2020 Hyundai Elantra Engine

Engine is stalling and consuming oil at a higher then normal rate. Knock sensor is having issues at 24k miles both part of recall campaign 974 and recall 203. Took the auto to dealer for service and was told Hyundai would not honor the recall due to a branded title which now puts me in a scenario of possibly engine stall in the middle of highway traffic.

The contact owns a 2020 Hyundai Elantra. The contact received notification of NHTSA Campaign Number: 21V301000 (ENGINE). While driving at an undisclosed speed, the check engine warning light illuminated, and the vehicle was pulled over to the side of the road. The vehicle was towed to the residence. The contact then towed the vehicle to the dealer, where it was diagnosed with piston oil rings failure, and it was determined that the engine needed to be replaced. The dealer informed the contact that the manufacturer had refused to honor the recall repair. The vehicle remained at the dealer unrepaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

My car just lost all power and stopped on the side of the road after making a weird noise under the hood

This vehicle’s engine failed on 10/25/21. This was 2 months after it was purchased. When we tried to have a Hyundai dealership diagnose the car, they said it would be an extended amount of time before the could look at it. When they finally did, they said it was not eligible for the warranty or recall relief. I reached out to the Hyundai corporate office and received no assistance. They tried to say it was due to no drain plug. It was recommended that we take it to another dealership who said the same thing. We ended up paying out of pocket to replace the engine. The mechanic who replaced the engine said there was no oil splatter under the car that would indicate an oil leak. Now on 1/15/26, the 2nd engine has now failed for apparently the same recall. For either engine there was never any warning of low oil or any evidence under the car of a leak.

Reporting motor has a cold start ticking sound coming from the motor.

Subject: Abnormal Engine Failure – Hyundai Case #[XXX] I am filing this complaint regarding my Hyundai vehicle, which suffered catastrophic engine failure at approximately 150,000 miles. While the vehicle is outside the standard warranty, this type of failure is not consistent with normal use or expected durability. Hyundai Motor America has acknowledged receipt of my certified demand letter (Case #[XXX]) but has refused to provide coverage, instead directing me to pay for towing and diagnostic costs. This position is unacceptable given Hyundai’s history of abnormal engine defects and related settlements. Key points: • The failure is abnormal and consistent with systemic defects Hyundai has faced in prior litigation, including the Theta II and Lambda II engine defect class actions, which resulted in recalls and settlements covering millions of vehicles. • Hyundai has previously extended goodwill repairs and recall coverage for similar failures, even outside warranty periods. • Engine failure at this mileage presents a serious safety hazard, including risk of stalling, fire, or loss of power while driving. • Hyundai’s refusal to cover towing and diagnostic costs places an unfair burden on consumers and may violate consumer protection statutes. Requested Action: I request that the agency investigate Hyundai’s handling of abnormal engine failures, ensure compliance with consumer protection and safety laws, and require Hyundai to provide coverage or reimbursement for towing, diagnostic, and repair costs in cases where engine failure is abnormal and unsafe. Supporting Documentation: • Certified demand letter sent to Hyundai Motor America. • Hyundai’s written denial (Case #[XXX], dated December 11, 2025). • Vehicle mileage and details of engine failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

At around the 120K mile odometer reading check engine light came on and upon checking the oil, noticed it was 1/2 qt. down in spite of a recent oil change. There were no other issues apparent to our mechanic. At the next oil change, we asked the techs to be sure to tighten the oil pan and all components as we mentioned the drop in oil after the previous oil change. This time, only 10 days after the oil change (we have been using hybrid blend since purchasing the vehicle new), the check engine light went on again and the oil was down a quart with no signs of leaking. Our mechanic checked it again and told us of many Hyundai oil consumption issues and suggested we check for a recall. My vehicle was not included in the oil consumption recall despite having the same year, model and engine as many of the other "certain" vehicles. We are currently negotiating a solution with Hyundai Motor Corp.

my engine started to make a horrible noise and the car won’t start anymore. Hyundai engines are known to burn oil and don’t light the low oil dash light until it is too late. Other Elantra trims have a recall for Hyundai to fix this yet mine does not.

Engine blew up on the highway almost causing an accident. The car has had problems with rapid oil consumption since 20000 miles on the car. Always checked oil everyday and added oil when needed and regular oil changes every 3000 miles car was very well taken care of. No oil light or check engine light came on when the engine blew up.

The vehicle is burning the engine oil. I get regular oil changes on time. I was told by the service center I had low oil at an oil change. It was changed and then again it a few months later I burned through the oil again. I checked it and there was very little oil. There is no leak. It is just burning it.

Spun bearing in engine. All service on vehicle up to date.

I am writing to formally file a safety complaint regarding my 2020 Hyundai Elantra. I recently learned that Hyundai issued a recall related to a defect that poses a risk of engine fires in certain vehicles. However, my vehicle, which has exhibited the same dangerous symptoms, was not included in this recall campaign. Specifically, my vehicle has experienced a critical error relating to a defect included in NHTSA Recall #21V-301, which I understand is directly related to the safety defect identified in Hyundai’s recall. Despite this, I have not received a recall notice, and Hyundai has declined to provide repair coverage under the recall. This raises serious concerns for my safety, the safety of my passengers, and the public. A defect that can cause an engine fire should not be limited to specific VIN ranges if the underlying issue is present in additional vehicles like mine. I respectfully request that NHTSA investigate this matter and ensure Hyundai expands the recall to include affected vehicles such as mine. If Hyundai continues to exclude vehicles with the same defect, I believe this could warrant further legal and consumer protection actions, including potential class action litigation. Please find my vehicle information below: 2020 Hyundai Elantra VIN: [XXX] Mileage: 51,000 Thank you for your time and attention to this urgent safety concern. I look forward to your response and am willing to provide additional documentation, repair invoices, or photographs as needed. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Burning oil at any unacceptable rate. I have made sure to have preventative maintenance and oil changes done every 3K miles. Hyundai needs to address this problem that appears to be plaguing many drivers.

The contact owns a 2020 Hyundai Elantra. The contact stated that while attempting to turn at approximately 5 MPH, the traction control warning light illuminated. The contact pulled over to the shoulder of the road and restarted the vehicle; however, the vehicle failed to accelerate as intended while the accelerator pedal was depressed. The check engine warning light was illuminated. The vehicle was towed to a local independent mechanic, where it was diagnosed with excessive oil consumption, catalytic converter failure, and related the failure to NHTSA Campaign Number: 21V301000 (Engine). The local dealer was contacted however, the VIN was not included in NHTSA Campaign Number: 21V301000 (Engine). The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 89,709.

The contact owns a 2020 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the vehicle hesitated and lost automotive power. No warning lights were illuminated. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The contact stated that an appointment with the dealer was scheduled to inspect the vehicle. The manufacturer was not made aware of the failure. The failure mileage was approximately 68,000.

Engine timing chains are failing in a direct result from recall campaign ID 21V301000 Piston ring noise sensing system which contaminated my oil accelerating wear on my engine chain and sprockets. A failed or ineffective piston ring noise sensing system can let piston/ring damage go unchecked, leading to oil contamination, which in turn wears out or destroys the timing chain system.

I experienced engine failure with this make and model out of no where. Seen online recalls in the past for same make, year, and model. Dealership and and corporate are not helping me one bit, threatening to charge me for storage, lied about my corporate case being denied, when I have email evidence it was still open, and now zero contact back from Hyundai corporation. I'm trying to seek legal advice and would love any help moving forward struggling gravelly from all of this. Thank you so much

The contact owns a 2020 Hyundai Elantra. The contact assisted in jumpstarting another vehicle with battery failure. The contact stated that the vehicle failed to start the next day after several attempts. There was no warning light illuminated. The contact stated that the TPMS warning light had been illuminated prior to the failure. Due to the failure, the vehicle was towed to two separate independent mechanics who informed the contact that the engine had failed. The dealer was notified of the failure and the contact was informed that there were no recalls on the vehicle. The manufacturer was not notified of the failure. The vehicle was not repaired and remained with an independent mechanic. The failure mileage was approximately 130,000.

2020 Elantra built in Alabama with 2.0L engine has P0016 code and severe oil sludge at 73K miles - identical to Recall 21V301 symptoms but excluded because manufactured in Alabama not Korea. This appears to be the same defect affecting a different production batch.

Took car into closest mechanic on Saturday 11/09/24 and was informed that both engine mounts were completely shot. Mechanic informed me car was unsafe to drive. Had the car repaired as Hyundai service center was closed. I contacted Hyundai on Monday 11/11/24 to let them know what happened. Received call yesterday from case manager that since I didn't take car to Hyundai facility they would not reimburse me the money paid on the repair. Mechanic at service station said it was unsafe to drive the car of his property. The mechanic also told me he has never seen either engine mount completely shot in care that was only 4 years old.

Engine failure: Engine light came on and oil level was abnormally low, even though oil had been changed not long before. Before able to add buy more oil to add when checked, the engine gradually lost pressure and wouldn't stay started. Died in the middle lane of highway all of a sudden. Inspection under hood showed that there was oil all around on engine and some on the ground. Towed to dealership and was not told of interim recall 21V-301. Possible acceleration of engine oil consumption due to bad piston oil rings. Later I researched and found that Hyundai was to inform owners that they were encouraged to check the level of oil periodically between oil changes...that accelerated oil consumption was possible due to this issue of the oil rings. Had to research and find myself.

The contact owns a 2020 Hyundai Elantra. The contact stated while driving at various speeds and releasing the accelerator pedal to come to a stop, the vehicle sputtered, made a clicking sound, and stalled. The check engine warning light was illuminated. The contact was able to pull over to the side of the road. The contact shifted to neutral(N) and was able to restart the vehicle. The contact stated that the failure had been recurring while driving. The vehicle was taken to an independent mechanic, where it was diagnosed with engine failure. The mechanic related the failure to NHTSA Campaign Number: 21V301000 (Engine) and referred the contact to the manufacturer for assistance. The dealer and the manufacturer were notified of the failure and informed the contact that the VIN was not included in the recall. The vehicle was not repaired. The failure mileage was approximately 70,000.

My vehicle stalled. I was heading to work and vehicle just cut off while driving. The day before it had started making a strange knocking, clicking sound. It will not charge and will not start up. I have not contacted manufacturer and not inspected by manufacturer. I checked vin # but not on recall list. I have kept my car up to date with servicing.The noise it made when it started to stall was really loud and then cut off. My safety was put at risk because I take the highway to work everyday and almost reached the highway that day before it stalled. My car is used for taking my kids to school, doctors appts and work. I am thankful my kids were not in the car when this happened. It had to be pushed off the road in a high traffic area causing a safety issue.

The engine at 41,000 miles had a catastrophic engine failure on December 22, 2023. It blew up with all maintenance done on time. I bought this car on February 28, 2023 and I heard the same knocking noise a week after the dealer kept my car for 36 days and was unable to re-create the problem. The car has now been in the shop for 15 days and I believe it is a complete lemon. I do not trust the safety of this vehicle and I see others are filing complaints ago Hyundai and Kia for the same thing I want to be reimbursed and my loan canceled.

On [XXX} 2023, [XXX]. I was driving to work which is only 5 miles away. All my my dash lights came on. Next thing I know smoke, and fire started billowing out from under the hood. I started having a panic attack because the electrical system died and I could get out of the car. I then realized all I had to do was open the door handle. I called 911 and the police and fire department came and put the fire out. The entire under the hood was burned and some windows cracked from the heat. It was a scary ordeal. Im not sure what cause the engine to catch fire. I filed a report with the police and the car was towed. My insurance came and towed it to do an evaluation. They deemed it a total loss and blamed the engine. There was a recall on my engine for fires and state farm documented it in my loss report. I'm not sure who to go after for this because I had the car for 10 months, put $4000 down. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)