2017 Hyundai Elantra vs 2019 Volkswagen Jetta

The official record identifies a condition that deserves candidate-specific inspection and record verification.

“Loss of Motive Power 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.”

The official record identifies a condition that deserves candidate-specific inspection and record verification.

“Vehicle Stalling - Manual Transmission The Office of Defects Investigation (ODI) has completed its review of a defect petition received on 14 August 2019 requesting an investigation of an alleged defect of the manual transmissions in Model Year (MY) 2019 Volkswagen (VW) GTI, Golf GTI and Jetta GLI vehicles. The stalling incidents cited occurred without warning as the vehicle slows to a stop or prepares to make a turn across traffic with the clutch pressed in and the vehicle in neutral.The hazard posed by a vehicle stalling event is manifested in the inability of the vehicle to move with the flow of surrounding traffic. Two factors have a major impact on the potential hazard to the vehicle, its occupants and surrounding vehicles: the surrounding traffic speed and the subject vehicle's restart ability. In the case of the vehicles that are the subject of this petition, restart is immediate and the stalls occur when the vehicle is slowing to stop for a traffic signal, making a turn, or is completely stopped. These circumstances substantially reduce the risk of harm to the vehicle, its occupants and surrounding vehicles.As of March 2, 2020, out of the population of 11,333 subject vehicles, NHTSA has identified 214 consumer complaints in its database, with unique Vehicle Identification Numbers (VIN), citing engine stalling as vehicles are being brought to a stop and/or preparing to make a cross traffic turn. When combined with the warranty, field report and customer complaint data received from VW in response to the Information Request letter sent, NHTSA identified 413 unique VINs alleging low speed engine stalling.Volkswagen determined that the low speed / idle engine stall was the result of unwanted gases remaining in the cylinder caused by the intake valve camshaft not being in the correct position at idle. The intake camshaft is in an advanced position. This advanced position results in too much overlap with the position of the exhaust valve camshaft, allowing both the intake and exhaust valves to be open at the same time. The erroneous advanced position of the intake camshaft is a result of low oil pressure at idle and high oil temperatures, greater than or equal to 110?C/230?F combined with engine control algorithms in the Engine Control Module (ECM) that position the intake camshaft. Based on examination of returned engines, only engines manufactured at the Silao Mexico plant were affected due to a tolerance stack-up issue with the oil system of the engines.In December of 2019, VW initiated a Service Action (24FD) to remedy the stalling issue in the affected vehicles. The warranty for the affected vehicles was extended to December 31, 2025. The software in the Engine Control Module (ECM) will be updated with a new calibration value for the adaptation nodes of the regulation valve. This is a directed action with letters being sent to vehicle owners asking them to bring their vehicles to their dealership to have the software update installed in their vehicle. The letters were sent in December 2019.After thoroughly assessing the material submitted by the petitioner, information already in NHTSA's possession, information submitted by Volkswagen in response to an information request and the potential risks to safety implicated by the petitioner's allegation, NHTSA does not believe that the stalling condition as alleged by the petitioner indicates the likelihood of a safety related defect that would warrant a formal investigation, therefore the petition is denied. Further specifics can be found in the Federal Register Notice.ODI complaint ID Numbers are listed on the attached sheet.”