general problems of the 2019 Kia Motor Optima - part 1

The contact owned a 2019 kia Optima. The contact stated that while her daughter was driving at 60 mph, she noticed there was smoke emerging from the engine. The driver pulled over safely. But was alerted by a good samaritan who ran across four lanes of traffic to extinguish the fire with a fire extinguisher to no avail. The fire department was on the scene to eventually extinguish the fire. There were no reported injuries. The vehicle was towed to a towing lot. The local dealer was called, but there was no response. The contact called another local dealer: 4747 s yale Ave, tulsa, ok 74135, but there was no answer. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was approximately 133,000. The vehicle was deemed a total loss by the insurance company.

Even after regular oil changes car requires an additional 4 bottles of oil every 2 weeks. Now the car is jumping and having a misfire.

Drove roughly an hour from roseville mi to temperance mi. Car was fine. No issues on the drive. Gauges were all fine. Got to my friend’s house and took my stuff inside. Came back out immediately and saw dark smoke now coming from the hood. Attempted to open, but couldn't unlatch the hood after it was popped. Saw flames and called 911. Entire car burned down to the back seats. Car seat, reading glasses and personal items destroyed. Fire fighters put it out and police took report. Kia after review states they dont know why it happened. Also has taken forever and not offered to compensate me in any way shape or form. Received their “findings” a day ago, April 30. Date of fire was Feb 11th 2026.

The vehicle experienced a sudden engine failure one day after undergoing a manufacturer emissions/service campaign at an authorized dealership. Prior to service, the vehicle operated normally with no warning lights, knocking, or drivability issues. After the failure, the dealership denied coverage and declined to inspect the engine oil. The vehicle was towed for an independent inspection, which found metal shavings in the engine oil, indicating internal mechanical engine failure. The sudden failure created a safety risk due to unexpected loss of engine function. The issue has been confirmed by an independent service center and the vehicle remains available for inspection. No warning lamps or symptoms were present prior to the failure.

I purchased a used 2019 kia Optima from a dealership in January 2025 with 103,000 miles. 11 months later it's burning oil. Every 2 weeks I have to add a quart of oil. I took it to my mechanic and they found cylinder 4 has been burning oil. They also found a technical service bulletin related to engine oil consumption. They recommended replacing long block assembly. They referred me to a kia dealership. Currently, my vehicle is at a kia dealership. They performed a "leak down test" and found cylinder 4 has been burning oil and recommend a long block assembly. I have a 3rd party warranty on my car. They are currently reviewing this claim. If they decide to replace the long block assembly, there will be additional uncovered costs that I feel kia should be responsible for. I have only put 7,000 miles on this car since I bought it 11 months ago. The car currently has 110,500 miles on it. I understand this is a used vehicle but engines should last 200,000+ miles. I'm trying to figure out my rights. By law isn't the dealership responsible for this oil consumption loss and long block assembly replacement?.

My vehicle is consuming oil excessively. I have to put a whole quart of oil in my vehicle every 2 weeks. I am adamant about getting regular maintenance oil changes as well. My car had to be towed to a local auto shop due to the engine stalling and accelerator not working. They had to replace all 4 coil packs and 4 spark plugs due to dark, tarry oil covering the parts. The repairman told me my engine was at risk of failing, and that the repairs he did would not last without a new engine. I am worried about the car stalling or failing while driving, which puts an accident occurring at greater risk. My complaints resemble symptoms tied to previous Hyundai/kia engine recalls. I am requesting investigation and manufacturer action related to this issue.

The engine of vehicle repeatedly failed, causing the vehicle to stall while driving, which posed a serious risk to my safety and others on the road. The vehicle had approximately 65,000 miles and was maintained routinely and on schedule. The failure first occurred before November 18, 2025, when I reported stalling issues to kia authorized service & parts. The vehicle was returned as “fixed” on December 12, 2025, but the engine stalled again during normal operation. The vehicle was returned to kia authorized service & parts multiple times (December 12, December 18, December 23, January 9, January 12, 2026, and March 4, 2026), with repeated assurances that it had been repaired. Each time, the car continued to stall, including during a test drive at Subaru, demonstrating that the failure persisted despite repeated dealer intervention. The stalling created a significant hazard, as the car could lose power while on public roads, including highways, potentially leading to accidents. There were no consistent warning lights or messages prior to the engine stalling; the first symptom was intermittent loss of power while driving. The failure has been reproduced and observed by multiple service personnel at kia authorized service & parts and by Subaru during the trade-in test drive. The component(s) causing the failure were inspected by kia authorized service & parts staff, but no effective repair was made. Documentation of repair orders and dealer inspections is available for review.

Brought vehicle in for recall-sc340 theta ii 2. 4l gdi ecm s/w upgrade. After service was performed I took my vehicle back home and noticed that my down shifting was different, jolty and clunky. Prior to the upgrade my vehicle shifted flawlessly. Took my vehicle back in to have them check it out and they told me that they couldn't feel it and that the upgrade wouldn't cause that. Called kia corporate and filed a complaint.

The contact owns a 2019 kia Optima. The contact stated that while the vehicle was parked, there was sputtering sound coming from the engine compartment, with the check engine warning light illuminated. The contact stated that while driving at an undisclosed speed, the vehicle was running rough. The vehicle was taken to the independent mechanic where it was diagnosed with a cylinder misfire and burned spark plug, and that there was oil inside the cylinder and on the spark plug. The contact was informed that the parts needed to be replaced. The vehicle was repaired but the failure reoccurred months later. The vehicle was taken back to the same independent mechanic where it was diagnosed with oil consumption, oil intrusion into the firing chamber, and that another spark plug needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 112,000.

Red oil light came on along with check engine light took to shop got oil change and they test pressure all is good but oil light and engine light still on replaced oil pressure sensor switch and variable valve solenoid lights still on took to kia dealership they said say thing as first shop replaced oil pressure sensor switch again because they said the aftermarket one doesn't work on my car so bought part from dealer changed it light still on.

I recently had the engine replaced less than a year ago due to an engine recall on this model car, today 11/11/2025 the engine caught fire. We’ve kept up with oil changes on time and I had no alerts in the vehicle on the dash claiming the engine was hot.

Unknown needing help with new purchased car. Bought this car October/2025 with 93k on engine. Already been to dealership I bought it from to have current issues im dealing with checked out and they only listen to it and said it was injector ticking clatter. Since then ive seen white smoke and the car burning excessive oil. I am adding oil to the car every 2-3 days. Still noticeable smoke and smell of burning oil. No recall on this VIN. It seems as if this is a huge problem with this engine. Please help.

The contact owns a 2019 kia Optima. The contact stated that the catalytic converter was previously replaced. The contact stated that while driving at 60 mph, two weeks later, the check engine warning light illuminated, and the vehicle started misfiring. The contact drove to the residence. The vehicle was towed to an independent mechanic, where it was diagnosed and determined that the engine needed to be replaced. The mechanic related the failure to an unknown engine recall, and the contact was referred to the dealer for assistance. The vehicle was taken to the nearby dealer, where it was diagnosed with engine damage. The dealer acknowledged the unknown engine recall, but the engine was not replaced. The manufacturer was notified of the failure and informed the contact that the part of the engine that was damaged was not covered. The vehicle was not repaired. The failure mileage was approximately 179,000.

I purchased this vehicle on [xxx], with approximately 170,150 miles. On [xxx], during a routine oil change at approximately 172,636 miles, it was discovered that the engine had no oil present. Shortly afterward, the oil warning light began flickering intermittently while driving. On November 4, 2025, at approximately 175,495 miles, a certified mechanic again confirmed that there was no oil present in the engine. At no point were there visible external oil leaks, indicating excessive internal oil consumption. This condition creates a serious safety risk, as sudden engine failure while driving could lead to loss of power, stalling, or accidents. Based on my experience and publicly known issues involving kia engines, this appears to be a systemic defect rather than normal wear. I am requesting that NHTSA document and review this issue as a potential safety defect. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Over the past couple years, the check engine light has came on and I immediately had a mechanic look at it. The first time they said it was my spark plugs and changed them. Then this year, a year later, the check engine light came on and it became hard to accelerate on my way to a mechanic. Once again, they said spark plugs, so they changed them and claimed that they didn't look to had been changed before. Now here I am a couple of months after that, my check engine light came back on and my car started making a funny noise on my way to work. I turned back around and went home since I was closer to home than work. It sounds like rocks popping when you start it or hit the gas. I had someone check the codes and it said engine 1 and 4 coils. All 4 coils and spark plugs were changed again. That did not fix it. The sound is still there and the engine light is now blinking. I have kept up with the oil changes and everything. There is no recall. I still owe on the car and it is not able to be driven.

I was just driving then noticed lack of acceleration and the engine light flashing. Loosing acceleration mid driving posed a great safety risk because no other drivers would know the issue I was experiencing and risked causing an accident. The vehicle was taken for a fault code reading which indicated a knock sensor code, later it was inspected at the dealership who confirmed an ecu issue. The police or insurance have not inspected the vehicle for this particular issue.

I am the owner of a 2019 kia Optima fe with the 2. 4l gdi engine (theta ii). Despite following a consistent maintenance schedule with synthetic oil changes every 4,000 to 6,000 miles, the vehicle is experiencing premature engine failure. Specifically, the engine has internal valve damage, and the shop diagnosed the issue as failure of an internal valve component. The vehicle also has a leaking axle inner boot, but the major concern is the engine. Kia has refused warranty coverage, goodwill assistance, or recall support despite this engine being part of a long-standing pattern of issues documented across many kia and Hyundai vehicles with the theta ii platform. I still owe approximately $10,000 on this vehicle, and now face a potential $5,000+ repair due to a known manufacturing defect. Kia consumer affairs and the dealership both declined assistance, claiming my warranty has expired, even though this engine has been involved in class action lawsuits, extended warranties, and tsbs related to premature wear, oil consumption, and mechanical failure. I am submitting this complaint to formally report the issue and to urge the NHTSA to continue investigating kia’s 2. 4l theta ii engine failures, as they represent a potential safety and financial risk to consumers. Many drivers are left stranded or in serious debt due to an engine defect they could not have prevented.

Engine seizures.

•rapid oil loss — topped off every 1–2 weeks •engine misfires, check engine light •spark plug fouling and performance loss •repeated advice to “just refill oil” and “wait for failure” •unsafe to drive, especially as a working single mom.

The engine appears to be consuming an abnormal amount of oil. There are no visible leaks or external damage, and the vehicle has not yet stalled or failed, but oil levels drop rapidly between oil changes. The engine is available for inspection upon request driving with low or empty oil levels risks sudden engine failure while in motion, which could lead to loss of power, stalling in traffic, or even a crash. The oil warning light came on and went off at regular intervals unexpectedly during driving this week, which prompted me to get it to my mechanic ASAP to avoid potential engine damage or failure. They performed an oil change (even though I had done it there for this same car only 2133 miles ago not yet. I have contacted the dealership and have been advised to monitor the oil level or potentially conduct an oil consumption test. I have not yet received a formal diagnostic or confirmation from kia or a third party. Yes the vehicle was formally inspected by gettel kia of bradenton on 14th street for an engine stalling issue. . . Have experienced a stall only once since then yes. The oil warning light turned on (and off several times in 1 minute intervals) for the first time around 132011 miles. Upon the mechanic checking the dipstick, the oil level was significantly below minimum. No check engine light appeared. An oil change was performed only 2133 miles since the last one. Additional notes: I have discovered multiple similar reports from other 2016–2020 kia Optima owners via online forums such as reddit and kia owner groups, suggesting this may be a widespread issue related to the gdi engine design. These cases often go unresolved until engine damage occurs. I am requesting: a formal oil consumption test a full engine inspection repair or replacement if the issue is confirmed consideration for goodwill or warranty extension due to potential manufacturing defect I am maintaining oil top-off records and would be happy to provide them.

For several years my 'check hybrid engine' followed by turn off engine. The dealership can not figure out the cause. Twice in the last month the engine has automatically shut off when the "check hybrid engine' warning light displays. I nearly had an accident because the brakes are much weaker when the engine shut off. Kia dealership is unable to find the source of the problem and says the car is functioning normally and to continue to drive it.

I was driving in the rain on the highway and engine light started flashing!.

Lights appeared on the dash and the vehicle locked and would not drive. This happened as I was actively driving. I had the vehicle towed and was told by the kia dealership that it was my abs/hecu. Before this happened, there was no warning lamps or messages. The car was driving normally.

Oil is getting into cylinders causing spark plugs to misfire. Very high oil consumption so I have to put oil in it every other day in between oil changes. I’ve been to kia service department several times in the past 2 months.

Unknown. Vehicle is burning through oil every 1,000 miles or so. Excessive oil consumption which I am aware there is a recall. However kia states my VIN # is not included. While at the dealer service department for failed a/c system, we questioned the excessive oil consumption and engine replacement. We were told they found nothing wrong. Having to top off oil every 1,000 miles or so. It does not make it to the next oil change before the light comes on. No oil leaks. Mechanic said known problem with this engine. Most recently the starter went bad, alternator, and battery. Replaced with a second brand new battery and car won't start again. Dash is lighting up erratically, new battery dead. As if something is drawing all power and draining brand new batteries. This car has a little over 86,000 miles and one thing after another is failing. The car lost power and power steering in a curve leaving us in a dangerous situation after replacing the starter. Dash lighting up erratically with front end collision warning message on the display. We had it towed to our residence which our auto insurance reimbursed us for. Replaced alternator and battery yesterday, and the car lost all power again turning back onto our street, again with the dash lighting up erratically.

My 2019 kia Optima purchased brand new. Kia released a service bulletin on 3/1/22 citing “excessive oil consumption for 2011-2021 Optima's”. I took it in for the "updates" for said service bulletin for the engine and was told that my engine is good and covered now for the life of the engine even past the 100k miles (mind you no one mentioned doing an excessive oil consumption test at this time). On 3/22/24 car had 104k miles on it and the oil light came on. I had an oil change just 2500 miles or so prior. Pulled into an autozone and it was almost bone dry. I put oil in it and the light went off. I took it to evans kia and was told that they couldn't do anything because it was past 100k warranty and that they couldn't run the dx test to determine if it was excessively consuming oil as per the recall. Apparently during the recall they did the dx tests if the consumer stated it was burning oil fast or something to that extent. Mine did not get said test, only the upgrade. They should have done the test, but they just did an "upgrade" which clearly did not work. They said since I had the "upgrade", if the engine fails, then kia would fix it under warranty. Since then, this happened at least 4 more times with the oil light coming on and engine oil practically gone. Each time took less and less miles. I showed up to kia 2 of those times in 2024 to show them the the oil change date, mileage, and check oil light on. Also physically showed them the oil being almost empty, yet they did nothing but say when the engine dies or "knocks" they can fix it under warranty. One of those times I had it towed but they determined it was the fuel pump, never mentioned anything else. Fast forward 3/15/25 the engine starts knocking and engine light comes on. I managed to drive it to evans kia without any accidents. After my car sat for 9 days, they call me on 3/25/25 and tell me there is a "burnt valve on cylinder 4 and the engine will need to be replaced and it is not covered. How? help!.

P1326 code. Check engine light flashing. Is in limp mode with limited power.

The car had a complete engine failure at 92,000 miles. I was the second owner so this was not covered by any warranties. Well serviced and maintained vehicle.

I recently had an oil change and not even 600 miles later the oil is completely gone. My engine is burning oil like crazy. This just started happening at the 95,000 miles mark.

Engine failure.

Defective piston rings leading to excessive oil consumption, spark plug deterioration, and potential engine failure.

Excessive oil consumption for a car with 45,000 miles with no observed leaks under the car or on the outside of the engine.

The contact owns a 2019 kia Optima. The contact stated that while driving at various speeds, an abnormal engine oil consumption was noticed. The check engine oil warning light illuminated abnormally often, shortly after an oil change had been performed. The vehicle was taken to a local dealer, where it was diagnosed with defective piston oil rings. The vehicle was not repaired due to the warranty being deemed invalid. Upon further investigation, the contact related the failure to an unknown recall; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 65,000.

My engine is burning oil at an alarming rate, my car is not recognizing low oil, so I no oil lights are appearing. I have to go to the oil change place weekly to have my oil checked. When my oil is low, I have to pay to have my oil replenished between months of my oil changes. My and my son safety was put at risk, when I found out at an oil change visit, I had less than an quart of oil I was driving around with. Which can cause engine failure while driving, overheating, and reduced performance while driving. This was confirmed by an oil change facility. I am currently in a ongoing dispute with the dealership I received my car from. The kia dealership is refusing to do any maintenance until I can produce five years of oil change records that are not showing on car fax. To date my car oil light is not coming on, no signs are shown in my car showing this issue. I have to just get it checked weekly and pay for oil to be safe until, I can get a new engine.

The car is using oil like crazy and is not leaking anywhere out of the vehicle. Stalling out while driving and then accelerating. Has completely lost power and rolled down an onramp. Completely unsafe. Took for diagnostic and they wanted to say I needed a new gas cap. Replaced, still doing same thing. Hesitant to start even and the alternator is less than a year old.