the brake hold feature is engaged or an…
The risk: Unintended vehicle movement or an unexpected increase in brake pedal travel can increase the risk of a crash or injury.
The fix: Dealers will replace the VSA modulator, free of charge. Owner notification letters were mailed July 24, 2023. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are OEJ, XEK, AEY, XEX and OEW.
The defect: Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura R…
The risk: An air bag that deploys unintentionally during a crash can increase the risk of injury.
The fix: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024. This is a phased recall. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls ar…
Buyer analysis
KIA Optima or Honda Accord: which should you buy?
Based on NHTSA data, the Honda Accord has fewer complaints per year (443.8) compared to the KIA Optima (607.0), indicating a lower rate of reported issues. While both have significant problems, the Optima's engine failures are more frequent and severe, making the Accord a more reliable choice on average.
Key differences
- The KIA Optima has a much higher rate of engine complaints, with many owners reporting sudden oil loss and engine failure, even with proper maintenance.
- The Honda Accord has a significant number of complaints about forward collision avoidance systems, which can activate unexpectedly, a safety concern not as prominent in the Optima.
- Electrical system issues are common in both, but the Accord's electrical problems often involve advanced driver assistance features, while the Optima's are more tied to engine management.
- The Optima has more than double the number of crash-related complaints (214 vs 160) and injuries (191 vs 144), suggesting potentially more severe incidents.
- Check for any signs of engine oil consumption or leaks, and review maintenance records for oil changes and any engine-related repairs.
- Be aware of any recalls related to the engine or emissions system, and ensure they have been performed, as some owners report issues after software updates.
- Test the forward collision avoidance and adaptive cruise control systems to ensure they do not activate without reason, and check for any warning messages.
- Inspect the wiring harnesses for rodent damage, especially if the vehicle is parked outdoors, and verify the integrity of the sunroof glass.
Before you buy
- Obtain a vehicle history report and check for open recalls on both models.
- Have a trusted mechanic perform a pre-purchase inspection, focusing on the engine and electrical systems.
- For the Optima, specifically check engine oil level and condition, and look for any signs of oil leaks or burning smell.
- For the Accord, test all driver assistance features on a safe road to ensure they function correctly and do not trigger false alarms.
- Ask for service records to see if any major repairs have been done, especially engine or transmission work.
Year by year
Which model years to avoid
Complaints per model year for both vehicles — lower is better. The spikes are the years to scrutinize.
| Year | KIA Optima | Honda Accord |
|---|---|---|
| 2020 | 143 | 355 |
| 2019 | 205 | 677 |
| 2018 | 231 | 1864 |
| 2017 | 255 | 534 |
Check the actual car
Comparing models is smart. Checking the VIN is essential.
Brand averages tell you the trend. A VIN check tells you what's wrong with the specific KIA Optima or Honda Accord in front of you — accident history, open recalls and title records.
Go deeper
Full reliability reports
- Comparison
- KIA Optima vs Honda Accord
- KIA Optima total complaints
- 6,070
- Honda Accord total complaints
- 4,438
- KIA Optima total recalls
- 41
- Honda Accord total recalls
- 38
- KIA Optima avg complaints/year
- 607.0
- Honda Accord avg complaints/year
- 443.8
- More reliable overall
- Honda Accord
- KIA Optima top complaint area
- ENGINE
- Honda Accord top complaint area
- ENGINE