While driving my car started to decelerate in the middle of the freeway and I was in no position to pull over. The hybrid battery nearly completely drained before I was able to limp off the freeway. My car threw an error message to -??Check Hybrid system-?? and told me to pull over immediately and turn the car off. After pulling over, turning the car off, then turning it back on, the message went away but the check engine light remained. After 24 hours the check engine light disappeared until it would randomly do the same thing all over again. I ran an OBD code reader on it and it gave me P2600. After extensive research, I-??ve noticed a lot of Hyundais and Kia-??s around the same year as mine having the same issue with some peoples vehicle completely dying. Many threads take their vehicle into the dealership and they can-??t replicate the problem so they-??re just sent on their way for the dangerous problem to happen again at any given time. This is a dangerous situation because you don-??t get any warning or strange engine noise to warn you. The car just pops up this message and the engine immediately starts to malfunction.

- League City, TX, USA

This pre-owned vehicle lost power at an intersection with my wife and child in the vehicle. Both of them were fearful and in tears. Several indicator lights suggested problems with the engine, HEV system, and battery. Upon returning home, I notified Carmax and scheduled the vehicle for service at a local Kia dealership. Although the mechanic told me that he knew there is a problem with the vehicle, Kia failed to diagnose or fix the problem(s), and could not assure me that the vehicle was safe to drive. Maxcare would not cover a rental car because no diagnosis was made. Kia also informed me of a previously undisclosed, long history of problems going back to 35 miles on the odometer. I requested a copy of Kia's vehicle history report and Kia refused to provide it. I also reported this safety concern to Kia Consumer Affairs, who provided no immediate solution, said they would contact the local Kia dealership, and referred me to an "ongoing" class action settlement at [XXX], which indicated that the settlement had closed on 8/9/21. Because no other option was offered to me, I was forced to pick up the vehicle from Kia. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Blackwood, NJ, USA

The contact owns a 2017 Kia Optima. The contact stated while driving approximately 35 MPH, the check engine warning light illuminated. The contact reset the check engine warning light however, the light became illuminated again. The vehicle was taken to a dealer and the contact was informed that the engine oil was low and needed to be topped off. Additionally, the dealer offered to perform an oil consumption test. The vehicle was not repaired. The contact stated that he had researched online and related the failure to an engine design flaw. The contact requested that the dealer attempt to repair the engine and was refused. The contact was advised by the dealer to drive the vehicle until the engine failed and then he would be placed under consideration for a manufacturer engine replacement program. The manufacturer had been informed of the failure. The failure mileage was approximately 76,000.

- Las Vegas, NV, USA

Driving down the interstate, the vehicle started to decelerate and the engine light started flashing. Got it to a mechanic and he started that it was a knock sensor failure P1326 code. Same as the recalls, but my vin number was not included in the recall report. Already had this vehicle in for excessive oil consumption. Paid for the dealer consumption test. They said it only burned a qt. and that was acceptable. In 1000 miles. Have done my own 1000 mile test and have been burning 1.5 or more qts. on three separate tests. Something has to be done about these engines. This is dangerous when going interstate speed and dropping to 20 mph in heavy traffic.

- Enosburg Falls , VT, USA

Oil from engine does not cycle through the engine and instead it foams up and comes out of the top of the engine and I need to put oil in my car every week.

- Boston, MA, USA

The contact owns a 2017 Kia Optima. The contact received notification of NHTSA Campaign Number: 23V594000 (Latches/Locks/Linkages) however, the part to do the recall repair was not yet available. The local dealer was contacted and determined that the next available appointment would be in February 2024. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue and confirmed that there were a lot of customers in front of him and the dealer would not be able to get to the vehicle until February 2024. The contact stated that the vehicle was consuming an excessive amount of engine oil and failed to start occasionally. The vehicle was not diagnosed or repaired. The failure mileage was approximately 126,000. Parts distribution disconnect

- Macon, GA, USA

The contact owns a 2017 Kia Optima. The contact stated that while driving at 60 MPH, the vehicle inadvertently decelerated and then lost motive power. The check engine warning light was illuminated. The contact was able to restart the vehicle and drove to the residence. The contact stated that the vehicle jerked while driving. An independent mechanic diagnosed the vehicle at the residence and retrieved DTC Code: P1326, and the contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the knock sensor was previously replaced for the same issue; however, the failure recurred. The manufacturer was made aware of the failure but informed the contact that there was no recall associated with the VIN and that the vehicle was not covered under warranty. The failure mileage was 100,670.

- El Paso, TX, USA

The engine on this vehicle caught fire while the vehicle was parked and not running. It had previsouly been drive for approximately 4 hours throughout the day but at the time of the incident there were no warning dashlights present. It is currently available for inspection, however depending on the length of this invesitagion it may no longer be available as i work with my insurance company determing next steps. My safety and the safety of other were put at risk by and open flame and smoke that occured during the fire. Ultimately the Fire Department were required to put out the fire. Approximately 8 months ago the engine was replace by the dealership Summit Place Kia East in Michigan due to an open recall for a knock sensor issue. I suspect this vehicle will be a total loss.

- Brownstown, MI, USA

I was driving my kiaon a very busy interstate. When I was going around 65miles per hour and all of a sudden I lost all power it went from 65 miles per hour to 30 all at once when I hit the gas peddle the car went in jerks finally I got it back up to 55 but it only goes in a jerking motion and r. Very small hill u come to u lose power and it goes jerking. I thought several times I would get rear ended by the vehicle behind me I'm scared to drive this and when the car is running and you step out of the car the smell of gas is very strong and it is using a lot more gas than it mostly does. This happened to me September 20th2023.

- Saxton, PA, USA

The contact owns a 2017 Kia Optima. The contact stated that the oil warning light was frequently illuminated on the instrument panel. The contact took the vehicle to an independent mechanic and was informed that oil had leaked into an engine cylinder. The mechanic informed the contact that a Technical Service Bulletin had been placed on her vehicle in relation to the failure and referred the contact to a dealer for assistance. The contact called Pride Kia of Lynn and Herb Chambers Kia of Burlington and was informed that the vehicle was out of warranty. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 122,000.

- Lynn, MA, USA

Complete engine failure while driving 70mph down the freeway. No lights came on before engine started shaking, knocking, and failed. We were stranded at a gas station. We checked oil and there was none. (This was shocking because we changed oil regularly and car had just received complete oil change several weeks prior) We bought enough oil to drive it to nearest auto mechanic shop. He inspected the car and said complete engine failure and that we needed to contact KIA immediately. Spark plugs were burnt and melted more than he had ever seen. He said this is a recurring problem with their engines. (A few months prior to this incident, check engine light came on and car had a slight sputter during acceleration. We took the car to local repair shop. Car received complete tune up weeks prior to incident and check engine light was resolved.) Car was taken to Kia dealership in Little Rock, AR. Diagnosis: Major oil consumption caused engine to overheat and lose pressure/fail. Engine is non-repairable. New engine will cost $10,000. Kia will not back their product. After investigating further, I have found a Facebook group with tens of thousands of people with similar incidents in their Hyundai/Kia cars. This is a dangerous problem and KIA needs to be held accountable. The most recent class action settlement DOES NOT cover engine failure due to major oil consumption, only rod bearing failure. Where is the oil going" There were no leaks detected, no oil light to warn me. Where does the oil go? Burning up through exhaust" Surely that violates some sort of environmental standard that car manufactures should be abiding by. These cars are dangerous to consumers, and bad for the environment. I-??m stuck with a car that I still owe money on that is worthless. If I spend $10,000 to repair, they will put the same engine back in the car and I will repeat the cycle of engine failure and loss.

- Cabot, AR, USA

My car does not accelerate easily and struggles with basic speed. I took it to a mechanic and am being told that my turbocharger has failed and must be replaced because there is fuel in my oil and there may be damage to my engine as a result that would require me to replace the engine. This is the second time in less than 2 years that this has happened since I have owned this vehicle. The mechanic says the engine could seize up or catch fire at any point and that I will have to have the oil drained, flushed, and replaced, hopefully have the fuel leak found and repaired, then the turbo replaced. Only once all of that has been done will I know if the engine will still be operable. The first time this happened it was repaired at a Kia dealership in Denton TX under warranty. The vehicle is no longer under warranty and should not have this problem every year.

- San Antonio, TX, USA

Engine needed to be replaced as part of the recall for knock, however they said because the repair was done on a subsequent work order and the first one was for a failed AEB module that none of the repairs are covered. I'm out over $13,000 for what should have been warrantied

- Spanaway, WA, USA

My vehicle came up with a check engine light blinking. I took it to a Kia dealership where they put the ksds update in. A week after driving it, I started experiencing loss of power and the check engine light came back on. But this time not blinking. My car accelerates slowly, it is a struggle to get to 30 mph. My engine is making loud noises as if I am flooring the gas pedal when going 10 mph. Hills are impossible and dangerous to drive up. I took it in where the man told me my oil was empty, when just the day before it was full. I ran the code reader which came up p0010 for a camshaft. Now I-??m being told it-??s the entire top motor needing replacement due to -??no oil-??. I saw online recalls for this exact issue on the engine. It states of a lifetime engine warranty for this qualifying engine problem. I called the dealership where the lady informed me that there is a third party company that makes warranty coverage decisions, and that they make the decision on if it-??s covered based on how much they will have to pay. If it-??s a lot, it-??s on me. Basically my engine failure qualifies but they don-??t want to pay the amount of repairs. So I-??m stuck with paying thousands for a hazardous car that I-??ve only had for 8 months.

- Burien, WA, USA

i had engine light a code P200a on my 2017 kia optima ex 17,000 miles i have like a hesitation when accelerating, sometimes just sitting idling or sitting at a light feels like going to stall. i had some one check it they told me to bring it to the dealer because they looked it up and said it is like a recall on 2016 kia optimas there is a Technical Service Bulletin on the same condition that i have i went to the dealer and they said thats what it was the (VCMA)variable charge motion actuator on the intake manifold..i dont drive to much with the car i looked on line and a bunch of people say they had the same problem with my year and older models.thank you.ihad it fixed at the dealer on 8-30-23 case #15777155

- Ozone Park, NY, USA

In the last year, my car has been in the shop countless times. I have had my knock sensor replaced and fixed multiple times. There is a significant lag when taking off from a complete stop, and there have been times that I cannot exceed more than 60 MPH. I have had my car serviced the exact way it states in the owner's manual without fail and still cannot find a cause for why my car is experiencing all of these issues. To get the motor to accelerate is nearly impossible 90% of the time. There is currently a recall on some other 2017 Kia Optimas for the Knock Sensor but there is not one on mine, even though mine has been replaced and fixed several times.

- Kingston, OK, USA

Vehicle had oil change & filter service done on April 27, 2023 for the purpose of hoping the service would rectify an Oil Pressure Sensor Light illuminated on the dashboard. It did not. Sensor was subsequently replaced by the dealer. Vehicle taken into the dealership today (September 2, 2023) for Pennsylvania State Inspection and Emissions, along with another oil change service. Dealer technician in the course of performing the oil change, noticed after he put the new oil plug washer and bolt back in place, a minute crack in the oil pan, itself. He took a picture of it, that I will include with this complaint. Unfortunately, the definition of the photo leaves a bit to be desired. The dealer service writer suggested that too much force (pneumatic socket driver) was employed when tightening the oil pan bolt. I stopped at the location where the April 27, 2023 was done. The General Manager assured me they use a power torgue ratchet and not a pneumatic socket driver. He went under the car and detected a minute leak and said he would forward his report to their Quality Control Department. He asked me if I could bring the car back on Tuesday or Wednesday, September 5th or 6th for a re-inspection. I said I would do that. He did mention there is a possible Class Action Suit that might be filed over Kia/Hyundai Oil Pans and Bolts. It cites the use of poor materials used in the pan construction. Reports range from leaks to the oil bolt plug falling out due to expansion/contraction under duress. Don't know where or when any Class Action will manifest itself, but this oil change facility needs to step up and replace the oil pan, since they were the last ones to do a change before today.

- Bensalem, PA, USA

First I had an oil leak which I was advised to warm my car up to prevent from getting worse. At the time I was told it was minor. Then my oil light started coming up every 2 weeks and when checked there was no oil. Now 2 months later, my car has stopped and showed a blinking check engine light. When checked I was told a code of p1326 which is the knock sensor. I have only had my car 7 months and it-??s been problem after problem. Not to mention only a month after buying it was stolen. Due to no immobilizer So I-??m sure a lot of the issues are also a result of the dumb theif who decided to damage my car. Also my cruise control doesn-??t work a lot of the time.

- Burien, WA, USA

My 2017 Kia Optima is running out of oil between oil changes which I do on time. Before my next oil change it has no oil reading on the dip stick. I just had this occur again and I had to add two quarts. The oil light only blinked on for a second. When I checked it, no oil was reading on the dip stick. Taking it to auto store I was told by worker his mother has the same problem with her 2016 Kia and they replaced the motor in a recall. Mine is a GDl engine. Something needs to be done with these engines. I'm having the same problem a lot of other people are having.

- Newton, IA, USA

I have replaced my cars spark plugs and all things related to the spark plugs for the last 4 months. After taking NY car for maitnence over and over again at the Santa Fe Kia in Santa Fe, NM. The car has cintun3d to have issues. My car is currently having a issue with the knock sensor and wire harness from the Diagnostic I received from my Local Auto Zone in Las Vegas, NM. The car does not drive correctly and sputters. I have took it to be be maintenence over and over again and spent over $500 for the maintenence this last four months. And it seams it has been one issue after the other my car is under 70,000 miles. I give it proper maintenence and oil changes.

- Las Vegas, NM, USA