NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
360 reportsClear category filterMileage unknown · Aug 19, 2021
Engine
Bought the vehicle used, from dealership had little over 91,000 miles on vehicle when purchased and purchased extended warranty as well, only had 11months, at little over 109 thousand miles on vehicle noticed white exhaust coming from tail pipe, was having to put oil in the vehicle 1-2 quarts a week. At one time, during a week, …
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Bought the vehicle used, from dealership had little over 91,000 miles on vehicle when purchased and purchased extended warranty as well, only had 11months, at little over 109 thousand miles on vehicle noticed white exhaust coming from tail pipe, was having to put oil in the vehicle 1-2 quarts a week. At one time, during a week, vehicle seemed to be stalling/slow to accelerate, engine sounded different, when got home, checked oil, the dip stick showed barely any oil. Put oil in the vehicle. NO warning light ever has came on about low oil, no warning light about engine has come on. I called local Kia dealership about the issue. Took 2 weeks to get appointment to take my Sorento in to get looked at. Once in the Kia dealership, service department manager says they did an oil consumption test on the engine. Multiple points of the inspection show engine failure. Dealership has more in depth description of what all has failed with the engine and oil consumption. Also had to provide the copies of when and where the vehicle had its regular maintenance such as oil changes done so it could be sent to the Extended warranty to approve engine replacement. My vehicle has been sitting at the dealership since July 20,2021 with no working being done, not even the safety recalls, because I was told engine is on back order. At time writing this it is August 19, 2021, so my sorento has been just sitting at Kia dealership with nothing being done. I have called once a week to Kia dealership, as they have yet to call me for updates. I reached out to Kia customer hotline, they were able to pull up the info on vehicle, find out exactly what part/engine was needed from dealership and shows it back ordered because the engine is coming from Korea to US, No actual ETA on when it will actually be sent/shipped to US to then be sent to dealership to put in my vehicle. Was told it could be months..unacceptable! was never sent any information on possible oil consumption problems or engine problems.
NHTSA ODI #11429724
Mileage unknown · Aug 4, 2021
Engine
Hello. Prior to receiving the Recall letter around mid-July 2021, we had complained to the dealership about the engine humming after a ride and AC going on and off On July 17, I was scheduled to visit the dealership and take care of the Recall. Although, I was scheduled for an appointment, nothing happened! The dealership did n…
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Hello. Prior to receiving the Recall letter around mid-July 2021, we had complained to the dealership about the engine humming after a ride and AC going on and off On July 17, I was scheduled to visit the dealership and take care of the Recall. Although, I was scheduled for an appointment, nothing happened! The dealership did not have the component required for the recall. We then left and insisted to return the following day and requested that a diagnostic be conducted in addition to the recall on July 23. Following the diagnostic, the dealership told us we needed a new engine. It was a big surprise and a shock that a car which was serviced twice a year at this dealership, had 104, 000 miles and was only 5 years old, had a complete failure. The dealership provided a quote for the repairs and never mentioned the recall or how it could be related to the diagnostic they had just made. Upon consulting with my insurance company, USAA, their adjuster was able to establish that the mechanical failure my car was facing was closely related to the recall. Based on the assessment made by USAA on August 4, 2021, we now know the dealership knew that failure to receive the recall caused the mechanical failure. The quote the dealership presented me included and was consistent with damages reported in the Recall. why don't they contact KIA, which is clearly liable, and want me to pay for a new engine? I need help to unpack this issue that has strained my resources, time and brought stress to the family car. A major risk associated with this overheating is fire. In light of this new information, I have contacted the dealership to discuss August 8, 2021. I also contacted KIA USA on July 28 prior to establishing the connection between the recall and the mechanical engine. No response. I need help as school is reopening. We need the car to go the work. No help has been provided. Dealership is Southwest Kia#451/ Lithia 39650 LBJ, Freeway South, Dallas, TX 75237, tel: 469-772-7252
NHTSA ODI #11427768
83,000 miles · Aug 3, 2021
Engine
The contact owns a 2015 Kia Sorento. The contact stated while driving 30-35 mph, he heard an abnormal knocking sound coming from the engine before the vehicle inadvertently loss power. The check engine warning light was illuminated. The contact was able to restart the vehicle after several attempts and drove to his residence. Th…
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The contact owns a 2015 Kia Sorento. The contact stated while driving 30-35 mph, he heard an abnormal knocking sound coming from the engine before the vehicle inadvertently loss power. The check engine warning light was illuminated. The contact was able to restart the vehicle after several attempts and drove to his residence. The vehicle was towed to the dealer who diagnosed that the engine needed to be replaced due to rod bearing failure. The contact stated that the failure reoccurred while the vehicle was at the dealer. The manufacturer was made aware of the failure and advised the contact that they could not cover the repair of the vehicle as the service campaign for the failure had expired. The vehicle was not repaired. The approximate failure mileage was 83,000.
NHTSA ODI #11427650
Mileage unknown · Jul 26, 2021
EngineService BrakesSteeringCrashInjury
Motor shuts down completely disabling the car electronically. I lose my brakes and my steering. In February 2020, I almost died driving the vehicle the car engine seized while driving and was replaced by KIA. I never received an itemized bill from Dealership they stole the rental from my private driveway to and stole $5,000 and…
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Motor shuts down completely disabling the car electronically. I lose my brakes and my steering. In February 2020, I almost died driving the vehicle the car engine seized while driving and was replaced by KIA. I never received an itemized bill from Dealership they stole the rental from my private driveway to and stole $5,000 and my belongings from the vehicle. One June 29.2021 I almost died again driving the car. The New Engine shuts down and I lose breaks and steering and hit an animal trying to get off the road for safety since I no longer have breaks to my vehicle. The animal ripped off my undercarriage and dented my radiator. The car was smoking and the engine would start and when driven 50 feet keep shutting down and locking no breaks no power no steering becoming a hazard to myself and others. I have had no resolve with any dealership I have been to 4 different Kia dealerships and The Hyundai Certified Pre Owned Used Car Sales Dealer I purchased the car from. Instead of helping me and not placing my life and other lives in danger. I was threatened, antagonized, slandered, Defamed, and Had the police called to remove me because I refused to commit a crime and set my car on fire like the Dealership told me to do. I need help.
NHTSA ODI #11426547
Mileage unknown · Jul 26, 2021
Electrical SystemEngineFuel/propulsion System
Upon receiving Recall NOTICE , Vehicle Is A Fire Danger and I can Not Drive it.Living in the middle of the Forrest makes having this vehicle in this HIGH FIRE DANGER TOWN for 2 months put not only my family and home in danger but my entire FIRE VULNERABLE COMMUNITY AT RISK. The company headquarters or Dealership would not loan m…
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Upon receiving Recall NOTICE , Vehicle Is A Fire Danger and I can Not Drive it.Living in the middle of the Forrest makes having this vehicle in this HIGH FIRE DANGER TOWN for 2 months put not only my family and home in danger but my entire FIRE VULNERABLE COMMUNITY AT RISK. The company headquarters or Dealership would not loan me a safe car nor remove this FIRE HAZARD from this community.
NHTSA ODI #11426482
Mileage unknown · Jul 15, 2021
Engine
I was driving down the highway when the battery light came on and the engine died. I had the vehicle towed to Kia. The informed that the engine di not meet the recall requirements for replacement. The engines are obviously not well made and Kia needs to replace them when they fail. Thank you for your time.
NHTSA ODI #11424967
Mileage unknown · Jul 2, 2021
Engine
On May 10th 2021 the engine ceased on my 2015 Kia Sorento. The car was towed by AAA to Grand Prairie, Texas. Note, the cadillac converter was stolen at this location and Christian Brothers did replace it. They notified us that the engine needed to be replaced. I then had it towed on May 19, 2021 to my local mechanic at in Richar…
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On May 10th 2021 the engine ceased on my 2015 Kia Sorento. The car was towed by AAA to Grand Prairie, Texas. Note, the cadillac converter was stolen at this location and Christian Brothers did replace it. They notified us that the engine needed to be replaced. I then had it towed on May 19, 2021 to my local mechanic at in Richardson, Texas. I have used this mechanic for several years. It was confirmed that the engine needed to be replaced. I then had the car towed on May 20, 2021 to Kia in Plano, Texas. On May 27, 2021 Kia called me and said the motor needed to be replaced and they are contacting Kia to see how this will be taken care of. I did not receive a return call for several day and I was assuming the vehicle was being taken care of. On June 8, 2021 I called for an update. I received a return call from the Kia service man who then informed me that the computer engine was not updated in 2019 and Kia was not going to uphold their recall on the engine because of this. There is no notification given on the vehicle that this was coming due or even past due. Kia has now refused to replace the motor that is in a current recall due to the motor ceasing. On June 9, 2021 I contacted my finance company and insurance for advice. June 10, 2021 I called to talk to service department at 9:45am was told they would return my call. At 3:50 I called again since service mailbox is full and I can’t leave a message. I called again at 5:00pm and was told the service manager will call me June 11th Friday morning. I did not receive a call from her in the morning. I called at 1:10pm June 11, 2021. I was directed to two mailboxes that were full. I called a third time and was told they will have the service manager call me. Emely returned my call and said I need to talk to Kia Consumer Affairs. Consumer Affairs at Kia again said the letter was enough notification. I went to Kia on June 12, 2021 and they wanted me to trade it in.
NHTSA ODI #11423211
Mileage unknown · Jun 30, 2021
Electrical SystemEngine
On June 23rd my 2015 Kia Sorento with a 3.3 l engine V6 started making noises and I called a dealership and they asked if it sounded like knocking noises and I said no it sounded more like exhaust noise within an hour my car was losing power it was idling very rough and I took it into the dealership and they said that I need ed …
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On June 23rd my 2015 Kia Sorento with a 3.3 l engine V6 started making noises and I called a dealership and they asked if it sounded like knocking noises and I said no it sounded more like exhaust noise within an hour my car was losing power it was idling very rough and I took it into the dealership and they said that I need ed an entire new engine. However I had been in there on June 14th and they told me that my oil level was good and there were no leaks but on June 23rd suddenly I had 0 oil in my engine and they were claiming that it was my issue however it is The exact issue that Kia has had with this model and make but different engine. My car has 91000 miles on it I use full synthetic oil I had it changed 6000 miles ago it was fine then I have had the maintenance done on my car and there were 0 warning lights on my - for either oil or engine that is why I checked electrical I was told by the dealer that there Oil lights and engine lights often don't come on when they have a problem with the car. This is a huge safety issue and if it's starting to happen on the 3.3 engine this needs to be looked at immediately I know someone who owns the exact same year exact same engine and they have been dealing with this type of thing as well
NHTSA ODI #11422939
53,000 miles · Jun 29, 2021
Engine
The contact owns a 2015 Kia Sorento. The contact stated while driving 35 mph, there was an abnormal sound coming from the engine. The vehicle loss motive power without warning. The vehicle was towed to the dealer where the oil level was inspected. The contact was informed that there was too much oil in the engine. The vehicle wa…
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The contact owns a 2015 Kia Sorento. The contact stated while driving 35 mph, there was an abnormal sound coming from the engine. The vehicle loss motive power without warning. The vehicle was towed to the dealer where the oil level was inspected. The contact was informed that there was too much oil in the engine. The vehicle was then towed to Nucar Kia of Tilton (40 Tilton Rd lot a, Tilton, NH 03276) and diagnosed that the failure was related to a manufacturer's recall for the Occupant Detection System (ODS). The vehicle was not repaired and remained at the dealer. The contact stated that the manufacturer declined to provide the recall repair since the contact had not gotten the manufacturer's recall for the ODS software update. The contact stated that the manufacturer’s recall letter stated that if the air bags functioned properly, there was no need to contact a Kia dealer for the recall repair. The failure mileage was 53,000. Consumer stated knock sensor recall was not received although dealer states otherwise. Lawsuit states without knock sensor Kia is not responsible for warranty coverage.
NHTSA ODI #11422847
Mileage unknown · Jun 29, 2021
Engine
Low audible knocking in engine compartment that progressively became louder over the next 2 days. Engine stalled, flashing check engine light appeared. Vehicle is now un-drivable because of a P1326 code that is common in these Hyundai/Kia engines. Oil change was last done less than 2 months ago and an oil change plus facility. A…
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Low audible knocking in engine compartment that progressively became louder over the next 2 days. Engine stalled, flashing check engine light appeared. Vehicle is now un-drivable because of a P1326 code that is common in these Hyundai/Kia engines. Oil change was last done less than 2 months ago and an oil change plus facility. A campaign suggests this is a defect of the engine. There is a class action suite in favor of the owners of this and other vehicles with Hyundai/Kia engines.
NHTSA ODI #11422718
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.
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