Hyundai Elantra sudden acceleration problems

Filed May 15, 2026 · Engine, Transmission · 76,000 miles · NC

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.

Filed May 11, 2026 · Acceleration · 30,000 miles · NY

The contact owns a 2023 Hyundai Elantra. The contact stated that while slowly pulling into the parking space the contact lifted off the brake pedal and while costing into the parking space the vehicle experienced unintended acceleration and drove over a curb. During the incident the vehicle sustained damage to the undercarriage. No injuries were reported. The vehicle was later towed to the local dealer who was unable to determine the cause of the fialure. The manufacturer was nofited of the incident. An engineer was scheduled to inspect the vehicle. No further information was available. During the incident the contact suffered emotional stress and fear. The failure mileage was 30,000.

Filed Apr 16, 2026 · Engine, Transmission · 15,000 miles · TX

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.

Filed Sep 11, 2025 · Transmission · GA

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.

Filed Sep 4, 2025 · NY · crash

I was pulling into a parking spot, moving very slowly, and the car suddenly accelerated. I’m not sure if it was the brakes only because I was slowed down and preparing to stop. I was lucky that I only went into a PVC fence and no one was injured. There was no indication of any sort of a possible problem. No one looked at it because I had no idea that that could be done, and I wouldn’t know where to go.

Filed Jul 4, 2025 · Engine, Transmission · MO

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.

Filed May 20, 2025 · Acceleration, Electrical · TX

Unintended acceleration is happening. After about 15-30 minutes of driving, accelerating from a stopped position becomes very difficult in the sense that the vehicle does NOT accelerate when gas pedal is pressed. This can be extremely dangerous as you do not know when the vehicle will no longer accelerate and could get hit when crossing an intersection or turning onto any road at all. ESC warning light came on today and vehicle will no longer start but goes into auxiliary mode. This is not the first time, second, third, nor even 5th time a report on this vehicle has been made and with each report more issues are arising with seemingly NO fix in sight.

Filed Feb 19, 2025 · Acceleration, Fuel system · MN · crash

Drove my 2015 Hyundai Elantra on the coldest day of the year to an appointment. Car was fully warmed up. Pulled into a gas station to park and was going less than 3 mph, making a left hand turn into the space. Elantra suddenly accelerated hard and the car hit a cement pole, causing extensive front end damage. If car had full insurance coverage, it would have been a write off. Hood crumpled, radiator damaged, front grill broken, bent the engine bar in half. Significant damage but the air bag did not deploy. Had to have it towed home 35 miles. Damage was in the middle of the front of the car, so I was already in the parking space. No warning lights of any sort before this happened. Very dangerous and I would never buy another Hyundai. I bought this car brand new in 2015 and have had recalls taken care of (anti theft software one). Over the course of owning this car, other odd things have occurred as well, such as white smoke coming out of the engine upon acceleration, accelerated wear on the tires due to the back end, and engine will suddenly stop for no reason while driving (this happened twice) Inferior product!

Filed Jul 25, 2024 · Transmission · 186,000 miles · PA

The contact owns a 2012 Hyundai Elantra. The contact stated that while driving at approximately 25 MPH, the vehicle jerked and suddenly experienced unintended acceleration along with the speedometer increasing. The accelerator pedal was released and the brake pedal was depressed to slow the vehicle in speed. The contact merged to the side of the road. The contact attempted to continue to drive the vehicle but the failure persisted. No warning lights illuminated. A dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 186,000.

Filed Dec 5, 2023 · Acceleration, Driver assistance · IA

When driving at 55MPH with cruise control on, the car suddenly accelerated to 75MPH, this happened on the open road and was able to keep under control. Auto has less than 10,000 miles. I will be contacting Hyundai customer service for a case number on this incident. First indication of a problem was cruise control, auto braking failed iin June of 2023. This follows a replacement of defective front radar unit by Hyundai which was replaced at 8295 miles on July 26, 2023. This problem first occurred in late June/early July of 2023. There was no warning.