NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
360 reportsClear category filterMileage unknown · Oct 15, 2024
Engine
What component or system failed or malfunctioned? The engine began leaking hot air bubbles into the cooling system, causing hot coolant to leak into the harness and parts of the car. Is it available for inspection upon request? No, the manufacturer has responded that it does not cover the warranty because it is in another coun…
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What component or system failed or malfunctioned? The engine began leaking hot air bubbles into the cooling system, causing hot coolant to leak into the harness and parts of the car. Is it available for inspection upon request? No, the manufacturer has responded that it does not cover the warranty because it is in another country, although the brand is present there. How was your safety or the safety of others put at risk? When heating the system there is a risk of burst hoses or catastrophic damage to the systems when driving and therefore risk of explosion or fire. Has the problem been reproduced or confirmed by an independent dealer or service center? Yes, through an independent service center in the country where the vehicle is currently located. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Mechanical technicians state that it is a factory defect. Were there warning lights, messages or other symptoms of the problem before the failure and when did they first appear? No warnings, just hot coolant splashing onto the engine. Kia Sorento is a family vehicle, which we could not enjoy due to engine failures. Considering the timely maintenance, the brand must respond for the risk we ran by driving a vehicle with a catastrophic engine failure.
NHTSA ODI #11619767
Mileage unknown · Aug 26, 2024
Engine
In 2020, we started noticing the smell of engine coolant and the continuous running of the engine fan after shutting the engine off. The temperature gage never indicated any issue. We took the vehicle to the dealer to address the issue. Upon inspecting the vehicle, it was determined that there was a failure of one of the engine …
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In 2020, we started noticing the smell of engine coolant and the continuous running of the engine fan after shutting the engine off. The temperature gage never indicated any issue. We took the vehicle to the dealer to address the issue. Upon inspecting the vehicle, it was determined that there was a failure of one of the engine block bolts, which cause the coolant to seep in to the engine block. The dealer stated the engine needed to be rebuilt, because the bock was not salvageable. We then contacted Kia to question the failure and were told that the repair was not covered, because of the milage on the vehicle. In 2024 we received a recall notice, which stated they were now taking responsibility for the repairs and all we needed to do was submit documents showing the repairs were made. We did so, two months ago, however after submitting the documents Kia has not given us a reimbursement or provided updates on the status of our claim.
NHTSA ODI #11611026
Mileage unknown · Aug 22, 2024
Engine
With regular maintenance, at 138,000 miles my engine has a crack in the block and an inner oil leak that hadn't been previously detected during oil changes, which may have been a result of the check engine light that read camshaft issues just before it happened. All the other recalls and problems these kia engines have had I'm …
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With regular maintenance, at 138,000 miles my engine has a crack in the block and an inner oil leak that hadn't been previously detected during oil changes, which may have been a result of the check engine light that read camshaft issues just before it happened. All the other recalls and problems these kia engines have had I'm sure I'm not the only one with this issue.
NHTSA ODI #11610117
Mileage unknown · Jul 26, 2024
Engine
The engine cut off while driving. The mechanic said the motor seized and needs $8k in repairs. Kia said I missed a software update that is needed in order to be eligible for an extended warranty and they denied the repairs. I never received notice that a software update was needed.
NHTSA ODI #11604719
106,000 miles · Jun 20, 2024
EngineSteering
The contact owns a 2015 Kia Sorento. The contact stated while driving approximately 55 MPH, the brakes locked up, the steering seized, and the vehicle stalled. The contact stated that there were several unknown warning lights illuminated. The contact was barely able to pull off the highway. The contact was not able to restart th…
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The contact owns a 2015 Kia Sorento. The contact stated while driving approximately 55 MPH, the brakes locked up, the steering seized, and the vehicle stalled. The contact stated that there were several unknown warning lights illuminated. The contact was barely able to pull off the highway. The contact was not able to restart the vehicle. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the engine had seized and needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 106,000.
NHTSA ODI #11595444
Mileage unknown · Jun 18, 2024
Engine
I previously reported an engine complained submitted on 9/14/2023, ID 11544548. My engine started knocking while I was driving on a major highway without any warning lights or indications. a claim to Kia was made as I was told by the Kia dealership I would need engine replacement however Kia offered no explanation as to why the…
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I previously reported an engine complained submitted on 9/14/2023, ID 11544548. My engine started knocking while I was driving on a major highway without any warning lights or indications. a claim to Kia was made as I was told by the Kia dealership I would need engine replacement however Kia offered no explanation as to why the engine failed nor any explanation or seemed to care one bit that I was on a major highway and this occurred without any warnings whatsoever. I understand there is current recall for some v4 engines of the sorento model I had and I firmly believe the 3.3L v6 engines should be investigated.
NHTSA ODI #11595187
Mileage unknown · Jun 18, 2024
Electrical SystemEngine
The engine started to sound weird and stopped in the middle of the road that couldve created an accident should there have been other vehicle iw as pregnant at that time We contacted kia and they wouldnt change the engine since we didnt replace the knock sensor but we never received the mail and they confirmed thag mail was not…
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The engine started to sound weird and stopped in the middle of the road that couldve created an accident should there have been other vehicle iw as pregnant at that time We contacted kia and they wouldnt change the engine since we didnt replace the knock sensor but we never received the mail and they confirmed thag mail was not sent to us.
NHTSA ODI #11595173
Mileage unknown · Jun 17, 2024
Engine
There is oil leaking into my coolant. I had it flushed, hoping it was just a fluke. Then noticed there was more oil getting into my coolant. I had the vehicle inspected again and they stated it was probably a blown head gasket, or a cracked head.
NHTSA ODI #11594733
Mileage unknown · Jun 13, 2024
Engine
Ongoing issue with coolant mixing in the oil causing overheating in the engine. I believe this a safety risk as driving the vehicle for longer than 30 minutes causes the engine temperature to rise dramatically and risks complete engine failure, potentially when driving at speed. Vehicle has not been examined by a dealer. We've …
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Ongoing issue with coolant mixing in the oil causing overheating in the engine. I believe this a safety risk as driving the vehicle for longer than 30 minutes causes the engine temperature to rise dramatically and risks complete engine failure, potentially when driving at speed. Vehicle has not been examined by a dealer. We've just become aware this is apparently due to Kia's known soft block issue.
NHTSA ODI #11594171
Mileage unknown · May 31, 2024
Electrical SystemEngineSteering
My car has been giving me problems for about three months now and we’ve changed about four or five parts on the engine/transmission and it’s still acting up. We’ve called the Kia dealership several times to alleviate the problem but they are giving us the runaround about the three recalls that pulled up for the 2015 Kia Sorrento…
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My car has been giving me problems for about three months now and we’ve changed about four or five parts on the engine/transmission and it’s still acting up. We’ve called the Kia dealership several times to alleviate the problem but they are giving us the runaround about the three recalls that pulled up for the 2015 Kia Sorrento and they saying that we have to pay $150 for diagnostic per recall, which I don’t understand that if it’s not our fault then they should cover the diagnostic and the recall. We’ve contacted them on several occasions about the situation with my brake lights being on after I turn my car off and they stay on until my battery is almost dead. They don’t want to fix the HECU I believe the electric short that Kia have been experiencing. This car is the worst car I’ve ever had. I’ve never had to experience anything close to what I’m experiencing with Kia. They are an absolute disgrace it’s almost like they’re trying to pocket diagnostic money for themselves because there’s no way I have to pay almost $500 for three recalls, that’s no fault of our own. If I had the money to get another car, I would. They told us that we can trade it in if we come with a higher down payment, but I’m not able to do that right now so I’m just trying to get my car fixed until I’m able to do so. Please help us get our car fixed and the recalls serviced because Andrew at Kia Country of Savannah sounds like he’s irritated because we’re trying to get down to the bottom of them getting the recalls done. It’s like he’s just telling us anything to try to avoid doing the recalls. They also stated that when the car was dropped off, they didn’t find anything pertaining to the recalls whether y’all find anything or not you know that there are recalls for that particular car just fix it. Please help. We are not gonna stop until the car is fixed. I’m gonna keep reaching out. I’m gonna keep calling up there to see when it can be done because it’s costing us money that we don’t have.
NHTSA ODI #11591798
NHTSA investigations
4AQ23002 · Hyundai And Kia Abs Module Fires
Opened Nov 17, 2023 · No close date supplied
Status: open (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured by the equipment supplier Mando. The Part 573 Recall Reports contain varying defect descriptions and differing remedy descriptions for the same or similar equipment supplied by Mando. Safety recalls included in this Audit Query (AQ) review include: Hyundai recalls 20V-520, 20V-543, 21V-161, 21V-160, 21V-303, 22V-056, 22V-810, and 23V-651. Kia recalls 16V-815, 20V-518, 20V-519, 21V-137, 21V-331, 22V-051, 22V-800, and 23V-652 The purpose of this AQ is to evaluate the timeliness and scoping of Hyundai and Kia’s defect decision making and adherence with reporting requirements; and understand the varying defect descriptions and remedies between these recalls.
DP22003 · Loss Of Motive Power
Opened Sep 12, 2022 · Closed Dec 12, 2023
Status: closed (inferred from source dates) · Engine
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.
DP21002 · Engine Oil Pressure Switch Leak
Opened Nov 12, 2021 · Closed Jun 26, 2023
Status: closed (inferred from source dates) · Engine; Engine And Engine Cooling:engine:oil/lubrication:pressure/temperature Sensor
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
Additional source detail variants (2)
Engine And Engine Cooling:engine:oil/lubrication:pressure/temperature Sensor
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
Engine
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
DP21003 · Throttle Control System Vulnerabilities
Opened Nov 12, 2021 · Closed Jun 20, 2023
Status: closed (inferred from source dates) · Vehicle Speed Control:throttle
The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003. Accordingly, Model Year (MY) 2005-2016 Kia Optima/K5, MY 2006-2015 Kia Sorento, MY 2007-2016 Hyundai Elantra, MY 2007-2016 Hyundai Santa Fe, MY 2006-2015 Hyundai Sonatas are all part of the subject population. The petition was originally filed as a Vehicle Owner Questionnaire that can be reviewed at NHTSA.gov under reference (ODI) number 11439675.On November 12, 2021, ODI opened Defect Petition DP21-003 to evaluate the petitioner?s request. ODI performed trend analyses of the VOQs related to vehicle speed control issues for all the subject vehicles and found that none of the 52 Model/Model Year Hyundai/Kia vehicles demonstrated any actionable trend that warranted an investigation.Petitioners submitted 1119 VOQs and non-VOQ cases in which sudden uncommanded acceleration (SUA) or loss of motive power (LOMP) incidents were alleged.For the 1119 reports, 220 were incidents involving crashes, from which 69 subject Hyundai-Kia vehicles were inspected by Hyundai/Kia dealer technicians, Hyundai/Kia engineers, and/or third-party representatives.ODI found the inspections identified no vehicle defects related to the ETC system.Of the 220 crash-involved reports, 13 Event Data Recorder (EDR) records were downloaded successfully and 11 of those indicated driver error: (i.e.) pedal misapplication.A condition where the accelerator pedal is mistakenly applied instead of the brake pedal when the driver wants to stop the vehicle.In addition, ODI reviewed a scientific journal paper published in Forensic Science International in 2016 by Mr. Park et al ., as well as related test videos. ODI does not believe there is any evidence of uncontrollable SUA occurrences in any of the tests reviewed. NHTSA's Office of Vehicle Safety Compliance (OVSC) reviewed the allegations regarding the potential noncompliance with Federal Motor Vehicle Safety Standard No. 124.Based on the information provided, the Agency concludes there is insufficient information for us to determine if a possible non-compliance exists.Finally, both Hyundai and Kia informed ODI that all their vehicles manufactured after 2012 were equipped with an ETC management system, in which the engine speed will go to idle when the system sees signals from both the brake pedal and accelerator pedal at the same time; this is commonly known as the brake-throttle override system.After thoroughly assessing the material submitted by the petitioner, information already in NHTSA's possession, information submitted by Hyundai and Kia in response to an Information Request letter, and the potential risks to safety implicated by the petitioner's allegation, NHTSA does not believe that a formal investigation is warranted. After full consideration of appropriate factors, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA?s reasons for denial of the petition will be published.