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2015 Kia Sorento engine problems

367 complaints (49% of all complaints for this car). Typical mileage when it fails: 87,780. 6 crashes reported.

owner complaints
367
of this car's complaints
49%
typical mileage
87,780
crashes
6
recalls
1

Which part fails

Owners did not name a specific part.

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Kia Sorento engine problems in other years

200320052010201520202026

Specific symptoms reported on the 2015 Kia Sorento engine

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Engine failure 166Check engine light 115Knocking 103Stalling 71Loss of power 42Oil consumption 25Won't start 21Overheating 16Misfire 8

Related recalls

EngineReported December 19, 2018 · 71,653 vehicles affected
What is wrong
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V‑224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.
Risk
A fuel leak in the presence of an ignition source can increase the risk of a fire.
Remedy
Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC172.

Recall number 18V907000 · Recall details

Related investigations

Loss of Motive PowerOpened September 12, 2022, closed December 12, 2023

the federal safety agency received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitioners’ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODI’s evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to the federal safety agency which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan assemblies of the subject vehicles. Based on a review of the available information, a loss of motive power resulting from an oil drain plug back out has not occurred between the initial sale of a vehicle and the completion of its first oil change. If during an oil change service, a technician fails to remove the existing drain plug gasket before installing a new gasket, it is likely that a proper seal between the drain plug and the oil pan will not be made. An improper seal between the drain plug and oil pan could lead to the backing out on the drain plug, resulting in the sudden loss of oil while driving. Additionally, the provided examples of oil pan cracks were localized to the immediate vicinity of the oil drain plug and/or appeared to be the result of direct-contact with a tool during servicing.  There is no information to support that a vehicle-based defect exists relating to the oil pan assembly, and instead the documented incidents are related to the failure to follow the proper maintenance procedures during oil change service. In October 2023, Hyundai published a Technical Service Bulletin (TSB) that provided detailed instructions for oil change service on its gasoline powered vehicles, specifically highlighting the need to remove and replace the existing drain plug gasket prior to reinstalling the drain plug. After a thorough review of the material submitted by the petitioner, the information already in the federal safety agency's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, the federal safety agency does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing the federal safety agency’s reasons for denial of the petition will be published. The reference numbers for the complaints to the federal safety agency cited by the petitioner can be found in the petition submission documents in the public file for DP22-003. To review those complaints and the additional complaints ODI added to its evaluation which are cited in the Closing Resume ODI Report Identification Number document, go to

DP22003

Engine Oil Pressure Switch LeakOpened November 12, 2021, closed June 26, 2023

In a letter dated September 30, 2021, Mr. Gerald James (the petitioner) requested that the federal safety agency conduct an investigation of the Model Year (MY) 2015-2017 Kia Sorento equipped with 3.3L V6 ?Lambda? engines for ?severe oil leaks? from the oil pressure switch (OPS) that could ?lead to engine failure? with little warning to the driver. Mr. James based this request on his own experience and data found in the federal safety agency?s Vehicle Owner Questionnaire (VOQ) database. the federal safety agency reviewed the material cited by the petitioner, information submitted by Kia, the federal safety agency?s testing, and other pertinent information in the federal safety agency databases.On November 12, 2021, ODI opened Defect Petition DP21-002 to evaluate the petitioner?s request. ODI performed an analysis that included evaluation of the petitioner?s vehicle, searches of ODI complaints from vehicle owners, non-dealer field reports, manufacturers? supplemental information relating to design of the component, and component testing performed by ODI.On December 16, 2021, ODI and Kia North America performed a joint inspection on the petitioner?s vehicle. ODI and Kia agreed the OPS was leaking oil and observed oil in the crevices atop the engine block. The vehicle received a new replacement OPS and was delivered back to the petitioner. The original part that was removed from the subject vehicle was retained by ODI for further analysis.As of December 30, 2022, for the MY 2015-2017 Kia Sorento population of 161,519 vehicles with 3.3L engine, the federal safety agency reviewed internal data and has identified no consumer complaints or field reports in its database, with unique Vehicle Identification Numbers (VIN), citing engine failure or stalling related to the petition?s allegation of defective OPS. When combined with the supplemental warranty and technical analysis from the manufacturer, field report and customer complaint data in response to the Information Request letter sent, the federal safety agency identified no unique VINs alleging engine failure or stalls caused by OPS leaking on the subject vehicles named in the petition.On April 4, 2022, the Vehicle Research and Test Center (VRTC) performed testing of the petitioner?s component (OPS) based on testing protocol consistent with Kia?s specifications for the subject vehicle. The testing involved the petitioner?s original OPS in a controlled system to replicate the subject vehicle?s oil pressure, flow, and temperature. VRTC determined that a vehicle would have to miss more than a dozen oil change intervals to reach low engine oil capacity. Testing also revealed the OPS would operate, as manufacturer intended, illuminating the vehicle?s MIL to alert the driver of lower oil pressure.In April of 2022, Kia North America issued a warranty extension that extended the coverage of the Oil Pressure Switch from 5 years/60,000 miles to 15 years/150,000 miles on MY 2014-2018 Sorento, MY 2014-2016 Cadenza, and MY 2015-2018 Sedona vehicles, all equipped with the 3.3L Lambda engine. The extended warranty coverage includes diagnosis, repair, and applies to customers experiencing engine oil leaking from the engine or if the engine oil pressure warning light stays illuminated after the engine is turned on.After a thorough review of the material submitted by the petitioner, information already in the federal safety agency's possession, testing performed by VRTC, technical information provided by Kia, the potential risks to safety implicated by the petitioner's allegation, the federal safety agency does not believe that an engine failure due to the alleged defect is likely and does not warrant a formal investigation. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing the federal safety agency?s reasons for denial of the petition will be publi

DP21002

What 2015 Kia Sorento owners say

Most recent owner complaints, unedited.

Filed Oct 13, 2026 · Engine · 207,000 miles · OH

The contact rented a 2015 Kia Sorento. The contact stated that the headlights and tail lights intermittently failed to illuminate or shorted out, and the check engine warning light illuminated. While driving at approximately 35 MPH, the vehicle suddenly seized in the middle of an intersection, and the contact was unable to move the gear shifter out of gear. The local police department arrived on the scene and assisted the contact by disassembling components around the gear shifter in order to shift the transmission into neutral (N). The vehicle was then towed back to the rental business. The failure mileage was approximately 207,000. The VIN was not available.

Filed Oct 11, 2026 · Engine · MS

My car's check engine just started flashing and the ECU has reduced my drivability to limp mode stating that my knock sensors are showing up on scan test and camshaft position exhaust sensor. When I removed the camshaft exhaust vvt sensor it indeed had metal shavings on it. A have a P1326 and a p0014 code which is basically telling me that my engine is having issue within the internal engine and oil consumption.

Filed Oct 5, 2026 · Engine · TX

1) The engine control system / KSDS knock sensor system triggered safety recall code P1326, accompanied by a flashing check engine light. The vehicle and components are currently at the dealership available for inspection under RO #148484 (Issued on October 2) 2) A flashing check engine light and active P1326 code indicate a potential severe engine failure or severe misfire risk while driving, forcing the vehicle to lose power and rendering it unsafe for operation on public roads. 3) Yes, the vehicle was towed to an authorized Kia dealership on September 24th; however, the dealer initially refused to generate a Repair Order or diagnose the safety recall for over a week until corporate intervention forced RO #148484 to open on October 2nd. It is currently awaiting diagnostic testing. 4) No. It has only been towed to the authorized dealer facility where it awaits initial diagnostic testing under the active safety recall. 5) Yes. A flashing check engine light and code P1326 appeared immediately prior to towing the vehicle to the dealership on September 24th.

Filed Sep 11, 2026 · Engine · AZ

I was driving my 2015 Kia Sorento on [XXX] south of the [XXX] junction when the engine suddenly started making severe mechanical noise and the vehicle seemed to have significantly reduced power. This is a remote stretch of highway with no usable shoulder. I had my son with me and had to immediately navigate with reduced speeds and power until I could reach a pullout and get safely off the highway. The sudden engine problem at highway speed created a serious safety concern because I could not immediately get the vehicle out of the traffic lane, and had no immediate shoulder I could pull onto. The vehicle was subsequently inspected by Oxendale Kia dealer. The dealer diagnosed catastrophic internal engine bearing failure. The vehicle has approximately 160,000 miles. The vehicle and failed engine are currently at the Kia dealer. Availability of the failed engine/components for inspection: UNKNOWN pending confirmation from the dealer. Prior warning lamps or warning messages: No engine lights. An airbag light was illuminated. There were no other warning immediately before the failure. The failure has been confirmed by the Kia dealer. Kia America has also opened a corporate case and is obtaining the dealer's diagnostic information, but to my knowledge Kia corporate has not separately physically inspected the vehicle. I am aware that the federal safety agency has previously investigated loss-of-motive-power issues involving 3.3L Kia Sorento engines, including model years around mine. I am submitting this complaint so this catastrophic bearing failure and highway safety event can be evaluated with any similar reports. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 5, 2026 · Engine · TN

My 2015 Kia Sorento is experiencing a catastrophic structural failure of the exhaust system where the front manifold catalytic converter has internally collapsed This is a severe safety hazard because the physical blockage of the exhaust flow creates massive engine backpressure stalling when trying to drive even a small hill on highway, risking sudden engine stalling, unprompted deceleration, and power loss at highway speeds, which increases the risk of a crash. Furthermore, the blocked exhaust gases generate extreme temperatures under the hoods if it's running hot presenting a distinct vehicle fire hazard. I have maintained this vehicle and had all previous safety campaigns addressed, including a complete engine replacement and the required engine control software updates. Despite these recalls being fully completed, the vehicle has still suffered this severe exhaust system failure. The Check Engine light was on, and diagnostic scanning shows fault code P2096.I thought it was my transmission but a professional dealer assessment confirmed a manifold catalytic converter," "contamination of honeycomb on front of rear catalytic converter," and severe "contamination on the O2 sensor."He could not fixed An oxygen sensor replaced had to be fixed by someone else Abrasive ceramic dust from the melting manifold structure is actively being drawn back into the engine cylinders, threatening to destroy the newly replaced engine that Kia replaced but . this failure mirrors the exact physical mechanics and safety risks outlined in Kia's previous safety campaign SC176 (the federal safety agency Campaign 19V‑120). Despite experiencing the identical defect and safety threat on a fully updated vehicle, my VIN was excluded from the recall I am filing this complaint because this known safety defect poses an active threat to my safety.my husband was a 100% disable vet who passed in April 2025,I can'a afford to have this same item repaired that Kia suppose to have repaired,Please help me

Filed Jun 25, 2026 · Engine · OK

My 2015 Kia Sorento is experiencing a catastrophic structural failure of the exhaust system where the front manifold catalytic converter has internally collapsed and broken apart. This is a severe safety hazard because the physical blockage of the exhaust flow creates massive engine backpressure, risking sudden engine stalling, unprompted deceleration, and power loss at highway speeds, which increases the risk of a crash. Furthermore, the blocked exhaust gases generate extreme temperatures under the hood, presenting a distinct vehicle fire hazard. I have proactively maintained this vehicle and had all previous safety campaigns addressed, including a complete engine replacement and the required engine control software updates. Despite these recalls being fully completed, the vehicle has still suffered this severe exhaust system failure. The Check Engine light was on, and diagnostic scanning shows fault code P2096. A professional dealer assessment confirmed a "collapsing manifold catalytic converter," "contamination of honeycomb on front of rear catalytic converter," and severe "contamination on the O2 sensor." An oxygen sensor replaced in December 2025 has already been destroyed by the upstream ceramic debris. Abrasive ceramic dust from the melting manifold structure is actively being drawn back into the engine cylinders, threatening to destroy the newly replaced engine. This failure mirrors the exact physical mechanics and safety risks outlined in Kia's previous safety campaign SC176 (the federal safety agency Campaign 19V‑120). Despite experiencing the identical defect and safety threat on a fully updated vehicle, my VIN was excluded from that specific campaign, and Kia corporate has flatly denied goodwill assistance. I am filing this complaint because this known safety defect poses an active threat to vehicle control and occupant safety. I've attached the current repair assessment, and can provide the assessment of the previous replacement of the O2 sensor when warranted.

Filed Jun 15, 2026 · Body, Brakes · PA · fire

2015 Kia Sorento fire on the 7th I was drive lost brakes and steering and as soon as I stop to get out to check the whole truck went up in flames

Filed Jun 1, 2026 · Engine · PA

While driving on interstate 380 south,with cruise on ,my engine failed with loud knocikng, Ihad two tractor trailors behind me ,i was lucky to get off road onto side of shoulder this was on May 5,2026. this was the second 2.4 liter theta 2 motor in my sorento, first motor failed at 58.000 miles, second motor failed at 138,000miles. auto was taken to kia dealership in Blakely ,Pa. a NEW MOTER HAS BEEN INST.ALLED UNDER WAURENTEE.MY ENGINE HAS THE KNOICK SENSOR AND SOFTWARE INSTALLED

Filed May 18, 2026 · Engine · WA

I am filing a safety complaint regarding a 2015 Kia Sorento equipped with the 2.4L Theta II engine. The vehicle developed progressive engine knock, reduced power, and check engine warnings while driving. Diagnostic trouble codes include P0017, P0014, and P0340 relating to crankshaft/camshaft timing correlation and camshaft position faults. A Kia dealership performed diagnostic testing using Kia diagnostic equipment (KDS) and documented abnormal knock activity across all cylinders. The dealer repair order specifically states: * “Found data PIDs for additional knock noise” * “All registering knock on all cylinders” * “Recommend replacement of engine sub assy based on knock detection” The vehicle experiences engine knocking and loss of power that create concern for sudden engine failure or stalling while driving, which could increase crash risk. This complaint is being submitted because the symptoms appear consistent with the known Theta II engine defect involving connecting rod bearing failure, engine knock, seizure, and potential engine failure.

Filed Apr 27, 2026 · Engine · 94,000 miles · ID

The contact owns a 2015 Kia Sorento. The contact stated that while driving at undisclosed speeds, the vehicle hesitated to maintain automotive power. No warning lights were illuminated. The vehicle was taken to a local dealer, where it was diagnosed; however, the diagnostic result was not available. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 94,000.

Questions about the 2015 Kia Sorento engine

Does the 2015 Kia Sorento have engine problems?

Owners have filed 367 complaints about the engine of the 2015 Kia Sorento, 49% of all its complaints, more than any other problem.

At what mileage do 2015 Kia Sorento engine problems start?

The typical (median) mileage in owner complaints is 87,780 miles.

Was there a recall on the 2015 Kia Sorento engine?

Yes, 1 recall: 18V907000. Check your VIN to see if your car still needs the free repair.

What year does the Kia Sorento have bad engine?

The Kia Sorento model years with the most engine complaints are 2016 (722 complaints), 2013 (516 complaints) and 2012 (475 complaints).

Other 2015 Kia Sorento problems

Body 100Lights 91Electrical 58Transmission 42Brakes 37Steering 33Fuel system 31Airbags 30Acceleration 22Driver assistance 11Visibility 11Seats 6Suspension 4Tires 4Seat belts 3Wheels 3

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