2020 Hyundai Elantra

The vehicle entered limp mode. The Hyundai dealer diagnosed a camshaft problem, said the repair would be covered, ordered the part, and began the work. After the engine was opened, the dealer noted sludge/varnish and denied coverage, claiming lack of maintenance. This VIN is included in safety recall 21V301 for improperly heat-treated piston oil rings on the 2.0L Nu MPI engine. Hyundai told NHTSA that chipped rings can scuff the cylinder bore, cause accelerated oil consumption, knocking, oil-pressure warning, connecting-rod bearing seizure, stall, and in limited cases fire. The published remedy is inspection of the cylinder bore and piston skirt, engine replacement if damage is found, and PNSS software, at no charge. Hyundai National Consumer Affairs Case #XXX. I sent a written demand that they complete Campaign 203 and not convert an open safety recall into a customer-pay job. On XXX, case manager Mohammad issued a letter denying only “limited warranty” coverage for lack of Owner’s Manual maintenance. That letter does not state whether the Campaign 203 bore/skirt inspection was done, does not state whether PNSS was installed, and does not decide the incomplete recall. Oil and filter were changed on a regular schedule by the owner’s family using the specified oil. A signed affidavit was provided. Hyundai’s warranty does not require dealer-only oil changes. The symptom of the recalled oil-consumption defect (varnish/sludge) is being used to refuse the recall remedy. The vehicle remains unrepaired. I have not authorized customer-pay work or disposal of parts. What I want NHTSA to do Record this as an incomplete recall remedy. Require Hyundai Motor America to complete Campaign 203 on VIN [XXX]: perform the official bore and piston-skirt inspection, replace the engine if abnormalities exist, install PNSS, and cover related camshaft/engine damage found when the engine was opened, at no charge. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

2020 HYUNDAI [XXX], VIN: [XXX] Incident Description: On XXX I was pulling into a parking spot and had my foot firmly on the brake pedal. When I attempted to shift the vehicle into Park the engine suddenly revved up excessively. The vehicle then accelerated forward on its own and crashed into a building. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Hyundai Elantra. The contact stated that while driving 25 MPH, there was an abnormal rattling sound coming from the engine, with the check engine warning light illuminated. The contact pulled over to the side of the road. The vehicle was restarted but unexpectedly stalled. The vehicle was taken to an independent mechanic and was diagnosed with camshaft failure. The vehicle was towed to the dealer and was diagnosed with engine failure caused by a misfire. The contact was informed that the engine needed to be repaired. The vehicle was not repaired. The vehicle was taken to another independent mechanic and was diagnosed with camshaft failure. The manufacturer was not made aware of the failure. The approximate failure mileage was 46,691.

"I was not notified of Campaign 974 and later experienced engine problems/failure. I am requesting review of whether the campaign was completed and whether the failure is related to the condition the campaign was intended to detect. My engine failed while pulling up to a house, stopping, then preparing to move again the car stalled, car stalled, car would not start for several times tried, then started was able to drive for about 10 miles then stalled again and would not start, car has been intermittently working, car has recent and regular oil changes on time with correct oil and still failed now there is metal in the oil per the mechanics there is knocking sort of like ticking sounds - the car left me stranded due to the engine intermittently working and not working to start the car - the car will attempt to start then turn right off immediately after starting the car and sometimes not turn over the car also had been jumping when in stopped positions as soon as attempt to give gas ever so slightly

Currently, there are 30,564 miles on my vehicle and I am the original owner of the vehicle since early 2021. This is a continuous intermittent problem that can occur at any time when trying to accelerate the vehicle. The vehicle could be moving down the road and you go to accelerate and the RPM's drop dramatically, giving you no power. The same thing has happened when trying to accelerate from a stop. The vehicle would start to accelerate and then all of a sudden the RPM's drop, giving you no power. I have had the vehicle to the dealership for this problem and I am being told that they can't do anything about it because they can't duplicate it. If this happened when it was necessary for me to get out of the way of a vehicle, an accident could occur, resulting in sirius injury or death. Also, there were no warning lights or check engine light that came on at any time when the problem presented itself.

The contact owns a 2020 Hyundai Elantra. The contact stated that while driving, the vehicle unexpectedly stalled. The vehicle was able to restart. The check engine light illuminated. The vehicle was taken to an independent mechanic Camshaft sensor failure. The camshaft sensors were replaced; however, the issue persisted. The vehicle was then taken to the dealer where it was diagnosed with engine failure but the vehicle was not repaired. The manufacturer was notified of the issue. The contact associated the issue with NHTSA Campaign Number 21V301000 (Engine). The approximate failure mileage was 105,000.

This complaint documents a recurring automatic transmission failure resulting in three complete vehicle shutdowns during active operation — two at highway speed and one in an active turning lane. The most recent failure occurred within 15 minutes of the vehicle being released from an authorized Hyundai dealership in College Park, Maryland, whose general manager admitted in a recorded call that the vehicle was released knowing the transmission was unrepaired and unsafe. The first failure occurred in 2025 on a highway with no prior warning. The vehicle was towed to the dealership, where the transmission was confirmed defective and repaired under warranty. The second failure occurred in January 2026, again on a highway with no warning. The dealership held the vehicle from January through May 2026 — four months — with no updates despite multiple owner inquiries. In April 2026 the dealership confirmed the transmission had failed again and was seeking Hyundai corporate authorization for the warranty repair. On May 21, 2026 I was told the vehicle was ready and the transmission had been fully repaired under warranty. This was false. On [XXX], within 15 minutes of leaving the dealership, the transmission failed a third time, completely shutting the vehicle down in an active turning lane with no warning. The general manager at Hyundai College Park later admitted in a recorded call that the transmission was never repaired and the vehicle was released only to recover the dealership's rental car, with full knowledge it was unsafe. All three failures were confirmed by the authorized dealer. Component is available for inspection. NHTSA investigation and recall consideration requested. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Hyundai Elantra. The contact stated that while driving at an unknown speed and at a stop, the vehicle lunged forward. The RPM increased and decreased without applying the accelerator pedal. The check engine light was illuminated. A mobile mechanic reset the codes but was unable to determine the failure. The vehicle was taken to an independent mechanic who referred him to the local dealer. The local dealer was contacted, who stated there was a transmission pressure sensor issue. which prevents the service from being performed under Hyundai Service Campaign 863 T5B Bulletin: 20-01-028H. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 76,000.

My engine failed due to a known piston problem code P1327. The recall 203 was performed 7/1/22 which put in a sensor so the dealership said that Hyundai said they do not have to fix it because it is out of warranty at 141,000 miles and was manufactured in South Korea so they say it doesn't qualify for the extended warranty Recall 203 Dealer Best Practice Date: October 12, 2021 Subject: HMA Recall 203 – Nu 2.0L Atkinson Engine Inspection and Replacement - (TSB #21-01-054H-1) - Remedy Available v3 Updates To This Document Date • TSB# 21-01-054H-1 – The TSB supersedes TSB # 21-01-054H to revise the Parts and Warranty Information sections, specifically related to add engine and service kit part numbers and op codes for engine replacement. 10/12/21. My car is available for inspection. The sensor light came on on the highway when the engine was already out of oil which caused the failure. The car could have caught fire or stalled on the highway which is the safety issue. The vehicle was inspected by Tires Plus and got the P1327 code and also the Wallace Hyundai dealer in Ft. Pierce, FL which got same code.