2021 Kia Sorento Fuel System Problems

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2021 Kia Sorento owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2021 Kia Sorento. The contact stated that after parking the vehicle, the contact noticed that the exhaust started to leak. The contact also stated that the engine was overheating. The contact stated that there was no warning light illuminated. The vehicle was taken to an independent mechanic but was not yet diagnosed. The vehicle was not repaired. The contact was relating the failure to NHTSA campaign number: 21V519000 (Fuel System, Gasoline). The manufacturer had not been informed of the failure. The failure mileage was approximately 7,911.

The issue appears to involve the electric oil pump and related components. My 2021 Kia Sorento had a recall for the electric oil pump that was marked "completed" in January 2023; however, the dealership only performed a software update and did not replace any mechanical components because no fault code was present at that time. Beginning around October 2025, the vehicle started experiencing drivability issues including hesitation and bogging down when accelerating from a stop. A dealership representative later stated the electric oil pump and housing likely need replacement and that the transmission may also be affected. The vehicle is available for inspection upon request. This issue creates a safety risk because the vehicle frequently hesitates or bogs down when attempting to accelerate, especially when pulling into highway traffic. …

COMPONENT: 2.5L T-GDI engine failed completely at 102,971 miles, requiring full replacement (~$8,000). Vehicle available for inspection at [redacted] Kia, [redacted] . 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. …

I was driving my car on [redacted] 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.

My 2021 Kia Sorento has been losing drive power, shuddering when we accelerate, hesitate when starting from a stop or parked position, and having issues accelerating at different and random speed intervals. This is a safety concern because it can cause an accident or for us and others or cause us to lose the ability to control the vehicle Everyone is also at risk if my car stops responding to me pushing the gas and it will not let me continue, increase, decrease or become entirely unresponsive could cause my entire family to die. It has been reproduced by a local service center. The vehicle has not been inspected by the manufacturer, police, or insurance representatives. No warning lamps, messages have appeared at any time. The first symptoms started with short shuddering for a quick second or two every now and then. …

I am unable to open the gas tank door. The gas tank door is open and closed by pushing in the gas tank door on the right side. I have not had a problem with this until recently. The information in the owner's manual indicates to check that doors are unlocked. I have completed that step. I am almost out of gas now. I consider this a safety issue because there is no emergency release for the gas tanks and thus someone may be confronted with this issue during a long trip from home. This does not appear to be an isolated incident. At the very least, Kia should publish a service bulletin that this is a common problem and how to fix it so all of its owners do not need to navigate on their own. I am in the process of getting an appointment with dealer but there is no guarantee they will have the part and they told me the first available appointment is one week away.

"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,

As I was taking off from stop sign car dropped into lower gear jerking car and lowered speed. Did this twice almost causing an accident. Knowing something was very wrong we proceed to Dealership. SUV stalled out 3 times on the way. Third time it stalled out was in front of service writer in front of dealership.This car has been very dangerous to drive from the delivery to now. It hesitates when you give it gas at stop and vibrates as you pic k up speed. This car is very dangerous to drive. Has been in shop for a week tring to figure out the problem. I have complained to service department about this ever since I have owned the car. Thanks for any help. I know I,m not the only one with this problem. Pat McGrath.

The system that failed is the high-pressure fuel pump and the intake fuel pump. The fuel system pressure is too low, and the cold start fuel pressure is too high. This is defective because I purchased the car used in November 2023. The car is a safety risk as it stalled immediately yesterday while I was driving with my children and it began smelling like gas fumes from exhaust. The vehicle has been diagnosed by a certified mechanic at Mike and Nick's Tires and Services in Canyon Country, California No warning lights or messages appeared prior to the failure. The engine light came on as soon as the car began to stall and shake/lose power.

On [redacted] im driving my 2021 Kia Sorento sx it stalled while driving in the mist of traffic engine light comes on and I had my car towed contacted Kia of Bowie they are giving me a hassle contacted them because this is a safety issue from the beginning I have mentioned gas smell coming from the oil dipstick now the car has say and the gas has evaperated and they are saying no gas smell contacted corporate and Istill have no results. This is a serious issue and I am being mishandled and treated as if this is not a severe safety hazard and needs to be addressed by Kia I am asking for assistance PLEASE IN SERIOUS SAFETY MATTER.

Related recalls

Fuel System complaints in other Sorento years