2015 Hyundai Elantra

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.

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.

The vehicle experienced severe, sudden loss of power while driving, leaving the car unable to exceed approximately 40 MPH on public roads and highways. This restriction creates an immediate rear-end collision hazard and severely degrades acceleration under traffic conditions. Diagnostic & Technical History: The vehicle previously triggered Diagnostic Trouble Code (DTC) P1326 (Knock Sensor / Engine Limp Mode). Diagnostic testing at Holler Hyundai under Techline Case #2026040700281 confirmed severe internal mechanical compression failure in Cylinder 4. Cylinder 4 failed dry compression testing and required a wet compression test (oil added to the cylinder) to hold pressure at 151 PSI. Severe internal engine oil pass-through/blow-by from the damaged cylinder has clogged the catalytic converter with baked oil ash, creating extreme exhaust backpressure that physically restricts vehicle speed and throttle response. Holler Hyundai recently replaced the physical knock sensor to clear the active P1326 light, but the underlying internal mechanical engine damage and clogged exhaust remain unaddressed. Corporate & Warranty Refusal: Hyundai Motor America (Executive Corporate Case #43193886) has formally denied goodwill coverage and engine replacement. Corporate is refusing to address the internal mechanical failure without requiring out-of-pocket diagnostic procedures, despite documented cylinder failure and a severe ongoing highway safety hazard.

NHTSA ID

11766056

Incident

Apr 3, 2026

I am writing to formally report a serious vehicle safety concern involving a 2015 Hyundai Elantra, VIN [XXX], which is owned by my mother. The vehicle experienced a sudden loss of power steering assistance, creating an immediate and significant safety concern. This could have caused a series issue to myself and others on the road. Following the incident, I took the vehicle to a Hyundai dealership for inspection and diagnosis. The dealership advised that the vehicle’s VIN is not currently covered by a Hyundai recall for this issue. What is particularly concerning is that Hyundai has issued recalls involving power steering/electric power steering failures and related loss-of-steering-assistance concerns on various Hyundai models and model years. Given the nature of the failure and the similarities among reported power steering defects, I am concerned that this vehicle may be experiencing the same or a substantially similar safety-related defect, despite Hyundai currently stating that this particular VIN is not included in a recall. I respectfully ask NHTSA to: Review this incident and the underlying power steering failure associated with this 2015 Hyundai Elantra and determine whether the issue represents a broader safety defect. I understand that not every mechanical failure qualifies as a safety defect or recall. However, a sudden and unexpected loss of power steering assistance is fundamentally different from an ordinary wear-and-tear repair because it can affect the driver’s ability to safely control the vehicle. I am asking NHTSA to please review this matter as a potential safety defect. I would also appreciate confirmation that this complaint has been received and consideration of whether additional information, dealership documentation, diagnostic records, photographs, or repair estimates would assist with your investigation. Thank you for your attention to this matter and for your role in protecting the safety of motorists and the public. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION

NHTSA ID

11757270

Incident

Aug 7, 2026

Failed engine due to class action recall

NHTSA ID

11756134

Incident

Jun 17, 2026

I purchased the vehicle from a private party on 8/18/21 with 38,310 miles. Almost immediately after owning the vehicle I noticed the engine oil level was low.. The owner had said she had just got an oil change so I thought maybe the shop just left it low. Then I noticed it low again a month later, and that was the start of my nearly 5 year journey of having the carrying quarts of oil in the trunk of my car because the engine was burning the oil so quickly. Finally on 5/08/26 the car begins to run very poorly, long story short my personal mechanic and Hyundai of Ontario both confirm the engine is bad and needs to be replaced. I understand there is a history of this year of Hyundai engines burning excessive oil. The car currently has 92,362 miles and even though it’s under the 100,000 warranty Hyundai says the warranty is only offered to the original owner. Any help you can provide to determine if Hyundai has any liability related to this issue would be much appreciated.

NHTSA ID

11749911

Incident

May 8, 2026

The engine failed on a 2015 Hyundai Elantra with approximately 71,000 miles. The vehicle has an open, unresolved safety recall (Recall 251, NHTSA #23V651000) for an ABS module brake fluid leak that Hyundai has acknowledged but has not provided a remedy for. The vehicle is currently at an independent repair facility and is available for inspection upon request. The vehicle repeatedly shut off without warning while in motion and restarted mid-drive, causing sudden loss of power steering and power brakes while driving. This occurred on multiple occasions and was documented by an independent service center in February 2026. This presents a serious risk of accident, injury, or death to the driver and others on the road. The check engine light was illuminated. The vehicle experienced recurring brake issues requiring multiple repairs over several years, including brake replacement before 2026 and rear rotor, brake pad, and brake line repairs in February 2026. These brake symptoms are consistent with the known ABS module defect covered under open Recall 251. The engine shutoff symptom was first documented in February 2026 and continued until engine failure in May 2026.

NHTSA ID

11739608

Incident

May 15, 2026

Odometer Fraud. The contact purchased a 2015 Hyundai Elantra. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was approximately 182,204 - 215,000; and at the time of registration, it was discovered that the mileage was 152,572.

NHTSA ID

11732469

Incident

Apr 20, 2026

Mileage

152,572 mi

I am submitting a vehicle safety complaint regarding a vehicle purchased on March 5, 2026. Within days of purchase, the vehicle exhibited multiple safety-related issues despite reportedly passing a Virginia safety inspection on February 27, 2026. The safety concerns identified include: - Driver-side headlight partially inoperable, which resulted in a traffic stop on March 15, 2026 - Front hood not properly secured/latching, creating a risk of opening while driving - No engine oil present upon inspection shortly after purchase - Coolant reservoir completely empty - Check engine light illuminated shortly after purchase Diagnostic testing following the check engine light revealed code P0420 (Catalyst System Efficiency Below Threshold). A mechanic advised that this condition is not a new issue and would have developed over time, indicating that it likely existed prior to the sale of the vehicle. At the time of purchase, the vehicle had an outstanding manufacturer safety recall identified as NHTSA Recall No. 23V651000 (Recall #251), dated April 3, 2024. This recall had not been completed prior to sale and was only addressed on March 24, 2026, after I took the vehicle to a Hyundai dealership. Additionally, the vehicle was subject to a manufacturer campaign identified as Campaign #P33, dated December 15, 2025. This further indicates that the vehicle required manufacturer-related service that had not been fully addressed prior to sale. An independent inspection conducted on March 16, 2026 confirmed conditions inconsistent with a vehicle that had recently passed a safety inspection. These issues raise serious concerns about the safety, inspection integrity, and roadworthiness of the vehicle at the time it was sold. I am requesting that this matter be reviewed for potential safety-related concerns and any related violations. I am available to provide supporting documentation, including inspection reports, diagnostic results, service records, and photographic evidence.

NHTSA ID

11731101

Incident

Mar 15, 2026

The contact owns a 2015 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power several times, with the check engine warning light and low oil warning lights blinking. The vehicle was able to restart; however, the failure persisted. There was an abnormal tapping sound coming from the vehicle. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 160,000.

NHTSA ID

11730460

Incident

Apr 10, 2026

Mileage

160,000 mi

Certain vehicles may exhibit excessive paint peeling or bubbling of the primer/paint film on the exterior metal body panels: hood, fender(s), roof, door(s), quarter panel(s), and tailgate/trunk. This warranty extension only applies to factory-applied paint and does not cover collision-related paint repairs or vehicles with a salvaged title. Hyundai is extending the warranty coverage for certain white paint colors under these conditions from 3 years and 36,000 miles, to 10 years with unlimited miles from the date of original retail delivery or date of first use, and is valid for original and subsequent owners.

Some Hyundai vehicles with exterior white paint may exhibit peeling or bubbling on metal body panels: hood, fender(s), roof, door(s), quarter panel(s), and tailgate/trunk. The paint warranty coverage for affected vehicles has been extended to 10 years/unlimited miles from the date of original retail delivery or date of first use and is valid for original and subsequent owners.

Certain Hyundai vehicles with exterior white paint may exhibit peeling or bubbling on metal body panels: hood, fender(s), roof, door(s), quarter panel(s), and tailgate/trunk. The paint warranty coverage for affected vehicles has been extended to 10 years/unlimited miles from the date of original retail delivery or date of first use and is valid for original and subsequent owners. The warranty extension does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer or has a branded or similar title under any state’s law.

The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may rupture during deployment, and have caused serious injuries and fatalities. Please see attached announcement, provided by NHTSA, for more details.

The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and underwent airbag replacement using non-genuine parts. These dangerous inflators have ruptured during deployment, posing a serious risk of injury or death due to metal fragments entering the vehicle cabin. To date, Hyundai is aware of three people who have died while driving a Hyundai vehicle with one of these substandard replacement airbag inflators that deployed in what likely would have been a survivable crash. NHTSA has issued a public advisory urging vehicle owners and service professionals to have vehicles inspected if there is reason to believe that a non-genuine replacement airbag may have been installed. Vehicles with salvage or rebuilt titles, prior airbag deployments, or unknown repair histories may present a higher risk. NHTSA strongly cautions against self-inspection by vehicle owners and recommends inspection by trained technicians.

This TSB references the Op codes to use for claim submission and the Parts required based on the vehicle’s inspection results from TSB 22-01-023H (DTC P1326 – Engine Bearing Inspection/Engine Replacement) or the latest version.