2017 Kia Sorento

On November 13, 2023, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE23-019) to investigate allegations of loss of motive power relating to head gasket and/or head bolt failure in Model Year (MY) 2016-2017 Kia Sorento vehicles equipped with the 3.3 L Lambda II engine. When the investigation was opened, ODI had received 13 Vehicle Owner Questionnaires (VOQs) related to reports of loss of motive power. In an information request letter dated November 30, 2023, ODI requested technical information and failure data relating to the alleged defect in the subject MY 2016-2017 Kia Sorento as well as several peer vehicle populations which share the 3.3 L engine. In its February 26, 2024, response to ODI’s information request, Kia provided 2022 customer complaints (including techline and field reports) and 1738 warranty claims representing 2411 unique vehicles within the subject vehicle population. Of the customer complaints provided by Kia, they identified only 53 unique allegations of a loss of motive power resulting from the alleged defect. Kia determined that the remaining reports were minor vehicle drivability or engine performance issues. ODI reviewed the information provided by Kia, along with additional VOQs submitted to NHTSA following the opening of the investigation. When eliminating duplicative reports across the data sources, the total number of allegations of loss of motive power relating to the alleged defect in the subject vehicles is 77, representing an incident report rate of 59 per 100,000 vehicles. The MY 2016 Kia Sorento exhibited both the highest overall complaint rate and loss of motive power report rate across all subject and peer vehicle populations, representing an incident report rate of 102 per 100,000 vehicles. Across all data sources, there are no allegations of crashes or fires relating to the alleged defect. The one injury incident reflected in the failure summary table above is related to a consumer who was reportedly burned (minor burn requiring medical attention) while attempting to remove the coolant reservoir cap following a loss of motive power event. In their response to ODI, Kia described that if the threads of a head bolt hole in the subject engine becomes damaged, the clamping force between the cylinder head and engine block can decrease in the area of the affected head bolt. Kia’s assessment of the alleged defect is that when the failure occurs, drivers are provided with numerous warning signs prior to a potential loss of motive power event. According to Kia, potential warning signs associated with this failure include coolant leak/consumption or noticeable coolant odor, engine oil leak/consumption, engine temperature gauge rising to “H” (hot), check engine light illuminating, engine cooling fan remaining on following the engine being shut off, HVAC system not functioning properly, unusual engine noise, difficulty starting the vehicle, and smoke/condensation emitting from the engine compartment or exhaust. Through both its review of the information provided by Kia and outreach to consumers, ODI confirmed that there is reasonable detectability present in the vast majority of occurrences of the alleged defect. To mitigate the alleged defect, Kia increased the engagement depth of the head bolt threads for all subject engines, beginning in May 2017. ODI’s analysis of the failure data demonstrates that this corrective action correlates with a much lower incident report rate for engines produced following the change (8 per 100,000 vehicles for the MY 2018-2020 Kia Sorento). In December 2023, Kia launched extended warranty campaign WTY035 covering failures associated with the alleged defect in the subject vehicle population through 15 years or 180,000 miles, whichever comes first. Through its investigation, ODI identified the following peer vehicle populations, which were produced prior to the corrective action and exhibit failure rates comparable to the subject vehicles: MY 2014-2015 Kia Sorento, MY 2015-2016 Kia Sedona, and MY 2014-2017 Kia Cadenza equipped with the 3.3 L engine. Through discussions with ODI during the investigation, Kia decided to launch extended warranty campaign WTY039 in May 2024, which covers these peer vehicle populations through 15 years or 180,000 miles, whichever comes first. Based on analysis of the failure data indicating a low incident report rate of loss of motive power for the alleged defect, and in consideration of the warning signs which frequently occur from head gasket and/or head bolt failure in the subject engines, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

The National Highway Traffic Safety Administration (NHTSA) 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 NHTSA.gov 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 NHTSA 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 NHTSA's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, NHTSA does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA’s reasons for denial of the petition will be published. The reference numbers for the complaints to NHTSA 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 NHTSA.gov.

In a letter dated September 30, 2021, Mr. Gerald James (the petitioner) requested that NHTSA 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 NHTSA?s Vehicle Owner Questionnaire (VOQ) database. NHTSA reviewed the material cited by the petitioner, information submitted by Kia, NHTSA?s testing, and other pertinent information in NHTSA 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, NHTSA 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, NHTSA 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 NHTSA's possession, testing performed by VRTC, technical information provided by Kia, the potential risks to safety implicated by the petitioner's allegation, NHTSA 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 NHTSA?s reasons for denial of the petition will be publi

Yesterday our car was making a knocking noise. It lost power temporarily. Upon pressing the gas pedal to the floor we were able to get up to 30 mph. We made it to a repair shop. They looked at it today. The Dip stick showed no oil. The did an oil change and it was down 3 quarts of oil. We just had the oil changed 3 months ago on June 20. No check engine light came on. No warning at all . We were driving on a road with no shoulder, so this was dangerous if the engine were to fail before we got to repair shop. They said we need a new engine and it will cost just under $10,000. It seems that many people are having this exact same problem.

NHTSA ID

11766758

Incident

Sep 23, 2026

Issue 1: The front passenger airbag sensor is faulty. The ODS light is staying on. I took my car to a Kia dealership and they informed me that the passenger airbag would most likely not deploy in the event of an accident due to the faulty sensor. Kia has had this exact issue with other models and they issued a recall for those other models. This is a huge safety issue. Kia said it would cost me $3000 to fix the issue. Issue 2: My car is painted with the Snow White Pearl color. The paint is peeling and delaminating. This is a widespread defect with this paint color. Kia has not yet issued an extended warranty over this issue even though Hyundai (their sister company)i did extend the warranty for vehicles with this exact issue.

NHTSA ID

11765189

Incident

Mar 1, 2026

The contact owns a 2017 Kia Sorento. The contact stated that the vehicle had started independently. While the vehicle was in the driveway, the contact became aware that the vehicle had been running for a while. While driving at 45 MPH, the vehicle shut off but restarted independently. While driving 35 MPH, the vehicle stalled. The failure had occurred on several occasions. The vehicle was towed by AAA to the local dealer, where it was determined that the ignition switch was melted. The vehicle failed to turn off as needed. The dealer stated that the failure was a fire hazard. The contact was informed that the wiring harness and the pigtail starter button needed to be replaced. The dealer ordered the part. The failure mileage was approximately 149,000.

NHTSA ID

11764746

Incident

Sep 3, 2026

Mileage

149,000 mi

In early July, my vehicle's check engine light turned on. I took it to a reputable local mechanic in Sachse, Texas, who had the vehicle for approximately two weeks. He was unable to determine the cause of the issue but informed me that there was an existing recall and that the dealership should be able to address the problem at no cost to me. I then took the vehicle to the Kia dealership. The dealership informed me that there was an extended warranty for the engine and that if their diagnosis determined that the issue was covered under the warranty extension, they would repair it. This is what they texted me: Tech performed Compression test 1 .205psi, 2. 220psi, 3. 260psi, 4. 255psi all cylinders have excessive reading for dry compression test. Tech performed leak down test on all cylinders 1. 21% leak down coming from exhaust side, 2.61% leak down coming from exhaust side, 3. 10% normal, 4. 10% normal. Air leakage from exhaust system defective exhaust valves. Tech performed Cooling system pressure test for 20 minutes with no pressure loss. Ruling out head gasket. Tech evaluated Intake/Exhaust CVVT current and setpoints. Tech determined timing is jumping from back pressure of Clogged Catalyst Converter. Recommending replacing engine due to mileage and exhaust manifold. The dealership's recommended solution was to replace the entire engine. Currently, there is a recall concerning 2017 Kia Sorentos involving engine crankshaft issues. See NHTSA Recall No. 17V586000. I contacted the manufacturer, and they stated that they do not believe my vehicle is covered by the recall. However, I believe the issues identified with my vehicle may be related to the same underlying engine problems addressed by the recall, and I am concerned that the manufacturer is denying coverage rather than properly addressing the issue under the applicable recall or warranty. My engine is experiencing issues that appear similar to those described in the current NHTSA.

NHTSA ID

11762293

Incident

Jul 7, 2026

The contact owns a 2017 Kia Sorento. The contact stated that the vehicle experienced excessive oil consumption. The vehicle was inspected several times; however, no oil leaks were found. The contact stated that while driving 30 MPH, the vehicle shuddered, and the check engine warning light illuminated and flashed on the instrument panel. The vehicle was taken to an independent mechanic, where it was determined that there was a hole in a valve and a piston was fractured. The vehicle was then towed to a dealer, where the failure was confirmed. The dealer determined that the engine needed to be replaced and the repair was not covered under warranty. The vehicle was not repaired due to the cost. The contact notified the manufacturer via telephone and was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 100,000.

NHTSA ID

11761315

Incident

Mar 1, 2025

Mileage

100,000 mi

Vehicle steers with more resistance to the left but very loose and easy to the right. Dealership diagnosed that a new steering column is required. Kia also issued a new vehicle limited warranty extension on the motor driven power steering. I believe the warranty extension should apply; however, dealer says it does not apply. The warning light required for the extended warrant is not on in my vehicle but there is a clearly diagnosed issue with the electronic steering as indicated in the repair quote.

NHTSA ID

11760571

Incident

Jul 7, 2026

I am writing to file a formal complaint against Kia America, Inc. regarding the mishandling of a warranty repair dispute for my 2017 Kia Sorento (VIN [XXX]). This complaint documents a pattern of misinformation, unreturned communications, and unprofessional conduct by Kia representatives that has left my vehicle sitting at the dealership for over two weeks without resolution or accommodation. My vehicle was brought to Kia of Nutley for a confirmed MDPS (power steering) motor failure. The dealership quoted approximately $3,400–$3,500 out of pocket to repair it, as the vehicle is outside its standard warranty. I opened Kia Consumer Affairs Case #[XXX] on August 10, 2026 & have since attempted repeatedly to reach a resolution or goodwill consideration, given the age and history of the vehicle. The car has been at the dealership since August 6, 2026 without a loaner or rental accommodation. On August 10, 2026, I spoke with representative Liz, who told me she would send my case number to a supervisor to determine next steps. I have since learned that Liz apparently logged my vehicle's issue as a head gasket problem, rather than the actual power steering failure that is documented & confirmed by the dealership. I also spoke with representatives Kiyah (Total Kia Specialist) & Ivory (Customer Service, California), neither of whom was able to provide consistent or accurate information about my case status. I emailed Michele Cameron, Kia's Executive Director of Consumer Affairs &Warranty Operations, on August 10, 2026. As of this letter, I have received no responseAfter repeated hang-ups & my request for escalation, I received a callback today, August 19, 2026, from a Kia supervisor named Stephanie. Stephanie confirmed that there are two open recalls on my vehicle: Recall SC330, for the multi-function switch, & Recall SC340 (THETA), for a software upgrade. Stephanie stated that someone from the escalation team will reach back out to me within 1–2 Business days. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION AC

NHTSA ID

11759172

Incident

Aug 6, 2026

My kids and I were driving when my engine started making a loud noise. I pulled over and turned it off for a few minutes then I turned it back on. It worked for another mile or so then started making the noise again and died while I was driving at about 55-60 miles an hr. I was able to pull over, put it in park and turned the key off....it wouldn't turn back on and the check engine light came on. When I had someone check it out for me it was about 4 quarts low on oil (it never gave me a warning about the oil and the oil light never came on) and the check engine code was P0024. Oil was added and the camshaft position sensor has been replaced. It starts now but it won't stay on and when it is on it makes a loud screeching sound that isn't coming from the serpentine belt and a loud knocking sound.

NHTSA ID

11758822

Incident

Aug 8, 2026

TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: MULTIFUNCTION SWITCH REPAIR (WTY031) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information associated with the ‘Multifunction Switch Warranty Extension Program’ (WTY031) to repair the multifunction switch knob on 2016-2018MY Sorento (UMa) vehicles, produced at Kia Georgia from October 27, 2014 through March 7, 2018, which may exhibit an intermittent headlamp flickering. The vehicle’s warranty for this issue will be extended from 5 years/60,000 miles to 15 years/150,000 miles, whichever comes first, starting from the date the vehicle was first put into service.

TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to install a Theft Deterrent Ignition Cylinder Protector on certain 2010-2022MY Kia vehicles outlined on page 20, which may not have been equipped with an immobilizer and whose Integrated Body Control Unit (IBU) / Body Control Module (BCM) did receive the Anti-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.

VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS: ECM LOGIC IMPROVEMENT (SC340 REVISION 5) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2020MY Optima, 2016-2020MY Sorento, 2017-2022MY Sportage vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.

TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: OIL PRESSURE SWITCH (OPS) REPLACEMENT (WTY026 REVISION 2) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the replacement of the Oil Pressure Switch associated with the ‘Warranty Extension Program’ (WTY026) on some 2014-2018MY vehicles listed in the table below, for repairs that may be necessary to address an Oil Pressure Switch leak in the eligible vehicles listed below from 10 years/100,000 miles to 15 years/150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address the Oil Pressure Switch leaking condition at no cost to the customers during this extended warranty period.

TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSION SECM LOGIC IMPROVEMENT (SC340 REV 4) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2022MY vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.

TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to install a Theft Deterrent Ignition Cylinder Protector on certain 2010-2022MY Kia vehicles outlined on page 20, which may not have been equipped with an immobilizer and whole Integrated Body control Unit (IBU) / Body Control Module (BCM) did receive the Ant-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.