2021 Kia Sorento Engine Problems

"The vehicle has twice suffered a sudden, catastrophic loss of motive power at highway speeds (approx. 70 MPH) on the interstate, forcing the driver to coast across active traffic to the shoulder without engine pull. The engine revs freely in 'Drive' but the transmission fails to engage any gears. No dashboard warning lights, check engine lights, or diagnostic trouble codes are triggered during or after the failure. The failure resets temporarily only after cycling the ignition key off and on.The vehicle previously had Safety Recall SC250 (8-speed Electric Oil Pump) performed by an authorized dealer, but the software flash completely failed to prevent this catastrophic hydraulic/electronic failure mode or provide the federally mandated dashboard warning countdown. The vehicle is entirely unsafe to drive,

NHTSA ID

11752940

Incident

Jul 24, 2026

previous warranty repair for a failed fuel injector (RO #1103175) resulted in severe gasoline dilution of the engine oil. the vehicle now vents raw fuel vapors into the cabin (Fire Hazard) and hesitates/jerks when braking at stoplights (Stall/Crash Hazard). Kia Corporate has refused to communicate for over two weeks while the dealer holds the car.

NHTSA ID

11751993

Incident

Jun 23, 2026

I am filing this complaint regarding my 2021 Kia Sorento, which has suffered a transmission failure. The transmission slips, shifts harshly, hesitates during acceleration, loses power unexpectedly, and has become unsafe to drive. This defect has put my safety and the safety of others at risk. On several occasions the vehicle failed to respond properly when accelerating, including while entering highways and driving in traffic. The hesitation and sudden loss of power created fear and anxiety because I could not trust the vehicle to operate as expected. The problem has been reproduced and confirmed by a repair facility, and the symptoms are consistent with a transmission torque converter clutch failure. I also contacted Kia and provided the vehicle information. Kia informed me that they would not repair the vehicle because it has exceeded 100,000 miles and that the recall or warranty extension had expired. However, my vehicle is experiencing the same transmission-related symptoms reported by many other Kia owners.I never received any recall notification because I purchased the vehicle from a dealership as the second owner. Had I been properly notified, I would have taken the vehicle in for inspection much earlier or would never have purchased the dangerous vehicle in the first place. It is extremely frustrating and costly to be denied assistance solely because of mileage when the failure appears to be related to a known transmission defect.Before the failure, the check engine light illuminated and then went away even though the issue did not. Prior to that warning, the vehicle had already shown delayed shifting, slipping, hesitation, rough gear changes, and loss of power, which became progressively worse. I reported this to Kia on a previous service visit to Romeo Kia in Lake Katrine, NY and was told they did not find anything wrong. This situation has caused significant emotional stress and anxiety. I am requesting a full review and a fair resolution from kia. Thank

NHTSA ID

11751825

Incident

Jul 21, 2026

I am filing this complaint regarding my 2021 Kia Sorento, which has suffered a serious transmission failure. The vehicle is displaying diagnostic code P0741, indicating a torque converter clutch malfunction. The transmission slips, shifts harshly, hesitates during acceleration, loses power unexpectedly, and has become unsafe to drive. The vehicle is available for inspection upon request.This defect has put my safety and the safety of others at risk. On several occasions the vehicle failed to respond properly when accelerating, including while entering highways and driving in traffic. The hesitation and sudden loss of power created fear and anxiety because I could not trust the vehicle to move when needed to avoid a dangerous situation. The problem has been reproduced and confirmed by a repair facility, and the symptoms are consistent with a transmission torque converter clutch failure. I also contacted Kia and provided the vehicle information. Kia informed me that they would not repair the vehicle because it has exceeded 100,000 miles and that the recall or warranty extension had expired. However, my vehicle is experiencing the same transmission-related symptoms reported by many other Kia owners.I never received any recall notification because I purchased the vehicle from a dealership as the second owner. Had I been properly notified, I would have taken the vehicle in for inspection much earlier. It is extremely frustrating and financially devastating to be denied assistance solely because of mileage when the failure appears to be related to a known transmission defect.Before the failure, the check engine light illuminated and code P0741 appeared. Prior to that warning, the vehicle had already shown delayed shifting, slipping, hesitation, rough gear changes, and loss of power, which became progressively worse.This situation has caused significant emotional stress, anxiety, and financial hardship. I am requesting a full investigation and a fair resolution from kia.

NHTSA ID

11750887

Incident

Mar 1, 2026

Car losing power

NHTSA ID

11746909

Incident

Jun 27, 2026

The vehicle is suffering from a chronic, cascading powertrain and fuel management defect that has resulted in a critical safety hazard: sudden engine stalling. Over the last 17,000 miles, the vehicle has experienced three severe engine/emissions failures that the manufacturer has been unable to permanently resolve. At approximately 30,000 miles (on 29-Jun-2025), the engine suffered a severe Cylinder 3 misfire (Code P0303). At approximately 39,000 miles (on 02-Jan-2026), the unresolved fuel issue caused a failure of the Catalytic Converter (Code P0420) and an Evaporative Emission System leak (Code P0456). At 47,000 miles (Current Event), the fuel delivery system failed completely. The engine began running excessively rich (Code P2178), causing the engine idle to drop dangerously low (Code P0506). This defect caused the vehicle to suddenly stall out, resulting in a complete loss of motive power and leaving me stranded. Because the manufacturer's authorized repair facilities have only addressed the symptoms rather than the root cause of the fuel system failure, the vehicle repeatedly loses power and stalls without warning. This poses a severe safety risk to myself and other motorists, especially when operating the vehicle in traffic or at highway speeds.

NHTSA ID

11743204

Incident

Jun 8, 2026

The contact owns a 2021 Kia Sorento. The contact stated that while driving at an undisclosed speed, the vehicle unexpectedly jerked and then lost motive power with the check engine warning light illuminated. The vehicle was able to restart. The vehicle was taken to an independent mechanic, where it was diagnosed that the low-pressure and high-pressure fuel injectors and gasket had failed and needed to be replaced. The vehicle was not repaired. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 92,779.

NHTSA ID

11738166

Incident

May 15, 2026

Mileage

92,779 mi

COMPONENT: 2.5L T-GDI engine failed completely at 102,971 miles, requiring full replacement (~$8,000). Vehicle available for inspection at [XXX] Kia, [XXX] . SAFETY RISK: Engine lost power during normal operation. Sudden, uncontrolled loss of engine power creates a direct collision risk at highway speeds for the driver, passengers, and surrounding vehicles. CONFIRMED BY DEALER: Mark Kia performed a borescope inspection on April 10, 2026 confirming cylinder wall scoring, oil-fouled pistons, and worn honing patterns across multiple cylinders. Findings are consistent with Kia TSB ENG235 (January 2022), which documents a defective PCV check valve on 2021–2022 Sorento 2.5T engines allowing oil to contaminate combustion chambers. Vehicle was serviced exclusively at Mark Kia for all 17 visits since 2021. TSB ENG235 does not appear in any service record. PRIOR SYMPTOMS: No warning lamps or messages before failure. A certified 36-point inspection one week prior showed zero cautions. Spark plugs replaced at 74,534 miles (Jan 2025) were found fouled at ~102,000 miles, only 28,000 miles later — indicating silent, progressive oil contamination. The defect is undetectable by the driver until catastrophic failure. Kia America has not responded to two formal written dispute requests (Case #XXX, April–May 2026). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11737713

Incident

Apr 10, 2026

The contact owns a 2021 Kia Sorento. The contact stated that while driving 50-60 MPH, the check engine warning light illuminated. The vehicle hesitated and jerked while depressing the accelerator pedal. The vehicle was taken to Firestone, where the spark plugs and ignition coils were replaced; however, the failure recurred. The vehicle was taken back to Firestone, where it was diagnosed with transmission failure, and the contact was referred to the dealer for assistance. The vehicle was taken to the dealer, where the fuel injectors were replaced, and the transmission oil pump was replaced under NHTSA Campaign Number: 22V760000 (Power Train); however, the failure recurred after driving 6,000 miles. The vehicle was taken back to the dealer, where the transmission oil pump was replaced under warranty; however, the failure worsened. The contact stated that while driving approximately 30 MPH, the vehicle stalled in the middle of the roadway. The contact was unable to pull over to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and it was determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was filed. The contact was referred to another dealer for a second opinion. The failure mileage was approximately 86,000.

NHTSA ID

11733941

Incident

Apr 27, 2025

Mileage

86,000 mi

Our 2021 Kia SORENTO has been to Elmhurst kia service numerous times . The chief complaint is the Kia Sorrento keeps losing power while in drive reverse middle traffic even on the highway but yeah every time we take it in, they say either it’s the battery .you can’t use it in the Eco mode .turn off the shut off while in drive mode when at stops ! always a different excuse, but yet no recall and it’s not showing up on their computer, but yeah it’s happening and Kia does not want to take ownership. The vehicle has been left there for numerous weeks at a time leaving us without a vehicle no loaner . But because cannot duplicate issue release vehicle back with no repairs or maintenance. Kia prefer you taking the car getting into a car accident before they decide to do anything or even a lawsuit because not enough people having same issue with the 2021 kia SORENTO s model ! If you also have these issues please report them here so they can be forced to open a recall !!! Before someone gets seriously hurt my SORENTO has loss power on highway and in the middle of train tracks with my little ones in SORENTO and we drove the vehicle from day one original owners not a used SORENTO

NHTSA ID

11731006

Incident

Apr 3, 2026

My check engine light came on and went to dealer ship jn Oct of 2025 they stated the Egr needed to be replaced and would cost 1300 to repair but inform me they didn't have the piece to replace at that time to reschedule app. Also reservoir coolant light keeps coming on . I called several times to Lumberton Kia at one time they stated that they didn't have but 1 mechanic that worked on hybrids and he was behind. I finally have a appointmentthis weekto see what is exactlygoing on with my suv cause now i have a hesitation when pressing the gas and my transmission jerks.

NHTSA ID

11727620

Incident

Mar 16, 2026

This has been occurring intermittently since my 2021 Kia Sorento reached approx. 15k miles and now has 26,600 miles. There are no lights or indicators on the dash letting me know anything is wrong. When the vehicle is stopped at a traffic light or stopped in heavy traffic, the vehicle will start idling high and shaking and the engine will seize up. I am not able to steer, the brakes lock up, I cannot accelerate, all functionality is lost. The only thing I can do is put the vehicle in park (in heavy traffic) and shut the car off and wait a minute and turn it back on and it seems to reset itself. This is EXTREMELY dangerous for myself and my passengers (some of which are children) and can cause a serious accident. At no point should I ever need to be concerned with my vehicle seizing up in the middle of the road and having to park and restart my car. This has happened on several occasions already. I have taken my car to 2 separate Kia dealerships to address this problem I have been experiencing. The first dealership failed to attempt to duplicate the problem and instead informed me the firmware update the performed from a previous recall should remedy the problem. It did not. Then I recently took it to another Kia dealer in another state and explained the situation. I specifically asked them to take the vehicle for a test drive and they argued with me that my battery was low and needed to be replaced and it would not be covered under the warranty. I have been driving this vehicle for a while and it has been having this issue around 15k miles so I know it is not the battery. They totally disregarded the safely of myself and my family and only focused on making money for themselves. This is a serious safety issue with this vehicle and has continuously been swept under the rug by Kia. Even the customer service is rude and I have reported this to them and asked for an escalation to their consumer affairs dept and have received no response.

NHTSA ID

11725971

Incident

Mar 2, 2026

My vehicle completely shut off while I was driving with my children in the car. The dealership replaced the battery but never identified the root cause. Since then my car has been experiencing RPM surging while in Park — the engine revs up and down repeatedly on its own. The vehicle also feels sluggish and does not want to accelerate properly while driving. Additionally since taking ownership of the vehicle my window has squealed every time it rains and I roll down the window. The dealership has replaced the seals, lubricated and cleaned the window multiple times and the problem persists. The defective window seal also caused a gash in my window tint requiring replacement. I have taken my car to my Kia dealership multiple times and they have been unable to fully resolve these issues. My car is currently at the dealership right now and they still cannot find the problem. I contacted Kia Corporate on March 20, 2026 and opened a formal case. These defects have put my children in danger and I am requesting a formal federal investigation.

NHTSA ID

11725815

Incident

Aug 1, 2025

I was driving my car on [XXX] and my car suddenly lost power and when I pressed the gas pedal the RPM quickly increased but the car was hesitating between gears and not engaging. Shortly thereafter a malfunction code showed up on my car screen along with an engine warning indicator. The code was DCT P193B79. That code indicates a High Pressure Electric Oil Pump Performance issue pointing to problems with the 8WDCT; the same issue and symptoms associated with the recall bulletin for the 2021 Kia Sorento Transmission. When I brought it to Ken Gariff Kia in Phoenix Arizona they stated there is no such recall for my vehicle with this problem and that since I have 76000 miles on the car it is not covered. I feel that this repair falls squarely within the scope of the recall for the Kia transmission and would like it replaced at the manufacturers expense. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11710554

Incident

Jan 10, 2026

I would like to report that the 2021 Kia Sorento SX X-Line Prestige I own has a chronic oil leak from the oil pan. The dealer has attempted to reseal the pan two times and has replaced the pan and gasket once as well. The vehicle has leaked oil since it was practically new and poses an environmental hazard.

NHTSA ID

11696881

Incident

Dec 22, 2022

Sorento is not working properly due to transmission oil pump. This has been recalled by Kia but my car does not fall under the warranty.

NHTSA ID

11694558

Incident

Aug 12, 2025

The contact owns a 2021 Kia Sorento. The contact stated that while driving approximately 10 MPH over a speed bump, the vehicle shut off. The contact was unable to pull over to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed with a bad connection at the fuel pump fuse box. The dealer performed a minor wiring repair. The contact stated that while driving 60-80 MPH, the vehicle failed to accelerate as intended, and the vehicle shuddered and then jolted. The vehicle was taken to Calavan Kia [XXX] ), but the failure could not be duplicated; however, the coils were replaced. The contact stated that upon starting the vehicle, several unknown warning lights were illuminated, and the vehicle was inoperable. The contact stated that upon restarting the vehicle, the warning lights were turned off, and the vehicle operated as needed. The contact also stated that the vehicle was making an abnormal rattling and ticking sound while driving. The vehicle was taken back to the second dealer, where the failure could not be duplicated; however, the failure persisted. The vehicle was taken to a third dealer, Ed Voyles Kia [XXX] ), where the failure could not be replicated. Additionally, the contact stated that A/C system was inoperable. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 6,099. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11691076

Incident

Nov 28, 2021

Mileage

6,099 mi

My car will sometimes completely stall at a light when stopped and not restart with the Automatic stop system it has happened about 5 times almost causing a wreck.

NHTSA ID

11677985

Incident

Aug 2, 2025

I have had many issues where my car will completely shut off after the auto start-stop function causing me to almost get into accidents with my toddlers in the vehicle. There was one incident where I was at a stop light, when the light turned green I started my car again to go and another vehicle continued to bypass me. When i halted for the other vehicle, my engine shut off again almost the cause of a horrific accident. I have had many incidents after this with the related cause of engine shutting off.

NHTSA ID

11673190

Incident

Jun 10, 2025

I am writing to file a formal complaint regarding Recall 22V-760 (SC250) affecting my 2021 Kia Sorento. This recall was marked “complete” by Kia, even though no actual repair or remedy was performed on my vehicle. I am now facing a complete transmission failure and have been quoted $7,100 to repair a defect Kia already acknowledged and promised to fix. The reality is, the defect was always present, it just hadn’t reached full failure yet. The recall being closed does not mean the issue was resolved, and this approach leaves thousands of Kia owners like myself unprotected.In May 2023, I brought my vehicle to Daphne Kia in Alabama for a radiator leak. During that visit, they noted the transmission recall was open but stated that no defect was found. As a result, they marked the recall as “complete” without conducting any meaningful repair or replacement. No transmission work was done, despite known problems reported nationwide.In May 2025, my Sorento began showing the exact symptoms described in the recall: surging RPMs, transmission hesitation, jerking, and drifting in and out of gear. At times, the vehicle would slow dramatically or jolt in the middle of traffic and lose drive! Extremely dangerous situation for me in traffic with complete loss of acceleration. I had to take time off to bring the vehicle to Step One Automotive Kia in Fort Walton Beach, Florida, on June 30, 2025 the soonest my schedule allowed. At that appt, I was told the transmission had failed and would cost over $7,000 to replace.I also am paying for a rental vehicle while my car is still with Kia for resolution as of now. Recall coverage did nothing to protect me when the defect eventually surfaced. Kia has publicly stated that:“If your vehicle is affected by a recall, Kia will repair the vehicle free.” They have a legal obligation under the National Traffic and Motor Vehicle Safety Act to correct safety related defects.They are not meeting that. kia consumer relations contacted as well.

NHTSA ID

11670967

Incident

May 30, 2025

The stop go feature is not working correctly, when it does cut off at a light after releasing the brake to move forward it takes 3-5 seconds to start. when the cars behind me see that i release the brake they assume im going to move which doesnt happen at first. some occasions the stop n go just doesnt work at all.

NHTSA ID

11651656

Incident

Mar 31, 2025

On three separate occasions, after starting the vehicle, the car cannot be accelerated above 30 mph. The Idle Stop and Go (ISG or Auto Start Stop feature) light flashes orange, but no other warning symbols are illuminated. After safely moving the vehicle off the road, I have to turn off the engine, wait for 2-4 seconds, and restart the engine. Once the vehicle is restarted, the vehicle accelerates normally. This issue has happened twice in the past month. I plan to take my car to a Kia dealership for an inspection, but since this problem happens randomly, the Kia technicians may not be able to reproduce the problem. I purchased this vehicle used with about 77k miles in December 2023. I first noticed this issue in April 2024. The vehicle now has a little under 98k miles recorded.

NHTSA ID

11650413

Incident

Mar 24, 2025

The contact owns a 2021 Kia Sorento. The contact stated that intermittently, the transmission was slipping. Additionally, the vehicle failed to go into Standard Mode. While driving, the vehicle lost motive power while driving at 15 MPH. The check engine warning light was illuminated. There was an “S” symbol displayed. The vehicle was taken to the local dealer, where it was diagnosed and determined that the system needed to be reset. The vehicle was repaired, but the failure recurred. The vehicle was taken back to the local dealer, where it was diagnosed that the sensor or wheel speed sensor needed to be replaced. The vehicle was not repaired. The manufacturer was contacted. The failure mileage was approximately 30,000.

NHTSA ID

11650125

Incident

Jan 22, 2022

Mileage

30,000 mi

Was driving and car lost all power then violently shifted to the next gear and almost caused an accident

NHTSA ID

11649653

Incident

Mar 20, 2025

The contact owns a 2021 Kia Sorento. The contact stated while accelerating from a complete stop and while driving at various speeds, the accelerator pedal was depressed, and the vehicle shuddered and hesitated to respond while the engine revved. The check engine warning light was illuminated, and the vehicle made a dinging sound. The contact stated that the RPMs fluctuated while idling. Additionally, the contact stated that upon manually shifting to Sport Mode, the vehicle failed to respond as needed. The vehicle was taken to O'Reilly Auto Parts, where DTC: P193B and P193B79 were retrieved. The dealer was notified of the failure and informed the contact that a fee would be charged for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 36,000.

NHTSA ID

11648316

Incident

Feb 14, 2022

Mileage

36,000 mi