Power Train Problems of Hyundai Elantra - part 1

Reporting on 2020 Hyundai Elantra. I have owned since 2023, my car is currently at a Hyundai certified dealership for it's 3rd transmission in the three years I have owned it. All 3 transmission were inspected and then replaced by Hyundai certified technicians. The safety aspect is the inability to get you vehicle off the highway.

See all problems of the 2020 Hyundai Elantra 🔎.

What component or system failed or malfunctioned, and is it available for inspection upon request? how was your safety or the safety of others put at risk? the ignition coil in my 2017 Hyundai Elantra limited has failed multiple times over the past several years. This recurring issue has caused the vehicle to malfunction unexpectedly, creating safety concerns due to reduced engine performance, misfiring, and the potential for sudden loss of power while driving, which puts both myself and others on the road at risk. The failed component is available for inspection upon request. Has the problem been reproduced or confirmed by a dealer or independent service center? this issue has occurred multiple times with my vehicle. After researching online consumer reports and owner complaints, I found that ignition coil failures appear to be a common and recurring issue reported by other 2017 Hyundai Elantra limited owners. Based on these repeated failures and similar reports, this appears to be a known issue affecting this model. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? I have reported this issue to Hyundai multiple times. Rather than addressing the root cause or issuing a recall for this recurring defect, Hyundai has repeatedly provided credits to assist with repair costs when the ignition coil fails. Despite the repeated failures and safety concerns, the underlying issue has not been permanently resolved. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? prior to failure, the vehicle would experience rough starts, engine misfires, and poor performance. After these symptoms began, the check engine light would eventually illuminate. Once the warning light appeared, the vehicle became increasingly unreliable and would stall or shut off unexpectedly. On one occasion, the vehicle shut off completely while I was driving.

See all problems of the 2017 Hyundai Elantra 🔎.

1. The engine architecture suffered a catastrophic mechanical failure. Specifically, severe, systemic internal oil consumption/vaporization starved the hydraulic timing chain tensioner of critical hydrostatic pressure. This caused the tensioner to collapse, creating slack in the steel timing chain, which then "jumped time" (skipped a tooth on the camshaft sprockets), causing the engine to instantly seize and lose all motive power. The vehicle and engine are fully intact and available for inspection at pohanka Hyundai of fredericksburg. 2. The vehicle suffered a sudden, complete loss of motive power and engine seizure while being driven at night on an unlit, dark secondary roadway. The driver (my daughter) was left suddenly stranded without power in a highly vulnerable, pitch-black location with passing traffic, presenting an immediate collision hazard and a severe personal safety risk before emergency assistance could arrive. 3. Yes. The vehicle was towed to an authorized Hyundai dealership (pohanka Hyundai of fredericksburg), where service technicians officially diagnosed that the engine had "jumped timing" and suffered a complete failure of the timing system, alongside a noted lack of engine oil volume due to vaporization. 4. The vehicle has been formally inspected and diagnosed by the authorized Hyundai dealership service department under Hyundai motor America corporate case #[xxx]. No police or insurance inspections were required as no collision occurred. 5. No dash lights or warnings before failure. However, for a year prior, the engine exhibited severe internal oil vaporization, requiring constant top-offs between scheduled oil changes to maintain safe levels. There were zero external fluid leaks on the engine or ground; oil burned entirely internally. This chronic volumetric oil loss directly caused the sudden drop in pressure, hydraulic tensioner collapse, and catastrophic engine seizure. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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.

The contact owns a 2020 Hyundai Elantra. The contact stated while operating the vehicle at an undisclosed speed, he noticed that his rpm were going back and forth while on cruise control, after removing cruise control the vehicle stayed the same. The vehicle was pulled over and restarted but the vehicle was hesitating to accelerate and noticed a issue with the gears not. The vehicle was towed to a independent mechanic but was not fully diagnosed due to the transmission driving forward when in neutral. The dealer was notified of the failure and a appointment was set for a later date. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 106,000.

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.

The contact owns a 2024 Hyundai Elantra. The contact stated that while driving, check engine light illuminated, with a loss of power when accelerating. The vehicle was taken to the dealer where it was diagnosed with power train failure and received diagnostic code p040100. The vehicle was repaired; however, the issue persisted. The vehicle was returned to the dealer multiple times but still continued the manufacturer was notified of the failure. The approximate failure mileage was 43,000.

See all problems of the 2024 Hyundai Elantra 🔎.

The 2. 0l nu gdi engine in this vehicle is experiencing terminal internal failure. Following a p1326 ksds warning event, a borescope inspection at an authorized dealership documented severe cylinder wall scoring in all four cylinders. Despite this documented internal block destruction, the manufacturer has denied the mandated settlement warranty repair based on a software-based proxy test (bct). The vehicle was returned in an unsafe condition and is currently stalling and vibrating violently while in traffic, posing an immediate risk of loss of power and traffic collision. The manufacturer is ignoring the documented physical failure of a core engine component.

See all problems of the 2014 Hyundai Elantra 🔎.

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 significant engine failure occurred while driving, presenting as loud knocking from the engine. The issue developed without prior warning lights or messages. The vehicle was inspected by a dealership and the problem was confirmed as internal engine failure (piston slap/engine knock). The dealership recommended full engine replacement. The engine is available for inspection upon request. There was no evidence of sludge or lack of maintenance noted during inspection. The most recent oil change had been performed less than 1,000 miles prior to the failure, indicating the issue was not caused by lack of maintenance. This condition creates a safety concern due to the potential for sudden engine failure, loss of power, or engine seizure while driving, which could increase the risk of an accident, especially at highway speeds. The issue has been confirmed by a dealership and has not been repaired due to cost.

See all problems of the 2013 Hyundai Elantra 🔎.

The contact owns a 2019 Hyundai Elantra. The contact stated that the high-beam headlights were inoperable. Additionally, the contact stated that while driving at 15-20 mph, the check engine warning light illuminated, and the vehicle stalled. The contact was able to pull over to the side of the road. The vehicle was able to restart and was driven to the auto body repair shop, where it was recently repaired due to front bumper damage sustained in an accident. The auto body repair shop then towed the vehicle to the dealer, where dtc: p0017 and p0014 were retrieved. The dealer informed the contact that a visual inspection was needed to confirm whether the failure was related to the continuously variable valve timing (cvvt). The vehicle was not yet diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 116,421.

See all problems of the 2019 Hyundai Elantra 🔎.

Engine began sputtering really bad and the check engine light came on. I brought the vehicle to the dealership that I purchased it from and they recommended a fuel system flush and change the spark plugs. I had them change the spark plugs and the check engine was cleared but still sputtered a bit. So I brought it to my mechanic who does most of my work and his diagnosis was that oil was blowing by and to not drive it and have towed to Hyundai cause they've been seeing all kinds of engine problems on Hyundai's and that they since the warranty was 100k miles and I had just reached 104k miles that they may fix it. It is currently at Hyundai dealership being diagnosed. *I was driving on the interstate when engine began shaking in the middle of rush hour traffic making it difficult to pull over to see if I could see anything. *independent mechanic replicated and said to not drive the vehicle. *Hyundai is currently inspecting the vehicle now. *check engine light came on after the violent sputtering of the engine.

See all problems of the 2023 Hyundai Elantra 🔎.

The contact owns a 2023 Hyundai Elantra. The contact stated that while the vehicle was at a full stop, the brake pedal was released, and the vehicle surged forward before the accelerator pedal was depressed. The contact stated that the failure was intermittent. There were no warning lights illuminated. The contact had taken the vehicle to a local dealer, who was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 15,000.

Hybrid system failure ----- 2025 Hyundai Elantra hybrid (blue trim) the instrument panel showed hybrid system failure, and the engine died on the freeway at 70 mph. Luckily, I was able to pull to the right shoulder on a busy freeway. I tried restarting the car, but the instrument panel turned off after one second for the first two tries, and then nothing would turn on. I had it towed to lithia Hyundai of fresno on February 11, 2025. The car is still at the dealer being diagnosed and repaired for hybrid system failure with total power loss. Extremely dangerous to have the engine cut out at 70 mph on a busy freeway.

See all problems of the 2025 Hyundai Elantra 🔎.

Nhtsa 20v-061 (Hyundai 188): abs/hecu module NHTSA 15v-100 (Hyundai 127): electric power steering (eps) NHTSA 13v-113 (Hyundai 110): brake light switch.

See all problems of the 2009 Hyundai Elantra 🔎.

2013 Hyundai sonata has a loud knocking noise from engine. Purchases 8/5/25 at 43k miles, currently at 44k miles. There is a technical service bulletin, # 22-em-009h dated June 2022 about an extended warranty but its time limit is questionable. Unknown and undocumented when purchased. Not listed as an official recall so not covered under warranty repair and the only course of action I have been given is install a new motor quoted at $15k from local Hyundai dealer. Further research shows that driving should be limited to avoid further engine issues/fires. Occurrence since January 2026. Progressively worsening. Cause for concern. Is there an official recall on for the piston flap pending? unsure if accident noted below is due to the issue.

I own a 2019 Hyundai Elantra value edition . 2. 0l 1999cc l4. A few weeks ago we started with really cold/snowy weather and as I’m driving I’ve noticed weird knocking sound that sounds like a Ford f250 starting up. Today while stopped in traffic with the vehicle idling, the 2019 Hyundai Elantra cut off into the battery mode as if I just have my car running off of my battery (roll windows up) and all of the lights on the dash board on. I put my car on the break to turn my car off and it went back into drive mode, it didn’t shut off. I tried accelerating my car went no where, within a few minutes it did it multiple times. I called the local dealer and was informed that there were no recalls associated with the VIN. I let Hyundai webb aware of the failure. The failure mileage was approximately 197,000.

Was driving car after a recent oil change. The oil change was performed early because the car was ticking and found oil to be low. Was going to take into dealer to be looked into but the car made a loud sound and stopped immediately and turned off. Luckily I was not driving too fast but had I been this could have posed a risk to myself, my passengers and other drivers. This complaint is consistent with prior engine failure complains of other Hyundai models. The Elantra has yet to be investigated. The maintenance lights that came on have only been for a high mount break light and low tire pressure. I did not get a low oil or oil change needed alert.

What component or system failed or malfunctioned, and is it available for inspection upon request? the car began stalling and started to become unresponsive while I was driving to work. While I was not 100% sure of what component was malfunctioning at the time, I suspected that it might be a timing chain problem because I had this same exact issue happen to to this car back in January 2025. I did not expect this issue to occur again because at the time of the previous problem, the dealership confirmed that issue was the timing chain and the vvt system, and replaced those components with new parts. How was your safety or the safety of others put at risk? the car started stalling and sputtering, then became unresponsive while I was driving. If I were in a high-traffic area, I'm not confident that I would have been able to accelerate, stop, or safely pull over to the side of the road without putting myself and/or someone else in harms way. Has the problem been reproduced or confirmed by a dealer or independent service center? yes, the car is currently at the dealership and they confirmed that the issue is the timing chain and the vvt system. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? yes, the car is currently at the dealership and they confirmed that the issue is the timing chain and the vvt system. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no, there were absolutely no warning lights, messages, or symptoms prior to the failure.

See all problems of the 2018 Hyundai Elantra 🔎.

I was at a red light waiting to go an when it was time to go my car would not go. It was on it would not go into gear. It will reverse. It just won't go forward in auto or manual. Im the 1st owner of this car. I bought it new. I need Hyundai to take care of this problem. Asap please. It happened the car only has 133,718 miles on it and been serviced regularly since I bought it.

See all problems of the 2015 Hyundai Elantra 🔎.

While driving, pressing the accelerator pedal, the vehicle hesitated and stalled. No warning lights came on until after I attempted to turn the vehicle back on then the check engine light and low oil light were illuminated. My vehicle was towed to a local mechanic and I was informed that the engine was blown and to tow my car to a Hyundai dealership as I was still under the 10 year/100k mile warranty. After getting my car to Hyundai, I was told I had to get a combustion cleaning for $800 whether the cleaning worked or not before any warranty work could be completed. The cleaning did not work and it was then found that a pin was sheared off inside the engine. My engine was then replaced under warranty but I still had to pay for the cleaning. A second mechanic looked over my paperwork after getting my car back 2 months later and noted that the engine failure could have been diagnosed without the cleaning as the cleaning would not have affected where the pin was sheared off. My 2017 Elantra had 90,315 at the time of this incident.

Vehicle started to violently lurch when shifted into drive. A week later loud clunking sound also started when shifting into drive. Sometimes would not go into drive and had to use manual 1st, 2nd, etc. Reverse was fine, no issues. No dash lights ever came on. Auto parts store had error code p0722. Have a diagnostic appt in a week at local Hyundai dealer. We may attempt to replace input/output speed sensor to solve, but probably will let dealership do diag first. Mileage approx 84686. Very dangerous at stop lights if can not get car into drive. Crash risk is high.

See all problems of the 2016 Hyundai Elantra 🔎.

Car stalls when driving and the cvvt failed and Hyundai refuses to pay for it.

I have been having transmission issues with my car since before July 2024. The transmission would stutter or not engage when I put my foot on the accelerator. The transmission failed in November 2024 and was eventually replaced by Hyundai in may 2025. I noticed stuttering the first day of having my car back but was told there was nothing wrong with it. Today, sept. 11, I was making a left turn on a busy two lane road. I had enough distance between the oncoming truck to make the turn. When I put my foot on the accelerator, my car rolls into the road but clutch is not engaging. As the truck is now fast approaching my car that's basically sitting in the road the clutch engages. Since my foot had been on the accelerator the whole time, I was probably at like 3000rpm so we lunged forward slamming our heads into the seat. Every time I have taken this car to Hyundai complaining about issues with the transmission they say it's perfectly fine. Since their certified technicians say it's perfectly fine, then I am only left to assume that there is an inherent flaw in the transmission that is allowing events like this to occur and based on my experience have the potential to result in a crash.

I am reporting a recurring issue with my 2023 Hyundai Elantra where the low oil pressure warning light illuminates consistently during strong acceleration. This is accompanied by a distinct smoky odor from the vehicle. Based on my research into recall 23v-859, which addresses fire risks from a faulty electronic controller for the oil pump in the idle stop & go system, I believe my vehicle is experiencing a related or identical failure. The symptoms strongly suggest that the defective oil pump controller is malfunctioning under load, potentially leading to dangerous overheating and a short circuit.

While it may sound bizarre, I can definitively demonstrate that whenever I am present inside a car, the car become very unstable and bouncy and unsafe to operate. Not only does it not steer straight the car also becomes incapable of coasting smoothly and is constantly racing or aggressively slowing down. I can’t be the only anomaly and whatever is causing this could be widespread and is certainly dangerous. I have found it to occur only with the cars which I am inside. I would like to demonstrate this in person if possible to an investigator.

Dual clutch transmission failed at 49,000 miles.

The contact owns a 2020 Hyundai Elantra. The contact stated that occasionally, while driving at various speeds, the transmission was slipping. The contact stated that while attempting to accelerate from a stop, the transmission was slipping, with the check engine warning light illuminated. The vehicle was towed to a local dealer, where it was diagnosed, and the contact was informed that the failure could not be duplicated and that no fault was found with the vehicle; however, metal shavings were found in the transmission fluid. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 100,781.

The contact owns a 2016 Hyundai Elantra. The contact stated that while driving at 45 mph, the vehicle jerked with an abnormal sound coming from the transmission while shifting gears. In addition, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the vehicle stalled. No warning lights were illuminated. The contact was able to coast to the side of the road. The vehicle was towed to the dealer, where it was diagnosed with transmission failure due to a workmanship error. The contact was informed that the transmission needed to be replaced. The vehicle remained at the dealer unrepaired due to the cost. The dealer notified the manufacturer of the failure and submitted a request for a new transmission. The manufacturer declined the request. The contact notified the manufacturer and was informed that there was no extended warranty on the vehicle declined to offer any assistance. The failure mileage was approximately 93,000.

While driving on the freeway at normal highway speed, the vehicle experienced a sudden and catastrophic engine failure. The engine immediately lost power, and the vehicle shut down within seconds. There was no prior warning or opportunity to take corrective action. The vehicle became completely disabled and could not be driven. This occurred late at night with limited traffic, and I was lucky to be near a freeway exit. I was able to coast toward the exit, but the engine seized fully, resulting in total loss of propulsion and blocking the freeway exit ramp. Law enforcement had to assist due to the disabled vehicle creating a traffic obstruction and safety hazard. A tow truck was required to remove the vehicle because it could not be restarted or moved. Under normal traffic conditions, this sudden loss of engine power at freeway speed could have resulted in a serious, potentially fatal collision. The outcome depended on luck, timing, and location rather than any safety system functioning as intended. The engine was later diagnosed by an authorized Hyundai dealership as seized due to internal failure. Hyundai denied warranty coverage because a software safety campaign had not been completed prior to the failure, even though the failure occurred suddenly and without warning, leaving no opportunity to complete the campaign. However, at the time of the failure, the NHTSA recall lookup tool showed zero unrepaired recalls associated with this vehicle’s VIN. The campaign referenced by Hyundai is intended only to detect certain engine conditions and does not repair engine defects. In this case, the engine failed before any detection or warning could occur. The vehicle had just been refueled and was equipped with four brand-new tires, confirming it was being operated normally. This incident involved an unexpected and complete loss of engine power at freeway speed due to an apparent engine defect, presenting a serious safety risk to the driver and other motorists.

I was driving and I felt my car sputter and lunge forward slightly. Then my car lost power and when I pressed down on the accelerator it would not give out any power. The battery light came on and the car would not start after pulling over.

See all problems of the 2007 Hyundai Elantra 🔎.

Check hybrid system alarmed in heavy traffic and derated my car and put me in a very dangerous situation.

See all problems of the 2021 Hyundai Elantra 🔎.

On [xxx] and [xxx], while driving at approximately 50 mph, my vehicle experienced a sudden and complete loss of power, presenting an immediate safety hazard. The incident unfolded as follows: without warning, the car emitted an alarming sound from the cabin. Simultaneously, a message appeared on the dashboard stating "check hybrid system" and instructing me to "pull over safely. " this was the first and only warning; there were no prior indications or symptoms of any problem before this sudden failure. Immediately upon this warning, the vehicle experienced a total loss of power. The component that failed appears to be the hybrid system itself, leading to a complete electrical system shutdown. The vehicle is currently available for inspection upon request. After safely pulling over and turning off the car, all electrical functions ceased. This included essential safety features such as hazard lights, rendering the vehicle completely inoperable and "electrically dead. " my safety and the safety of other motorists were severely put at risk due to the sudden and complete loss of propulsion and all electrical systems (including safety lights) while the vehicle was in motion. This left the vehicle vulnerable and invisible to other traffic, particularly concerning if this occurred on a highway or at night, as it creates a high risk for rear-end collisions or other accidents. I have personal video documentation of this incident, which clearly shows the dashboard warnings and the vehicle's subsequent electrical failure. I am prepared to share this video upon request. Following this alarming event, I took my vehicle to the wolfchase dealership in memphis on may 16 2025. The problem has not been reproduced or confirmed by the dealership. Despite their inspection, the dealership claimed they could not find any issue, stating that "no system of record is recording such code in the vehicle. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2022 Hyundai Elantra 🔎.

While driving on the freeway at 65mph, my car suddenly displayed a "check hybrid system , stop safely" warning. The vehicle rapidly decelerated to 20mph and would not respond to acceleration, despite pressing the pedal. This created a dangerous situation for my family, as we were forced to pull over abruptly on the side of the freeway. I had to reset the battery system before the car would restart. Alarmingly, this issue happened twice on same day on [xxx]. I have since contacted the dealership and informed about the problem. The dealership (larry miller Hyundai peoria - 85382) took my car to address the issue on Feb 28th Feb 2025 and performed a hcu software update and informed me that there was a recall and assured me that the problem shouldn't happen again. However on [xxx], the same problem resurfaced. While stopped at a signal, the car once again displayed "check hybrid system , stop safely" and became unresponsive to acceleration. I had to pull over and reset the battery system to get the car moving again. This recurring issue is not only frustrating but becoming increasingly dangerous. I now drive with constant anxiety, unsure when or where the car might suddenly stop again. This ongoing safety risk is unacceptable, especially a supposed fix was applied. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Excessive oil consumption, shudder in motor while driving . Check engine light cam on. Visibility in headlights very low and high beams only working sometimes.