Kia Optima problems
The Kia K5, formerly known as the Kia Optima (Korean: 기아 옵티마), is a mid-size car manufactured by Kia since 2000 and marketed globally through various nameplates. First generation cars were mostly marketed as the Optima, although the Kia Magentis name was used in Europe and Canada when sales began there in 2002. For the second-generation models, Kia used the Kia Lotze and Kia K5 name for the South Korean market, and the Magentis name globally, except in the United States, Canada, Malaysia and the Middle East, where the Optima name was retained until the 2021 model year. The K5 name is used for all markets since the introduction of the fifth generation in 2019.
First generation (MS; 2000)
From 2000–2005, Optimas were a rebadged variant of the Hyundai Sonata, differing from the Sonata only in minor exterior styling details and equipment content. It was first shown in South Korea in July 2000 and was the first product of the Kia-Hyundai platform integration plan.
In Australia, the Optima was introduced in May 2001, offered only with a 2.5 L V6 engine, and choice of manual or automatic transmission. The updated Optima was offered with a new 2.7 L engine, 4-speed automatic (the manual was dropped), and features such as full leather interior and alloy wheels were made standard. Thanks in part to better marketing, sales increased to 41,289 units in 2005, an all-time high. The Optima was sold until 2006, when it was replaced by the Magentis.
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Kia Optima model years
Common Kia Optima problems
The Kia Optima has been reported to have several common problems, with the worst category being engine problems.
Another common problem reported by Kia Optima owners is faulty starter issues. Many owners have reported that their engines suddenly wouldn't start at all, with no signs of what the issue is or that there was an issue in the first place. Although diagnostic tests don't show a clear cause of the engine problems, several owners were able to resolve the issue by simply replacing the battery and/or parking sensor.
The Kia Optima is also known for its faulty door latch problem, where it becomes very difficult to open the vehicle doors from both the inside and outside of the car. The cause of this issue is a faulty door latch assembly, and simply replacing the worn latch will often be all it takes to address the problem.
The main symptoms of a faulty throttle position switch (TPS) are the check engine light illuminating, combined with misfiring and power loss. According to owner reports, this issue tends to happen just after crossing the 100,000 miles milestone.
The Kia Optima’s weak alternator issue is also high on the list of reported Kia Optima problems. This issue generally comes to light when the car has been operating with high electrical loads, such as the driver running the lights, AC, etc., all at the same time – which results in insufficient battery charging capability, as well as making it difficult to start your vehicle. Some owners have reported that jump-starting their batteries or replacing the batteries helps solve the issue. However, several owners ended up experiencing the same issue over time.
In addition to these issues, there are also reports of door lock failures and transmission issues (software correctable) in various model years of the Kia Optima.
What is the most common problem with Kia Optima?
Kia Optima Reliability and Common Problems
- The Kia Optima scored well in terms of reliability, receiving a 4 out of 5 rating on RepairPal. ...
- Some of the top Kia Optima problems include defective throttle position sensors, malfunctioning door latch, weak alternator, leaky low pressure fuel hose, and steering complications.
Is the Kia Optima a reliable car?
The Kia Optima Reliability Rating is 4.0 out of 5.0, which ranks it 8th out of 24 for midsize cars. The average annual repair cost is $471 which means it has lower than average ownership costs. The severity of repairs is average and the frequency of those issues is low, so major repairs are uncommon for the Optima.
What year was bad for Kia Optima?
Kia Optima Years to Avoid: 2011
There were enough issues and pressure from consumers with widespread criticism that a class-action lawsuit was filed against Kia. Eventually, the carmaker recalled the 2011-2014 Optimas with 2.0-liter and 2.4-liter four-cylinder engines, among other cars.
Why are Kia Optimas so cheap?
The materials used are lower in quality than other manufacturers, but Kia is quite smart when it comes to production. Some of the cheaper plastics are used sparingly, so many of Kia's interiors look and feel fancy – but they still managed to save on production costs and pass the savings to the customers.
Percentage distribution of complaints by Kia Optima years
We have researched Kia problems and analysed all the complaints filed against Kia Optima cars and compiled the top 5 most problematic Kia Optima model years:
Below you can see the percentage distribution of known problems by Kia Optima model years.
Distribution of the number of complaints by Kia Optima years
We've also compiled a chart for you with the number of complaints about Volkswagen Jetta cars of certain model years:
Kia Optima car problems categorized by type of issue
After analysing all complaints related to Kia Optima , it was concluded that the most common issues with these cars are:
- Engine problems
- Electrical system problems
- Unknown or other problems
- Steering problems
- Air bags problems
The graph below shows statistics for all Kia Optima vehicle components and the number of complaints received.
Distribution of the number of complaints where the accident occurred by Optima model years
A total of 291 complaints were registered in which the accident occurred. In the graph you can see the distribution of the number of complaints by model year.
Distribution of the number of complaints with fire by Optima model years
There were a total of 351 complaints that resulted in a fire. In the graph you can see the distribution of the number of complaints by model year.
Distribution of the number of complaints with injuries by Optima model years
There were a total of 246 complaints that resulted in a injuries. In the graph you can see the distribution of the number of complaints by model year.
Distribution of the number of complaints with deaths by Optima model years
There were a total of 17 complaints that resulted in a death. In the graph you can see the distribution of the number of complaints by model year.
The NHTSA has received 6601 complaints about various vehicle components related to the Kia Optima . Below are the 25 most recent complaints reported for Kia Optima vehicles.
Latest 25 complaints
Kia Optima 2014
- Date Of Incident: 2024-08-19
- Date Complaint: 2024-10-27
- VIN: 5XXGN4A76EG
- Components: SUSPENSION,ELECTRICAL SYSTEM,ENGINE
- Summary: Complaint Summary: I am the current owner of a 2014 Kia Optima, which is affected by recall 23V652 related to the Hydraulic Electronic Control Unit (HECU). The vehicle was imported to the UAE, and the recall was not addressed by the previous owner. As a result, I am now facing significant safety issues. Since taking ownership, I have encountered multiple engine problems, including sudden power loss, severe vibrations, and abnormal behavior from the throttle. These symptoms align with the issues outlined in the recall notice, indicating that the vehicle may pose a safety risk to me and other road users. Despite my efforts to diagnose the problems, I have already incurred costs exceeding 13 AED on various repairs and diagnostic services, all while being unaware of the existing recall. It was only recently that I discovered the recall information online, which has heightened my concern regarding the safety of my vehicle and the potential for further complications. Given these circumstances, I am requesting assistance from the NHTSA in resolving this recall issue and guidance on how to proceed with the necessary repairs while the vehicle is registered under my name in the UAE. It is crucial for me to ensure the safety of my vehicle for my own protection and for the safety of others on the road. I appreciate your attention to this urgent matter and look forward to any support you can provide. Please let me know if further information or documentation is needed Thanks alot
Kia Optima 2012
- Date Of Incident: 2024-04-30
- Date Complaint: 2024-10-27
- Fire: 1
- VIN: KNAGM4AD6C5
- Components: POWER TRAIN,STRUCTURE,ENGINE
- Summary: Power train and engine failure and causing my Kia to catch on fire at 11:30 coming back home from work. I was Driving home and smell smoke and car was shaking and when I stopped at the highway to open and look fire was on while driving and I had to call 911 and stop the fire. I had some fire extinguisher in the car I stopped the fire and towed the car and I replaced engine and powered train For over $9000 between repairs and labor and transmission and engine
Kia Optima 2019
- Date Of Incident: 2024-10-26
- Date Complaint: 2024-10-26
- VIN: 5XXGU4L15KG
- Components: STRUCTURE
- Summary: PAINT CAME OFF OF THE HOOD AND TRUNK (PEARL WHITE)
Kia Optima 2018
- Date Of Incident: 2022-07-01
- Date Complaint: 2024-10-23
- VIN: 5XXGU4L31JG
- Components: EXTERIOR LIGHTING
- Summary: Kia Optima headlights turn off randomly while on automatic. This dangerous issue has been investigated on other Kia models by the NTSB, which them prompted Kia to issue a recall. I have found many, many posts on car and Kia forums about headlights shutting off while driving at night with the Kia Optima (as well as other Kia items). It's very scary and very hazardous. This is a widespread issue.
Kia Optima 2012
- Date Of Incident: 2024-06-11
- Date Complaint: 2024-10-23
- VIN: KNAGM4A77C5
- Components: VISIBILITY
- Summary: The contact owns a 2012 Kia Optima. The contact stated that the front passenger's side window failed to roll up or down as needed. The vehicle was taken to the dealer; however, the contact was unaware of the diagnostic result, nor the parts needed to be replaced to repair the vehicle. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
Kia Optima 2018
- Date Of Incident: 2024-10-21
- Date Complaint: 2024-10-22
- VIN: 5XXGT4L39JG
- Components: ELECTRICAL SYSTEM,EXTERIOR LIGHTING
- Summary: While driving at night if the headlights will randomly turn completely off
Kia Optima 2016
- Date Of Incident: 2024-10-21
- Date Complaint: 2024-10-22
- VIN: 5XXGT4L39GG
- Components: ENGINE
- Summary: The contact owns a 2016 Kia Optima. The contact stated while driving 65 MPH, the vehicle made an abnormally loud knocking sound and experienced reduced engine power. The contact stated that the engine failed to exceed 2,000 RPM. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed that the rod bearings had failed. The dealer determined that the engine needed to be replaced. The vehicle was not repaired. The contact related the failure to an unknown recall. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 106,000.
Kia Optima 2015
- Date Of Incident: 2024-02-02
- Date Complaint: 2024-10-22
- VIN: 5XXGR4A60FG
- Components: STRUCTURE
- Summary: vehicle paint is peeling severely
Kia Optima 2015
- Date Of Incident: 2024-10-14
- Date Complaint: 2024-10-22
- VIN: 5XXGM4A72FG
- Components: AIR BAGS
- Summary: The contact owns a 2015 Kia Optima. The contact stated while driving approximately 45 MPH, the air bag warning light illuminated. The contact stated that two independent mechanics were sent to the residence to diagnose the vehicle. The contact was informed that the clock spring needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 72,000.
Kia Optima 2015
- Date Of Incident: 2024-01-01
- Date Complaint: 2024-10-21
- VIN: 5XXGR4A64FG
- Components: STRUCTURE
- Summary: White pearl paint is chipping all around the car. At times big chucks of paint just flake off
Kia Optima 2019
- Date Of Incident: 2024-10-08
- Date Complaint: 2024-10-21
- VIN: 5XXGT4L39KG
- Components: LANE DEPARTURE,FORWARD COLLISION AVOIDANCE
- Summary: Under normal operating conditions all sensors malfunctioned causing all abs systems to stop working.
Kia Optima 2012
- Date Of Incident: 2020-01-01
- Date Complaint: 2024-10-21
- VIN: 5XXGN4A70CG
- Components: SERVICE BRAKES, HYDRAULIC
- Summary: 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.
Kia Optima 2013
- Date Of Incident: 2024-10-17
- Date Complaint: 2024-10-20
- VIN: 5XXGN4A71DG
- Components: ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM
- Summary: Was driving down the highway with no indication of any problems with my car. It just shuts off completely had to coast to the side of the road get someone to tow me home. While on side of the road opened the hood and saw white smoke come from the engine. Just had an oil change and coolant is fine.
Kia Optima 2014
- Date Of Incident: 2024-09-27
- Date Complaint: 2024-10-18
- VIN: 5XXGM4A72EG
- Components: ENGINE
- Summary: The contact owns a 2014 Kia Optima. The contact stated while driving 35 MPH, there was an abnormal knocking sound coming from the engine, and the vehicle suddenly went into LIMP mode. The contact was able to pull to the side of the road. The contact then drove to the residence. The vehicle was taken to the dealer, where it was diagnosed that the engine had failed and needed to be replaced. The dealer informed the contact that an unknown software update regarding the engine knocking was previously performed on the vehicle. The dealer informed the contact that the vehicle could not be covered due to the rebuilt title. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 138,000.
Kia Optima 2014
- Date Of Incident: 2024-10-18
- Date Complaint: 2024-10-18
- VIN: 5XXGN4A78EG
- Components: STEERING
- Summary: There is a recall on steering shaft.
Latest 5 recalls Kia Optima
The National Highway Traffic Safety Administration (NHTSA) has issued 59 recalls for different components of the Kia Optima.You can explore the year of the Volkswagen Jetta you are interested in by selecting it from the list.
- Model: Kia Optima 2015
- Report Received Date: 2023-09-25
- Manufacturer: Kia America, Inc.
- Park Out Side: 1
- Park Out Side: 1
- Components: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- 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.
- Consequence: An engine compartment fire while parked or driving can increase the risk of injury.
- 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.
- Model: Kia Optima 2012
- Report Received Date: 2023-09-25
- Manufacturer: Kia America, Inc.
- Park Out Side: 1
- Park Out Side: 1
- Components: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- 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.
- Consequence: An engine compartment fire while parked or driving can increase the risk of injury.
- 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.
- Model: Kia Optima 2014
- Report Received Date: 2023-09-25
- Manufacturer: Kia America, Inc.
- Park Out Side: 1
- Park Out Side: 1
- Components: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- 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.
- Consequence: An engine compartment fire while parked or driving can increase the risk of injury.
- 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.
- Model: Kia Optima 2013
- Report Received Date: 2023-09-25
- Manufacturer: Kia America, Inc.
- Park Out Side: 1
- Park Out Side: 1
- Components: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- 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.
- Consequence: An engine compartment fire while parked or driving can increase the risk of injury.
- 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.
- Model: Kia Optima 2011
- Report Received Date: 2023-09-25
- Manufacturer: Kia America, Inc.
- Park Out Side: 1
- Park Out Side: 1
- Components: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- 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.
- Consequence: An engine compartment fire while parked or driving can increase the risk of injury.
- 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.
Latest negative Kia Optima car reviews
Latest positive Kia Optima car reviews
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Vehicle year: 2012
I posted a review shortly after purchasing my EX with Premium (no turbo, no nav). I must say, I love this car more every day! I just got back from a 3-day road trip, mostly on the highway, and I averaged an impressive 36.3 mpg. Woo hoo! The front driver's seat is incredibly comfortable, and I adore the stereo, a/c, and pano roof. The only reason I lost a star for comfort is because the front passenger seat is quite low (I feel like 'Kilroy was here' when I ride on the passenger side). Other than that, I am absolutely loving this car!
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Vehicle year: 2019
This was such a great option! The car practically drives itself on the highway. It's modern and turns heads. Although the headlights could be better, I plan on replacing the bulb with LED headlights. The seats are comfy and the car has a nice acceleration. We chose this over the Camry and wouldn't go back. It's way better and has better reviews than even a Honda CRV!
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Vehicle year: 2006
This car replaced a Buick Century and I must say it has many better features than my GM auto did. It is roomier, provides better protection for all riders, handles like a dream, and has the best finish I've ever seen on a new car. I've owned many new cars in my lifetime (I'm 75 years old) and this KIA is the best!
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Vehicle year: 2010
Great car! I'm so glad to hear that you haven't had any problems with it since you bought it on Oct. 11, 2010. It's always exciting to own a new type of car, and I'm happy to hear that you're enjoying your first 5-speed. It sounds like it's pretty quick and fast, and I love that you can downshift to third and pass cars with no problem. Even with a loaded car (at least 800ibs extra weight) driving up steep hills, you still managed to get 25MPG, which is impressive! It sounds like you got a lot for what you paid, just a little over 12,000. Thank you for sharing your positive experience with us!
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Vehicle year: 2011
I bought a 2011 SX graphite color and every single day people ask me if it's the new Audi, Infiniti, or Saab. I love it! The pick up is great and it's quiet (not as loud as some people exaggerate, but I have the luxury wheels). I previously owned a 2002 Nissan Altima and that was loud to me. I have zero complaints aside from the engine start in the mornings (I live in LA) which is a bit loud but quiets down after 10 seconds. I absolutely had to add the K5 LEDs in the front and it makes a huge difference! I'm still in awe over the car and I've already driven it 1600 miles. I never thought I would buy a Kia in my life, but after testing the C300 and Audi A4, this had a lot more value for the money. I did rebadge it for K5.
Are you having problems with your Kia Optima?
Rick Schmidt 2025-07-26
Vehicle year: 2003
Many people believe that foreign cars are superior, but in my experience, I cannot recommend Kia. I have had to replace the alternator twice in just 14 months, and have had to replace just about everything on it despite having only 76,000 miles on it. The sound system is also poor, skipping like a CD player, and the CD player hasn't worked since the first week I bought it. Additionally, the alarm hasn't worked for 2 years and goes off whenever it wants to when it's set. Furthermore, the parts are very expensive. In my opinion, it would be better to stick to Toyota or Honda.
Soledad Fritsch 2025-07-25
Vehicle year: 2013
I had to replace the engine at 80,000 miles, which cost me $5,500 at the Kia Dealership. They attributed the cause to 'metal to metal rod bearings' and suggested that I should have used a KIA GENUINE oil filter. However, I have read multiple accounts of the same experience with the KIA Optima and even saw on the news that Hyundai recalled the same engine this car has. It seems like there may be an issue with the Optima engine that needs to be investigated. Despite this experience, I believe that KIA values their customers and hope that they will take steps to address this issue.
Brad DuBuque 2025-07-24
Vehicle year: 2018
Nice solid, responsive car. However, it seems to be missing the luxurious feel of previous model years.
Eliezer Roob 2025-07-22
Vehicle year: 2003
The rear end has a lip that extends out from the trunk. While it looks okay, we only had 2500 miles on it before a hotel luggage handler used it to lay our luggage on it and then proceeded to push suitcase in the trunk. It resulted in a few scratches and a major chip of paint taken off. It would be great if it could be redesigned to be more flush with the trunk. To avoid any damage, it's recommended to load your own luggage and golf clubs.
Brannon McGlynn 2025-07-22
Vehicle year: 2017
I recently purchased a 2016 KIA Optima EX and initially, I was very pleased with it. However, I have experienced some mechanical issues that have changed my opinion. Unfortunately, the car has proven to be unreliable as the engine has stalled multiple times and at times, it would not accelerate. This has made driving the car dangerous, especially when it stalled while I was doing 70 mph on the interstate! I took the car in for service on four occasions and each time, I was assured that the problem was taken care of. However, the last time it stalled, I had to tow it to the dealership and expressed my concern that the car was a lemon. I was scared to drive it and wanted to trade it, which I did for a 2017 Optima EX. Unfortunately, the same issue has started with the new vehicle and it now has 22,000 miles on it. I called the same dealership today and spoke to the service department. Although they claimed to have never heard of this issue before, I reminded them that I had reported it about 7 or 8 months ago. I hope they can resolve the issue this time around.