2020 Hyundai Elantra: complete transmission failure

Filed Oct 30, 2026 · Transmission · OH

I am reporting a serious transmission problem with my 2020 Hyundai Elantra, which has approximately 66,000 miles I purchased this vehicle from a private seller approximately two months ago. At the time of purchase, the vehicle drove great, and I noticed no mechanical issues or unusual noises. After only two months of ownership, I began hearing a grinding noise coming from underneath the vehicle. The noise has progressively gotten worse and is now extremely loud. I took the vehicle to a professional mechanic, who inspected it and determined that the problem is the transmission. Although the vehicle still drives, the grinding noise is extremely concerning, and I am worried about the possibility of the transmission failing completely while I am driving. I find it alarming that a 2020 vehicle with only approximately 66,000 miles is experiencing what a mechanic has identified as a transmission failure. The vehicle has a rebuilt title, but there is no insurer "Total Loss" record showing in the vehicle history information. I have also checked for recalls associated with the VIN and have not found any except I did get a letter with a campaign recall I am requesting that the federal safety agency investigate whether this is a potential safety-related transmission defect affecting the 2020 Hyundai Elantra and whether other owners may be experiencing similar problems. I am a single mother who depends on this vehicle for transportation and caring for my family. I paid a substantial amount of money for this vehicle and have only owned it for two months. I am now facing what could be a very expensive transmission repair. My concern is not simply the financial burden. It is the safety risk of a transmission failing unexpectedly while the vehicle is being driven. I am asking that this complaint be documented and reviewed to determine whether further investigation into transmission problems with this model is warranted.

Filed Oct 15, 2026 · Engine · CA

The car went into 'limp mode' after rpm fluxuation. It's in the shop. Blake, a service manager at Temecula Hyundai, tells me it has "piston slap," which AI says is related to a piston ring recall for this car. Blake went on to say it has 2 power train issues (and needs a catalytic converter). the federal safety agency shows no recall, but whether engine or transmission, my daughter was nearly rear-ended due to this mechanical failure occurring on a two-lane highway at 55 mph. RE: Transmission (copied from Facebook): "Summarized by Meta AI " "Several 2020 Elantra owners describe shuddering, hesitation, and complete transmission failure at low mileage. Some report the car won’t accelerate from a stop or surges in RPM while cruising. Hyundai issued a recall for shifting issues that a software update can fix, but not all owners have been notified." It seems to me that the incident could have been transmission and the the engine 'piston slap' is conincidentally simultaneously discovered by Temecula Hyundai. Naturally, I conferred with AI as to the possibilities and found both transmission software recalls and a piston ring recall both a matter of record, but somehow not fully reported or complied with by Hyundai. Thank you for your attention to this matter.

Filed Aug 29, 2026 · Transmission · OR

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.

Filed Aug 20, 2026 · Transmission · SC

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.

Filed May 25, 2026 · Brakes, Engine · MD

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. the federal safety agency investigation and recall consideration requested. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 22, 2026 · Transmission · CA

I bought a 2020 Hyundai Elantra in 2024 with 67k miles on it. After driving 22k miles the check engine light went on and when it was brought in to get it checked the transmission went out. I did not buy a warranty so I understood it would not be covered. The issue I had was it was very hard to get information on the condition of the car that was sold to me. What I found out was that the transmission fluid was likley not changed ever and definetly not checked before the car was sold since the check engine light was not on and the engine sounded fine when I bought it. Which when I did meet with the service manager was informed of. The service manager noted that the IVT transmission has a long history of going out and is a bad design. He stated that most cars are not being made with it anymore and that this is well known problem. My biggest issue is that they knew this when it was sold and since the car was already over 60k when they got it should have at least checked the fluid or put in new fluid due to the history of transmission problems on the car. It is very likely this was not done to the likelihood the fluid was already bad and the transmission would have gone out so they wanted to pass it on to the customer. I know it is on me to know about a car when it is purchased but did not think of checking specifically on what type of transmission was in the car and now always will. I have had two Hyundai and both went over 200k without problem. To have one go 89k and go out was totally unexpected and there were no warnings except a check engine light. The service manager was nice but told me there was nothing that could be done.

Filed Feb 26, 2026 · GA

I took my car to McDonough Hyundai to get a transmission flush. 22 hrs later, the transmission died while my daughter was driving it. We had it towed back to the dealership and were told that they would not repair or replace the transmission they destroyed. I found out that my car is covered under Service Campaign 963 for the IVT transmission and they still won't fix my car and have been holding it hostage for about six months now. I've even lodged complaints with Hyundai Corporate and the BBB AND the GA Attorney General's office and either recieve no answer or they are running me around in circles. I just want them to fix my car and give it back to me!

Filed Feb 17, 2025 · Transmission · PA

Vehicle was recently purchased and brought in to service recall 22-01-030H (TCU Update and IVT Replacement) Fred Bean Hyundai of Langhorne (1106 E Lincoln Highway, Langhorne, PA, 19047) did the software update, but refuses to honor the IVT replacement as part of the recall, despite the transmission not working and needing to be towed to the dealership. They are attempting to charge me a minimum $5000 to replace the transmission, despite the replacement being covered under this recall campaign. Please contact me and advise if I should pay them and am then entitled to a reimbursement or if I should even have to pay them in the first place. They currently have my vehicle and I can't even drive it off-lot due to failed transmission.

Filed Feb 10, 2025 · Transmission · 70,000 miles · NH

The contact owns a 2020 Hyundai Elantra. The contact stated that while driving at various speeds, the RPM elevated to a high level while depressing the accelerator pedal. There was no warning light illuminated. The failure persisted while depressing the accelerator pedal without a warning light being illuminated. The contact used a code reader to diagnose the vehicle; however, no fault codes were found. The vehicle was taken to a dealer and was diagnosed with transmission failure. The vehicle remained in the possession of the dealer unrepaired. The manufacturer was not notified of the failure. The failure mileage was 70,000.

Filed Dec 31, 2024 · Engine, Transmission · IN

transmission failed while driving & now doesn’t drive.

Filed Apr 24, 2024 · Engine, Transmission · NV

This vehicle recently had a new engine and new transmission installed into it in february of this year. Less than 10k miles on it. The engine light came on on 4/12/2024 and I took it back to the dealer immediately. They called me on 4/15/2024 stating that their engineers and techs had had problems on the transmission recently installed on it due to manufacturing and/or faulty parts, and to replace that transmission with a new one. Still waiting to get the vehicle back at this point in time.

Filed Feb 24, 2024 · Transmission · NE

Transmission failed - car disabled at 85mph