2017 Hyundai Elantra: hesitation when accelerating

Filed Apr 22, 2026 · Acceleration, Electrical · CO

I own a Hyundai Elantra with approximately 103,000 miles. The vehicle has developed an intermittent issue where the engine will suddenly stall while driving. This most often occurs when I am decelerating and turning, such as when entering or navigating roundabouts. At the time of the stall, multiple warning indicators appear simultaneously, including the check engine light, battery warning light, and a “no key detected” message. There are no prior warning signs before the failure occurs—no unusual noises, no loss of power leading up to the event, and no dashboard warnings in advance. The stall is sudden and unexpected. When the vehicle stalls, I must quickly shift into park and restart the engine. The car restarts immediately without hesitation, and all warning lights disappear. The vehicle then operates normally again until the issue randomly reoccurs. This has happened multiple times. This issue creates a safety risk because the vehicle loses power unexpectedly while in motion, particularly during low-speed turns and in roundabouts, which could increase the risk of a collision due to sudden loss of propulsion and reduced control. The problem has not yet been formally diagnosed by a dealer or independent repair shop, but based on research and similar reported cases, it may be related to an intermittent engine or electrical signal failure. The issue has not yet been inspected by the manufacturer, police, or insurance representatives. UNKNOWN as to the exact failed component, but the failure appears to involve a sudden loss of engine operation without warning, followed by immediate recovery upon restart.

Filed Jan 23, 2026 · Electrical, Engine · PA

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.

Filed Dec 12, 2025 · Engine · 99,112 miles · CA

The contact owns 2017 Hyundai Elantra. The contact stated while driving 20 MPH and depressing the accelerator pedal, the vehicle hesitated and stalled. The check engine warning light and the low coolant level warning light were illuminated. The contact stated that a bystander assisted in pushing the vehicle into a parking lot. The vehicle was towed to the dealer, where it was diagnosed and determined that the camshaft needed to be replaced. Additionally, the dealer diagnosed that the Continuously Variable Valve Timing (CVVT) and the timing chain needed to be replaced. The vehicle was not repaired. The contact related the failure to the federal safety agency Campaign Number: 21V727000 (Engine); however, the model of the vehicle was not included in the recall. The dealer notified the manufacturer of the failure and was informed that the cost of the repair would not be covered because the VIN was not included in the recall. The failure mileage was 99,112.

Filed Feb 20, 2024 · Engine · TX

The Issue started back in December of 2023.The Engine failed while driving to Lake Worth, TX. Vehicle Information: Model is a 2017 Hyundai Elantra Limited 2.0 Engine, US Built. Mileage during the1st incident was at 100,125 miles and the VIN Number is [XXX] . I was on a Maintenance plan the first 2 years with Clay Cooley Hyundai of Dallas with Dealership Warranty when I first purchased the vehicle back in 2017 so I kept up maint.Stalling began & was making a significant tapping noise.Dgnstcs were performed and I initially got Misfire codes P0303, P0300 &P0301. Ignition coils and sprk plugs were observed and replaced. Instantly following I ran another diagnostic and began receiving Camshaft codes P011.The VVT Solenoids were also replaced and this still did not resolve the issue. I was losing oil after every oil change and the oil was not lubricating the engine. I then took to a local shop and they said engine was beyond repair and had it towed to dealership. loud knocking noise from the engine that increases in frequency as the engine rpm increases. Then there is Reduced power and/or hesitation and vibration. With these issues the Illumination of the “check engine and Engine Oil Pressure” light come on in the instrument cluster. Safety Concerns: Stalling and Shutting off of the engine while driving at accelerated speeds is a Dangerous Manufacturing issue that could have resulted in a major car crash not only jeopardizing our safety but the safety of other drivers. Similar Incidents: There have been several reports and forums that we have read that report the same issues with their Elantras. Impact on You: This has impacted me Tremendously as the Dealership states that they cannot assist with the Damages and that I would have to come of pocket by paying over $8,000 to replace the engine. Financially this is beyond my means in what I can afford and stalls my primary source of transportation for commuting back and forth to work, taking care of day to day priorities. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFO

Filed May 14, 2023 · Engine · VA

Ignition Coil Failure on 2017 Hyundai Elantra with just over 29,000 miles. Engine misfiring, jerking, idling roughly, and hesitating while accelerating, along with the Check Engine Light turning on. On-board diagnostic tool generated a P0-301 Diagnostic Trouble Code - indicating that cylinder number 1 experiencing misfires. Took my car to dealer for repair. Ignition coil and software updated pursuant to Hyundai TSB # 20-FL-001H. Cost $321.46. Hyundai would not pay for all/part of the repair because car is beyond the 5 year/60,000 mile warranty, despite this being a safety issue they acknowledged by issuing the TSB to address the replacement of the defective ignition coils. Hyundai previously issued safety recall on 2106 Sonata models related to a similar defective ignition coil issue. See Hyundai TSB # 16-01-003-1. Ignition coils are expected to last at least 100,000 miles. The premature failure of this part, as evidenced by the 2016 recall, and the 2020 TSB, poses an unreasonable safety risk to the public. Imagine the safety issues while traveling on a roadway with your car misfiring, jerking, or lacking power when accelerating, or stalling.

Filed Aug 15, 2022 · Electrical, Engine · 44,000 miles · OR · crash · 1 injury

The contact owned a 2017 Hyundai Elantra. The contact stated while driving approximately 45 MPH, the fuel warning light flickered and the radio activated and deactivated independently. The vehicle was taken to a dealer where it was determined that the vehicle was performing as designed due to a satellite not being connected. On another occasion, the vehicle accelerated on its own and the brake pedal hesitated to respond. The contact depressed the brake pedal to the floorboard in order for the vehicle to come to a stop. The vehicle was taken to another dealer due to the above failures; in addition to shuttering and jerking while depressing on the accelerator, as if it was not receiving fuel. The vehicle was not repaired. The contact did a private diagnosis which indicated electrical system malfunction. The contact was informed to start using a halo battery charger to jump the vehicle. The contact then stated while driving at approximately 40 MPH at night, the vehicle started accelerating inadvertently, and she then turned on high beams for better visibility to pull over safely; however, they failed. The contact then pulled her emergency brakes and ended in a ditch. All air bags deployed. The contacts phone and alert device did not operate. The contact was able to call her son, who called 911. The police, fire, and paramedics arrived on the scene. The fire department cut the contact out of the destroyed vehicle. There were no medical treatments on the scene. The contact was transported to the hospital. The entire driver's side of the vehicle from the front end to the back rear and the entire front of the vehicle was destroyed. The contact experienced a bad concussion and blacked out. The vehicle was towed to the wrecking yard. The manufacturer was notified of the failure. The approximate failure mileage was 44,000.

Filed Mar 2, 2022 · Electrical, Engine · KY

My Hyundai Elantra 2017 died while driving on the highway. Started with hesitation when accelerated and died on the highway. The vehicle would not restart

Filed Mar 1, 2022 · Engine, Fuel system · KY

While driving on highway the vehicle quit running and would not restart. It seemed it lost power prior to completely dying. Check engine light came on when starting and had some hesitation but started then once on highway stalled out. Paint is also coming off hood color is Pearl White

Filed Nov 24, 2021 · Engine, Fuel system · 60,000 miles · MD

The contact owns a 2017 Hyundai Elantra. The contact stated that while operating the vehicle, the check engine warning light would remain illuminated. The contact stated that the vehicle would jerk and hesitate and experience unintended acceleration. The vehicle was taken to the local dealer who diagnosed that the fuel injectors were faulty. The vehicle was not yet repaired. The manufacturer was contacted regarding the failure, but no assistance was offered. The approximate failure mileage was 60,000.

Filed Nov 13, 2021 · Engine · NY

Abbreviated. Full description in files. Since July 2021, I have had intermittent issues with my 2017 Hyundai Elantra. When trying to accelerate, the car would struggle to move and feel like it was about to stall. The engine light would come on any time I would step on the gas. It was a danger should my car refused to accelerate while making a turn, merge, etc. On 8/31, I brought my car to Healey Hyundai. However, Healey could not fix the car, as the error codes were not in the car. On 9/6 I was able to drive to Healey Hyundai within the same day of the issue. The error code, a misfire on cylinder 2. On 9/16, Hyundai Motor Corp recognized there was a premature failure of the ignition coil on cylinder 2. A warranty repair was done to replace the ignition coil. Once fixed, a representative from Healey Hyundai acknowledge they had seen this issue before. They went so far as to warn me that the other ignition coils could go at any time. On 9/27 at 11 am, the issue occurred again and worse than I ever experienced it. The engine light turned on and my car struggled to move. For 15 minutes until I was able to safely stop. Once off, the light went away, and it appeared to operate normally. On 9/28 at 1 pm, I brought the car to Healey Hyundai again. It was 26 hours, 30 miles, and 4 starts since the issue occurred. However, the error codes were again missing from the car. Healey Hyundai was not able to reproduce. And while I have felt the car shutter and hesitate since, it is not enough for the engine light to turn on. The original ignition coils installed in the car are faulty. They overheat during normal use causing them to melt and warp. It also explains why the issue has decreased as the weather cools. Also alarming is the excessively short period of time error codes are stored in the computer. It is a matter of time till my car fails again and I am afraid for my safety when it does.

Filed May 13, 2021 · Engine · 60,000 miles · IA

Tl* the contact called on behalf of his daughter who owned a 2017 hyundai elantra. The contact stated that while driving approximately 20 MPH and coming to a stop, the vehicle loss motive power. The vehicle was restarted. There was no warning light illuminated. The vehicle was taken to stew hansen hyundai (11344 hickman rd, clive, ia 50325) who replaced the battery and reprogrammed the ecu. The failure recurred with the vehicle hesitating. The manufacturer was made aware of the failure and opened a case. The approximate failure mileage was 60,000.

Filed May 8, 2021 · Engine, Fuel system · 70,000 miles · WA

A few months after getting the car the engine kept stalling the engine light would only turn on after stalling each time I have brought it to multiple hyundai dealerships they keep saying it's just a spark plug issue. It's frustrating since once off the lot a week later it's randomly stalling again.this never fixed the issue. The car has stalled both on roads, roundabouts and freeways causing me to nearly be in crashes multiple times, I do not feel safe driving this car. The car is in motion and the engine just stops the car stalls and then the engine light comes on. I had been able to start it and get it moving it's random when the engine stalls.today I took it to another car repair center they said the engine had a ton of metal particles and chunks, like the engines on the 2014 elantra's. They suggested I file a report to the federal safety agency and bring it to the dealership as there is no way a engine or piston should look this bad and that the metal pieces look like they are from the manufacturing process. I'm not sure why the dealerships never checked the engine completely regarding this issue they could have seen the metal fragments earlier. I'm worried that I won't be lucky on the road next time the engine stalls and I'm worried about others having the same issue.I'm worried about my safety and others when driving. Please do not hesitate to contact me regarding more information.