2020 Hyundai Elantra Problems

The contact owns a 2020 Hyundai Elantra. While driving at an undisclosed speed, the vehicle suddenly shut off without warning. The contact referenced NHTSA Campaign Number: 21V301000 (Engine) as a potential cause for the failure; however, the VIN was not included in the recall. The contact stated that the vehicle shook violently with an abnormal electrical wire burning odor. The manufacturer was notified of the failure. The vehicle was taken to an authorized dealer, where it was diagnosed with an engine starter failure. The engine starter was replaced; however, the failure persisted. The failure mileage was 102,474.

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)

Transmission TCM/IVT had a service campaign recall #963 for TCM relearn / IVT replacement for premature transmission failure. Hyundai USA and dealership Big Star Hyundai of Friendswood, TX have made claims of the repair being done. Service records indicate there was no replacement, relearn or anything transmission related done with the vehicle and Hyundai USA has claimed on their end that their records show it was completed, but refuse to show or display records of completion, and have not maintained outreach to the dealership regarding maintenance records for this specific issue. Transmission has popped a P0867 code at 65,000 miles, just outside of it's warranty, and reflects the same codes listed for an issue regarding the TCM/IVT service campaign 963. The safety risk is the transmission giving way on a highway or some other location where it could potentially lead to an accident or stranding, that could lead to serious injury or death. This puts other vehicles on the road and passengers at high risk for an accident or incident. The problem has been reproduced by my husband, and confirmed with ECM readers. Independent service in Atascocita TX confirmed the check engine light indeed coincided with the P0867 code and that it has to do with the very same recall they have claimed to have supported and completed, which is once again not listed under any service completed on the vehicle. We are attempting to have this component looked at by the dealership, but they refuse to acknowledge the service campaign 963 and allow an inspection of no-charge. My husband has already observed with a endoscope, and observed the transmission fluid, and replaced it, and there was no obvious signs of an issue. There were no previous issues to the vehicle, and no previous lights. After the light for the code came onto the dashboard, the transmission has now struggled to maintain steady fluid transitioning between gears, and has maintained a sluggish and resistance feeling.

My 2020 Hyundai Elantra SEL experienced a total transmission/IVT failure at 81,185 miles. I paid $4,804.14 out of pocket to have the vehicle repaired at a certified Hyundai dealership, Dick Smith Hyundai Genesis of Greenville, now known as Hyundai of Greenville. The transmission was replaced with a new replacement unit. The replacement transmission has now suffered a second total failure at 117,922 miles, meaning the vehicle has experienced two total transmission failures before reaching 120,000 miles. The repeated failure of the IVT system is extremely concerning, particularly because the first replacement was performed by an authorized Hyundai dealership and the replacement unit failed after approximately 36,700 miles. I am requesting that this repeated transmission failure be documented and investigated. I also believe Hyundai should review the vehicle’s transmission history and consider the possibility of a systemic defect or premature failure involving the IVT system. I have already contacted Hyundai Customer Care regarding a Prior Repair Goodwill Reimbursement request for the $4,804.14 I previously paid out of pocket. Hyundai Customer Care case #43147944 was denied based on the vehicle being outside the factory warranty, although Hyundai directed me to the dealership for possible goodwill consideration. I am requesting full retroactive reimbursement of the $4,804.14 I paid for the first transmission replacement. I can provide the original repair invoice, service records, diagnosis, and documentation of the subsequent transmission failure upon request.

The high beam lights don’t work. Doesn’t make changes to high. Relay, bulbs and breakers appear to be ok.

Unknown and about 4 months ago my headlights stopped working one would go out I’d replace the bulb then the other goes out then a different bulb in my headlight would go out I’d replace it and it would go out again then the connectors were unresponsive then my height beams won’t engage leaving me with little to no light in order to operate my vehicle at night and oddly enough they would disengage while driving leaving me visually impaired while driving

Logic board failure part number 99211-F2000 leading to inoperable lane keeping assist and forward collision avoidance.

I have a 2020 Hyundai Elantra Limited that was purchased new in December of 2020, has 17,764 miles, and no damage. At the end of May/early June of 2026, the car gave warning messages for the following: check forward collision avoidance assist system, check lane keep assist system, and check high beam assist system. The car was inspected by the dealership, from which it was purchased, on June 29, 2026. The technician report says error codes C1604 and C1606 were found and that the car required replacement of the front camera system at the cost of $1991.49. Front camera failure negates the ability to use the advanced safety features of this car. These features are so important to alert and, more importantly, assist the driver avoid accidents and improve all motorists safety. I have read numerous complaints depicting the same problem with this front camera system. Hyundai issued TSB 20-BE-006H due to multiple problems just like the one that happened to me. I have corresponded with Hyundai about this situation and my concerns on why a car with this few miles and no damage had a failure of this magnitude. They are unwilling to assist due to the warranty expiring 6 months ago. For components this important to the safety of all drivers, I would like to see a recall established to hold Hyundai accountable for faulty components. Safety should not be limited by a warranty and last longer than 5 1/2 years. Than you for your consideration.

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 high beam lights don’t work. Doesn’t make changes to high. Relay, bulbs and breakers appear to be ok.

Steering wheel has been making whining noises when turning. Previously replaced worm shaft on steering while under warranty due to malfunction when first purchased. Issue has resurfaced but no longer covered under warranty. Dealer quoted nearly $800.00 to replace worm shaft.

On January 1, 2025, I discovered my vehicle had been stolen after finding broken glass in my driveway and immediately reported the incident to the police, who arrived within approximately 20 minutes; neighbors later provided camera footage of the theft, and I also observed other nearby vehicles with similar damage, including a broken rear window and another Hyundai Elantra that appeared abandoned. The following day, police informed me the vehicle had been recovered, and upon inspection I found the rear driver-side window completely broken and the ignition area under the steering wheel damaged. Couple months later I received a recall notice for the antitheft system on my 2020 Hyundai Elantra (VIN [XXX] ). When I brought the vehicle to the dealership on April 1, 2026, I was informed that the recall cannot be completed unless an additional part is replaced, at a cost of approximately $1,178. This part was damaged during a prior theft incident. My vehicle was stolen last year and later recovered, and it sustained damage during that incident. However, I understand that safety recalls are required to be repaired at no cost to the owner under federal law. I am concerned that I am being asked to pay for repairs in order to complete a safety recall, and that my vehicle remains vulnerable without the recall remedy being performed. I am also concerned about the safety and legal compliance of continuing to operate the vehicle under these conditions. I am attaching supporting documents as proof of the vehicle theft, along with the reports provided by the dealer. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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)

I am submitting this complaint to document ongoing brake related concerns on my 2020 Hyundai Elantra that may affect vehicle safety. Since April 2024, I have experienced repeated brake rotor warpage that causes vibration during braking, reduced braking consistency, and a noticeable change in stopping behavior. These symptoms raise concerns about braking performance and overall vehicle control. I reported the issue to Hyundai Motor America and followed their required warranty process, including an inspection at High Desert Hyundai. The dealership indicated the condition should be covered under warranty, but I was charged twice for what should have been a no cost warranty inspection. HMA later denied warranty coverage based on an undefined claim of “outside influence” without providing any criteria, explanation, or evidence supporting that conclusion. The denial prevented me from understanding the basis of their determination or how it applied to the brake condition. HMA then directed me into the BBB Auto Line program under case number HYU2605570 as the next step for disputing the decision. Throughout this process, Hyundai did not provide any additional information or documentation explaining the cause of the brake condition or addressing the safety concerns I raised. Because braking performance affects stopping distance and vehicle control, I am reporting this issue to NHTSA so the agency is aware of the repeated brake vibration and rotor warpage, the inconsistent braking behavior, and the lack of clarity from the manufacturer regarding the cause. I possess all invoices, communications, photographs, and documentation related to the inspections and interactions with the dealership, HMA, and BBB Auto Line, and I have maintained these records since April 2024. I also filed a complaint with the NHTSA for this same reason on February 4, 2025, complaint no. 11638352, for reference.

Within a matter of a few days my car has been stopping by itself. The car was smoking and stopping in the middle of the highway, my dealership is proving me with a new engine but is trying to have me come out of pocket for an fuel injector, please help !

I see there was a P0420 error code related to catalytic converter oil consumption recall, but when I put in my VIN it said no recalls. This is for a 2020 Hyundai Elantra 2020. The problem comes and goes and was able to be reproduced or confirmed by a dealer Hyundai. The warning lamps, messages comes on frequently and was reportedly fixed charges $2000 for a sensor. I the code and it is all over the internet that it is a recall.but does not show up with VIN.i need assistance with getting this fixed at the dealer

A few weeks ago, I was driving home on a 3-Lane local state route here in NJ from a family outing on a rainy dark evening when a large portion of the body paint from the hood flaked / peeled off and somehow got stuck under the drivers side windshield wiper as they were on during the rain at highway speed. It was a large enough piece (at least 3" wide) , to not only get stuck under the wiper, but create a serious issue for me to see out the windshield where the wiper wouldn't clear my vision out of the windshield. I managed somehow to safely pull to the side of the road and get out to inspect what it was.. I was able to remove the large piece of peeling paint from under the wiper but it did ruin the edge of the wiper blade which made for a treacherous drive home and I had to replace the wiper at a later date. The paint is peeling from all over my car (Hood, Pillars, Roof) and I've done my best to get all the loose pieces off but I'm afraid to drive it anywhere with the thought more paint will peel off with the wind & get carried to someone else driving behind me. My Hyundai Elantra is a 2020 and has only 48,526 miles currently. I contacted my local Hyundai dealer who advised me I am "Out of warranty for paint coverage" and suggested I further open a case with Hyundai Corporate, which I did, and was assigned a case manager who requested I take it back to my local Hyundai dealer in Avenel, NJ (Sansone) and have a service advisor/technician take pictures and submit them to Warranty Services for a "goodwill repair". Hyundai came back with a "DECLINED" status from it being "Out of warranty caused by the time in service and mileage of the vehicle" and "no goodwill assistance is being offered at this time". The estimate from Hyundai claimed it would cost approx $6,500 to have the car repainted according to the service printout. The dealership and Hyundai are both aware of many, many vehicles that entire pieces of paint are just peeling / falling off several colored cars.

Paint is peeling off vehicle.

I no longer have this vehicle, as I traded it in once I was able to lower some of my negative equity. During owning the 2020 Hyundai Elantra, a deer it the side of my vehicle and knocked me into the center of the road while I was driving. No airbags had come out, nor was any sensor activated. About 6-8 months later, I was driving down the same road and a deer had run across the road. The forward collision sensor did not alert me (I was paying attention to the road, but would have absolutely heard it), and my airbags did not deploy. My car suffered over $9,000 in damage and I had a concussion.

On [XXX] at about 1:40 p.m. I was driving to work, and got distracted and had a front-end collision with a tree that was about 1-3 feet next to the side of the road. Extensive damage to the vehicle, and personal injuries occurred (mild concussion, stress fracture of left forearm, bruising/abrasion on ride side torso, sprained left thumb, and abrasions on head). Both the driver and passenger airbags did not deploy which contributed to me almost flying through the windshield. The emergency responders and tow truck operator were very surprised I wasn't in critical condition or dead and noted that the airbags failing was a serious issue and I was lucky. This was reported to the manufacturer and geico insurance on December 20th, and I am currently awaiting to hear back from both to get the inspections scheduled. The vehicle is currently located at OC's Auto at 598 Armistead Blvd, Holt FL 32564. I have already signed papers giving permission for inspections by the insurance company if they request it, but currently inspections haven't been done yet to determine damage estimates or to investigate the airbags. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Every time I go up a hill the slippery road light comes up. It’s hard to drive straight. I have to drive under the speed limit going up hills. Sometimes it won’t even let me park. I hear rattling when I drive over a certain speed limit. When I brake I feel the brake pad pushing back. And now my wheels are making noise when I turn them.

I was in the inside left turn lane turning left and as I was turning my steering wheel my car was not turning, it was continuing to go straight. I hit my brakes so I wouldn’t crash into the car turning next to me and then my wheels finally turned as I was braking so it caused me to burn the tires and swerve. I’m not sure if any lights came on as I was trying not to crash into the vehicle next to me. I have an appointment for the dealership to look at it.

Unknown

The contact owns a 2020 Hyundai Elantra. The contact stated while driving approximately 20 – 25 MPH uphill and going around a corner, the contact heard a snap and the traction control immediately activated. The contact then lost control of the vehicle. There was no warning light illuminated. The contact was unsure if the she had encountered a patch of ice on the roadway. The contact stated that she turned the steering wheel to the left to avoid hitting a sign pole with the driver’s side of the vehicle; however, the passenger’s side front bumper and wheel well area crashed into a telephone pole. She then heard a snap in her left arm right before she lost consciousness. The contact stated that the air bags had not deploy and she was thankful that they had not deployed. The contact stated that she was not immediately aware that she had fractured the bone in her left arm. The contact regained consciousness and drove the vehicle to her residence. The contact received no medical assistance at the crash scene but sought medical attention from the hospital the following day. A police report was not filed. The vehicle was then taken to an auto body shop to be inspected. The contact was informed that the lower control arm ball joint was damaged and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 45,000.

The contact owns a 2020 Hyundai Elantra. The contact stated while driving the vehicle at an undisclosed speed, the tire pressure and check engine warning lights illuminated. The contact took the vehicle to an independent mechanic who checked the tire pressure and the engine oil levels. The contact was informed that the levels were at the correct levels however, the TPMS warning light remained illuminated. The local dealer diagnosed the vehicle with a defective sensor. The dealer performed am electronic control module software update to attempt to fix the failure however, the failure persisted. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was unknown.

No warning lamps. Incident reported to tire manufacturer; no liability acknowledged. While parking at very low speed, sidewall contacted smooth metal curb at a slight angle and blew out. IMO, tire should have withstood the typical parking process and not destroyed the sidewall and burst under the conditions.

The contact's girlfriend owns a 2020 Hyundai Elantra. The contact stated that while his girlfriend was driving at an undisclosed speed, the transmission failed to downshift into 2nd gear. Additionally, the vehicle was shaking while shifting gear. No warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed that the clutch assembly was the incorrect size, and the clutch assembly was replaced. The manufacturer was made aware of the failure. The failure mileage was approximately 43,117.

2020 HYUNDAI ELANTRA. CONSUMER WRITES IN REGARDS TO TRANSMISSION FAILURE. THE CONSUMER STATED THE VEHICLE FAILED AT 2,200 MILES. THE CONSUMER ALO STATED, WITH THE CRUISE CONTROL ENGAGED, THE RPMS RISE ABOUT 500 RPMS WHILE MAINTAINING A STEADY SPEED. THE MANUFACTURER WAS NOTIFIED BUT, DID NOT OFFER ANY ASSISTANCE.

leak without windshield

WINDSHIELDS SAFETY DEFECT ' HYUNDAI ELANTRA 2020 GREETINGS, I AM WRITING TO INFORM YOU OF MY PURCHASE OF A DEFECTIVE BRAND-NEW HYUNDAI ELANTRA LESS THAN THREE WEEKS AGO ON JANUARY 06, 2020, FROM BOB BAKER HYUNDAI IN CARLSBAD, CALIFORNIA. WHILE TEST DRIVING THE CAR, I NOTICED A HAZINESS TO THE WINDSHIELD WHEN DRIVING DIRECTLY INTO THE SUN. I WAS TOLD BY A HYUNDAI SALESMAN, [XXX] THAT THIS HAZINESS MIGHT BE DIRT AND THAT THE DEALERSHIP WOULD WASH THE CAR BEFORE I TOOK IT HOME THUS TAKING CARE OF THE PROBLEM. LATER, AFTER A CAREFUL EXAMINATION, I OBSERVED THAT THE WINDSHIELD HAD A SPECKLE DEFECT CAUSING MASSIVE SCATTERING AND HAZINESS OF MY FIELD OF VISION WHEN DRIVING DIRECTLY INTO THE SUN, A FREQUENT DRIVING CONDITION HERE IN SOUTHERN CALIFORNIA. I ALSO OBSERVED THAT THIS DEFECT EXISTS IN ALL SIX CAR WINDOWS (FRONT WINDSHIELD, FOUR SIDE WINDOWS AND BACK WINDSHIELD). THIS DEFECT IS PARTICULARLY NOTICEABLE SINCE I COMMUTE EARLY MORNINGS AND EVENINGS, TIMES WHEN THE SUN IS LOW AND DIRECTLY IN MY FIELD OF VISION. I WANT TO EMPHASIZE THAT THIS MANUFACTURING DEFECT IMPAIRS THE DRIVABILITY OF THE CAR AND IS A CONSIDERABLE RISK TO MY PERSONAL SAFETY. IT IS HARD FOR ME TO DETERMINE IF THIS DEFECT MIGHT NOT ALSO BE CAUSING A MECHANICAL DEGRADATION OF THE WINDSHIELD'S STRENGTH. ON JANUARY 24, 2020, I TOOK THE VEHICLE BACK TO THE DEALERSHIP AND MET WITH [XXX], THE SALES MANAGER. DURING THIS MEETING THE HYUNDAI REPRESENTATIVE EASILY DETECTED AND CONFIRMED THE WINDOWS' DEFECT. THIS REPRESENTATIVE ALSO TOLD ME THAT THE DEALERSHIP WAS AWARE OF THIS DEFECT AND THAT OTHER CUSTOMERS HAD REPORTED THIS ISSUE I ALSO LEARNED THAT I AM NOT THE ONLY CUSTOMER THAT HAS HAD THIS COMPLAINT AND THAT THE VEHICLE WAS KNOWINGLY SOLD TO ME IN THIS CONDITION. I'M ATTACHING FIVE (5) IMAGES THAT DEMONSTRATE THIS DEFECT. BEST REGARDS, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

Since I have bought my Elantra, I have had problems with the seatbelt alarm going off, when nobody or, maybe just a purse or wallet in the seat on occasions. Either way I shouldn't have to utilize passenger seatbelt to keep from beeping; when there is no passenger riding at the time of warning beeps.

Car emitted carbon monoxide into car cabin, causing driver to lose consciousness and crash on highway and burst into flames