2018 KIA SPORTAGE Engine Problems

Took my car for the theft recall and had it performed, my vehicle was stolen last night and the theft used a USB charging cable to steal it, the recall did not fix this

My vehicle suffered from a catastrophic engine failure while driving on the highway. The vehicle stalled at highway speeds (55mph), during rush hour. Causing a near rear end collision. From this point on my vehicle was unable to reach speeds of 30 Mph. This failure is consistent with a defect in the Theta II engines that has been subject to recalls. The Theta II engine recall is under a soft recall. It is not known to the public unless it happens to the owners vehicle. This sudden stall at highway speeds jeopardized the safety of the driver (myself) and the people and vehicles behind the driver.

My 2018 Kia Sportage (2.4L Theta II GDI engine) suddenly triggered diagnostic trouble code P1326 (Knock Sensor Detection System – Detection of Excessive Connecting Rod Bearing Wear) and entered limp mode at 111,595 miles on Sep 13, 2025. The vehicle is now speed- and RPM-limited to protect the engine from catastrophic failure. This is the exact failure mode covered under the well-documented Hyundai/Kia Theta II engine defect that has led to thousands of engine seizures and, in some cases, vehicle fires. Kia implemented the Knock Sensor Detection System (KSDS) software update (Campaign SC200) on this VIN, yet the system has now correctly detected excessive connecting rod bearing wear. Despite the vehicle falling squarely within the class vehicles listed in the 2020–2023 Hyundai/Kia engine litigation settlement (In re: Hyundai and Kia Engine Litigation II), Kia’s settlement VIN-check website [XXX] ) incorrectly states this VIN “has not been matched with an eligible...

Due to excessive oil consumption and blow thru to catalytic converter, and burning of oil in the converter clogged up my catalytic converter as seen in pics causing exhaust fumes to enter cabin and engine not run properly. Driver or passenger must open windows to get fresh air. I had to have converter replaced. There is still periodic fumes that enter cabin even with new converter because engine is still consuming excessive oil . This should be addressed to and rectified through KIA corporation. Thanks

The original factory engine is malfunctioning, causing excess oil consumption -- at or over one quart consumption per 1000 miles -- believed to be caused by fouled piston rings. It is a known defect for this and similar KIA engines. Issues and remedies outlined in KIA Technical Service Bulletin 222. The vehicle and engine are available for inspection upon request. Our safety and the safety of others is continuously at risk in the event of engine failure and/or vehicle breakdown in city or freeway traffic, and in our rural location. Safety is also a factor in the event of vehicle breakdown which would put vulnerable passengers (five year old granddaughter, etc.) in danger if such event occurred in traffic or during weather extremes. The oil consumption problem has been confirmed by Butler KIA. The engine was inspected by the manufacturer via Butler KIA only in the form of three 1000-mile...

There has been High oil consumption after 100,000 miles and the low oil light has shown. It will burn more than a quart in less than 1,000 miles.

My vehicle make and model has been documented to have had engine issues which has caused car fires from the engine compartment from what has been documented this is my best guess.

The code P1326 keeps popping up on my dash board even after changing it that part out which is claimed to be the knock sensor.I researched it and it said something with the rod bearings and my mechanic personal mechanic had mentioned it’d be best to swap the engine, and told me about Kia recalls on certain make and model. My vehicle falls into the recall list of year and make and model… but my vin isn’t on the recall list, yet it is doing the same exact thing that has been listed up for recall. I am concerned about my safety, engine stalls and looses power, how can I go about this?

My 2018 Kia Sportage (VIN [XXX] ) experienced complete engine failure due to low compression/internal combustion chamber failure. The vehicle lost power while driving on Sept 30, 2025, and had to be towed to [XXX] Kia in Dayton, OH. This same dealership previously performed an oil retention test in Aug 2024 which failed, identifying a defective engine. Kia was aware of the issue but declined to replace the engine at that time. The failure pattern matches Kia’s known engine defect. Kia Consumer Affairs (Case #25572677) has denied goodwill assistance despite this safety-related engine failure and prior diagnostic documentation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I started my car and it started shaking violently, and would jolt back and forth, I would be on the highway and the speed would decrease rapidly and overheat slightly to pick up speed

The engine has been consuming oil. When I brought it to the attention of the dealership the recommendation was to oil consumption test and also to clean the combustion chamber. On this car they lost a class action lawsuit for these engines consuming oil. They are using their faulty manufacturing processes to get more money out of consumers. The only way they said they would approve an engine replacement is to have the engine seize up while driving. This is unsafe for the driver and also for the other motorists. This would put the driver and other motorists at risk because the car can become uncontrollable and could cause an accident. The car has been inspected by a dealer multiple times and they said they would not replace it until the engine seizes. Also Kia corporate said the same thing even though they lost a class action lawsuit. The warning...

My 2018 Kia Sportage (VIN: [XXX] ) triggered a check engine light and entered limp mode. Diagnostic scan revealed DTC code P1326, which is associated with the Knock Sensor Detection System (KSDS) and often linked to engine bearing failure in many affected Kia models. This happened at approximately 120,000 miles while driving under normal conditions. The car now runs in reduced power mode, making it unsafe for highway use or commuting. I contacted my local dealership, who confirmed no recall or campaign was active, despite this being a widely known and reported safety defect in Kia’s 2.4L GDI engines. I am requesting NHTSA to investigate this issue further, as many Kia and Hyundai vehicles with this engine have experienced sudden failures due to this defect. Kia should extend warranty support or issue a recall to prevent dangerous engine shutdowns. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5...

Excessive oil consumption and the engine is part of a "silent" recall. I would like my engine to be replaced before it blows up and causes serious injury or death. I do regular oil changes and I can't keep adding oil daily. If they knew about this issue why wasn't there a mass recall to get this fixed.

My check engine light has been on for some time . It will go off for a day and a half and then come back on . I was told by one garage that it was the catalytic converter. I have 99,339 miles on . It was tuned up and the light had gone off until the next day . Runs good and body is in great shape . I’m disappointed with this since it’s not covered ! And my lights are not working , the garage said it was a bad connection .

I had an oil change done because my engine oil level was showing low on the dipstick. I had just had an oil change about 2 months prior so it was not due but I thought that maybe there was an oil leak . On the way to my mechanic shop the check engine light came on so I had them to check it out. There were no visible oil leaks and they said they oil was extremely low. They did the full oil change and told me to bring it back 200 miles later to see if there was any oil lost. 200 miles later the car was down an entire quart of oil. My mechanic suggested I call Kia to advise them of the engine oil consumption issue. His words. I called Kia and was advised to bring it into the dealership for a diagnostic and consumption test....

I just found out by the jiffy lube manager where I go for my oil changes. That my Kia is involved in the oil consumption leak. I purchased it used and still making payments on the car. I have tried working this out with Kia and the dealership with no support or assistance in this matter, So frustrating when they know it’s an on going problem with their vehicles and the oil consumption leak. Really need help with this. I had two warranty on the car and the oil consumption leak is excluded from both. How convenient.

The contact owned a 2018 Kia Sportage. The contact stated while driving at an undisclosed speed, the transmission unexpectedly downshifted into first gear. While attempting to accelerate, the vehicle jerked and briefly lost motive power before slamming into gear. No warning light was illuminated. The contact stated that an abnormal burning odor was coming from under the hood and entered the vehicle through the A/C vents. The vehicle was taken to an independent mechanic; however, no cause for the failure was found. The thermostat and the electric switch on the driver’s side window were replaced. The contact stated that while driving uphill or going downhill, the RPM fluctuated, and the engine revved abnormally. The contact stated that the failure persisted. The manufacturer was not notified of the failure. The failure mileage was unknown.

I am writing regarding the KIA recall #SC336. About 6 months ago I noticed my 2018 KIA Sportage w 139,000 started using a lil oil. Then 3 days ago it starting cutting out & ck engine light came on. I called mechanic & took it into his shop. He put a coder reader on it and it said, misfire on #2. He did a compression test and there was 0 pressure on #2 cylinder. He then took a camera and went down and there is a hole in #2 piston. He recommends a new engine. He had me call the KIA Customer Care # however, they basically told me the deadline for class action suit expired and I had no remedy with them. My car was not acting up at the end of said deadline so, why would I have filed a claim?! I seen this info on recall #SC336...

Engine failure due to oil composition leaking.

first time I had an issue was in August 2023, my check engine light came on, the car was losing power and sputtering. when I would start the car, it would literally sound like a truck. come to find out, the 3rd cylinder was misfiring due to the piston rings being worn and possibly the coils being faulty and an engine replacement was needed. after going back and forth with the dealer (they had my car for almost a month) the engine was finally replaced. fast forward to last week, it started happening again. same cylinder, same issue. now my car is back in the shop waiting for a new engine (#2). my thing is this....did they use a rebuilt engine, or maybe just fixed the old one and call it new. either way, there is no reason I should need a new engine this close to having it repaired....

The contact owned a 2018 Kia Sportage. The contact stated that while driving at an undisclosed speed, he observed black smoke billowing from the engine compartment, after which the vehicle lost motive power, prompting him and his wife to evacuate the vehicle in the middle of the roadway. While attempting to retrieve important belongings from the vehicle, the contact stated that he heard what sounded to be an explosion within the engine compartment, causing him to fall backward and sprain his ankle. Moments later the front end of the vehicle was completely engulfed in flames. Local emergency services arrived and were able to extinguish the fire. The vehicle was towed to a tow yard and needed a total loss by the contact insurance provider. A fire report was filed. A police report was filed, but no injuries were reported. The contact later transported himself to an appointment with his primary...

Connecting rod bearing failure on 2018 Kia Sportage two months after having been to the Kia dealership for a knock sensor software update. (sensor update completed on 7/26/24 at Palm Springs Kia, RO# 6160694/1, engine failure occurred 9/23/24.) Upon doing research, I discovered that connecting rod bearing failure has been a recurrent issue over the years with Kia engines. I believe that my engine is also victim to this defect.

Code P0303. Took car to dealer for diagnosis, dealer recommended long engine block replacement due to bad pistons. Kia will not replace. Car has 68K miles on it. Called Kia and they will not even do a goodwill replacement. There is a history of engine failures on my same year and model car but not for this exact reason.

The contact owns a 2018 Kia Sportage. The contact stated while driving at various speeds, the vehicle was shuddering. Additionally, the contact became aware that the engine oil level was low, and the dipstick was dry. The check engine warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed that the piston rings and engine needed to be replaced. The vehicle was not repaired. The vehicle was later taken to an independent mechanic where it was also diagnosed and determined that the piston rings and engine needing to be replaced. The manufacturer was not made aware of the failure. The failure mileage was approximately 107,000.

At just over 120,000 miles the engine issues begain, # 4 cylinder misfiring, No compression # 4 cyl, would no longer Idel. The Dealer claimed the corrective action was to replace the engine. Are cars no longer expected to last past 100,000miles any more?

I bought a vehicle from a dealership in 2021. The dealership sold me a 2018 Kia Sportage. To their knowledge, they state they were unaware of any safety recalls. However, fast-forward to [XXX]. As I was entering a busy street (with my two young children in the car (both under the age of 5) and going up a hill, the oil light flashed once and then stayed on, I noticed the vehicle decelerating, as I tried to pull over, making way for vehicles to go around, all three (oil, battery and check engine) lights appear in my dashboard. After one failed attempt of restarting vehicle, I knew I needed to call a tow truck. Thankfully my mom wasn't too long to execute the rescue (it was about 32 outside). The vehicle was towed to the dealership I had purchased it from (NOT a certified Kia dealership mind you). I was...

My 2018 Kia Sportage was burning oil - had to add oil every week. On [XXX] I was driving on the [XXX] and my check engine light came on and the car slowed down. I got to the shoulder this was early in the morning I searched for a dealership and there was one 1 mile away It was 6 am when I arrived to the dealership and had to wait until they opened. And went to DCH Kia and eventually told me it was a cylinder that was blown. Why? Honestly I feel like this may have been a “false” diagnosis since the oil was burning up. I had extended coverage but they said it didn’t qualify for any engine recall. I had to get my entire engine replaced and was out of my car for over a month. Which I’m assuming the cylinder blew because of the oils...

The automobile began to burn oil excessively. The mechanic informed of an ongoing issue with Kia automobiles. Car taken to Kia. I was told nothing was wrong. Car continued to excessively burn oil requiring oil change at least every week. On January 7, while on the 15 freeway returning home the car slowed, then stopped. I had it towed to the Kia dealership. Yesterday

Vehicle stopped running smoke was coming from engine . Won’t start back up

The contact owns a 2018 Kia Sportage. The contact stated that while driving 10 MPH, the vehicle was jerking and hesitating while driving. The contact stated that several unknown warning lights were illuminated. The vehicle was towed to the residence and then towed to the dealer to be diagnosed. The contact was informed that the engine had failed and needed to be repaired. The vehicle was repaired. The manufacturer was made aware of the failure and advised the contact that there would be an reimbursement after legal matters were resolved. The failure mileage was unknown.

The contact owns a 2018 Kia Sportage. The contact stated that while her son was driving approximately 65 MPH, the vehicle independently accelerated. The contact stated that the check engine warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 117,000.

Oil leakage and engine locked while on the highway. No acident. Tried to accelerate and it wouldn’t go. Engine is gone and won’t start

Unknown, my Kia has been burning oil there is no oil leak and I had to get my oil changed every 2k miles. Then one day it started shaking on the freeway making noise and I had to exit 30+ miles from my city found the closest Kia dealership I took it there and they said I don’t qualify for the engine recall because it is a cylinder my car is a 2018 it’s 5 years old! There is no reason it should be having problems like this. I have now been out of a car and with a rental for a month now not only do I have to pay to replace my entire engine I have to pay for a rental. Oil shouldn’t be burning up. I’ve never had this happen before. And when I googled it it is a common issue in Kia’s same with cylinder issues....

Engine seized with no warning. Oil was being consumed but dealership said this was normal. Then it seized up now being quoted for $12,500 for new long block. They said it was a freak thing that happened. Something made a hole in my radiator. This is all lies.

I am being told my 5 year old Kia Sportage is going to need a new engine. It does have 122k miles, but other than that, I have never had an issue. After reading complaints made by hundreds of other Kia Sportage owners it seems there is a common denominator. A car made with a defective engine. I have been to the mechanic two times, for a routine oil change and have been told there is no oil in my car, even though both times they have stated there are no leaks. I need a solution for this that doesn’t cost me 4-10k on a new engine. When this issues should have never been a thing.

The contact owns a 2018 Kia Sportage. The contact stated that while driving at an undisclosed speed, the vehicle stalled and was unable to accelerate above 20 MPH. The contact stated that the vehicle lost motive power with the check engine warning light illuminated. The vehicle was towed to a local dealer, where it was diagnosed that unknown engine repairs were needed. The repairs were completed; however, the mechanic then diagnosed that the driveshaft needed to be replaced. The contact was informed that the warranty had expired. The vehicle remained at the dealer awaiting the repair. The manufacturer was made aware of the failure. The approximate failure mileage was 46,300. The VIN was not available.

The contact owns a 2018 Kia Sportage. The contact stated that while driving at various speeds, the vehicle independently accelerated with the tachometer elevated to 5,000 RPM’s. The contact shifted into neutral(N) to correct the failure. Neither the dealer nor the manufacturer was notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 87,000. The VIN was not available.

My 2018 kia Sportage got stolen and never received a letter from kia to prevent this from happening knowingly kias of this year and model were being stolen and mine got stolen March 23, 2023 is there any help for me ?

Engine failed while driving on busy highway at high speeds. Engine suddenly stopped, forcing us to coast to a stop on a narrow shoulder. Safety was impacted by the risk of impact by oncoming vehicles. Check engine lamp illuminated shortly before failure, giving little warning of a problem. Upon inspection of the engine, engine oil could be seen sprayed out from the front of the engine under the intake manifold area.

After an oil change on Jan 4, 2023, I have driven approximately 3500 miles. On April 12 I had to brake a little harder on a hill turn & the dash oil light came on & off. Took it to the garage to be checked. Analyzer said nothing was wrong. On April 13, it happened again at a stop light, immediately took it back to the garage to be checked. The mechanic discovered there was ZERO OIL in the engine, even though there was no sign of any leakage. I've seen no visible sign of burning oil and no off odor. Had garage do a complete oil change, (even though it should go 5k between changes), and will check after 1k miles. Mileage at oil change was 72078 and today 4/14/23 is approximately 72100 Were no accident and is not running (but I'm watching) but if the engine had seized...

Driving check engine light came on, reduced power. I purchased a warranty through dealer I purchased vehicle from took it there they ran code and it was P1326 knock sensor detection program. Had to go to Kia dealer. Had it towed and waiting to hear.

Purchased this vehicle from CarMax on 7/2/22 with 32,888 miles. During the next 4 months, we had to add 5.5 quarts of oil as the oil light kept coming on. The car was virtually out of oil by the time the oil light came on. Researching on the internet showed that millions of Kia cars apparently have this issue due to defective engines. Took the car to Greenway Kia on November 28 with approximately 40,000 miles. They performed the required tests, which proved the engine was excessively burning oil. However, Kia denied the warranty claim due to a lack of historical oil change records, which obviously we can't produce since we aren't the original owner. Now I'm left with no recourse and a vehicle that isn't safe to drive. Given that most of the Kia engines of this vintage have this issue, they should be required to recall the vehicles...

We own a 2018 Kia Sportage. We never had any problems with it, UNTIL NOW. I Drove it to work one morning, and was on the way home and suddenly without warning, no lights, or indicators came on, and the car started to shake, and lost full throttle response in the MIDDLE OF TRAFFIC. Immediately pulled over! Tried starting the car again, but the car was not cranking. We had to tow our car home, and was told our engine had to be replaced. We were checking out the engine, and notice there was a hole in it. Now keep in mind, we've never had any problems with our KIA until now. So it was odd. We checked the N.H.T.S.A and the KIA has 2 recalls, and we were not aware of them. We called the manufacturer to see if they called replaced the engine but they denied us. So...

The RPM randomly goes up and down frequently. When I took it in to the dealer they test drove it and said didn’t do it and blew me off.

9/15 car goes in limp mode on expressway. Get to towed to dealership. Get the car back on 9/17. Only make it about 20 miles, and the same thing happens again. I’m able to make it back to the dealership the same day. On my way home. Pick up the car on 9/19. Happens again on 9/20. Now I am being told I need a full engine replacement. The dealership has no loaners to give out. They are expecting me to pay for a rental in hopes of getting reimbursed. I am a single mom. I work in sales and drive in my territory every single day I do not have the money to put out for the rental and now after researching, it could be months before I get the car back.

I was driving and the car and it just stopped. The oil light and engine light came on and now it’s making a clicking noise, now. I am not driving the car but I was told that my car had no oil in it and investigation was conducted by a shop that confirmed that the last oil change was conducted as expected, on July 30, 2022. A professional mechanic advised me to contact you all and inform you all of what happen and that you all have made consumers aware of the possible issues that could occur and actually happened.

My check engine light came on. I had the code diagnosis done and it came back P200A. When I try to accelerate, my car will not accelerate up hills or on the interstate. I’ve noticed this happening occasionally before the check engine light came on but the car wouldn’t do it when I took it to the dealer when it was still under warranty and since the check engine light wasn’t on at the time, they said there was nothing they could do. I’ve also noticed on occasion the car dashboard and radio will randomly flash when I am driving.

My car engine failed due to extreme oil consumption. It ran out of oil completely after 2K miles from my last synthetic oil change and damaged my 3rd cylinder. I have maintained the car perfectly and done all recommended repairs. My car only has 66K miles and already needs a new engine.

The contact owns a 2018 Kia Sportage. The contact stated that while driving a knocking noise was suddenly present coming from the engine and warning messages were present on the dashboard display before the vehicle stalled. Later while attempting the start the engine a burning odor and smoke were present coming from the engine compartment. The engine was turned off and the smoke dissipated. The cause of the failures was not determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 86,000.

Vehicle engine accelerated and raced without warning with foot on brake. Has occurred on several occasions with different household operators. Vehicle has about 18,000 miles.