2019 HYUNDAI IONIQ HYBRID Vehicle Speed Control Problems

What component or system failed or malfunctioned, and is it available for inspection upon request? Braking and acceleration control, yes How was your safety or the safety of others put at risk? The car continued to move/accelerate after depressing the brake pedal, and upon applying additional force continued to move forward, this could lead to a situation where a diver is unable to stop their car when they need to. Has the problem been reproduced or confirmed by a dealer or independent service center? No Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle was inspected by a Hyundai service center on 10/09/2025 (For a similar concern and related damage) and the event occurred on 10/12/2025 Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There was no warning lights, symptoms (other than the prior occurrence of this issue). The issue was first noticed on 10/3/2025 when the vehicle accelerated while the driver was depressing the brake and damaged the undercarraige.

What component or system failed or malfunctioned, and is it available for inspection upon request? Braking and acceleration control, yes How was your safety or the safety of others put at risk? The car continued to move/accelerate after depressing the brake pedal, and upon applying additional force continued to move forward, this could lead to a situation where a diver is unable to stop their car when they need to. Has the problem been reproduced or confirmed by a dealer or independent service center? No Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle was inspected by a Hyundai service center on 10/09/2025 (For a similar concern and related damage) and the event occurred on 10/12/2025 Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There was no warning lights, symptoms (other than the prior occurrence of this issue). The issue was first noticed on 10/3/2025 when the vehicle accelerated while the driver was depressing the brake and damaged the undercarraige.

While attempting to park and depressing the brake the car made a sudden acceleration without input and hard braking did not slow the car. The car then impacted the curb. On another occasion while stopped at a red light the car began to move forward while the break was depressed. Pressing the break with additional force did not stop the vehicle and it continued to roll forward.

While attempting to park and depressing the brake the car made a sudden acceleration without input and hard braking did not slow the car. The car then impacted the curb. On another occasion while stopped at a red light the car began to move forward while the break was depressed. Pressing the break with additional force did not stop the vehicle and it continued to roll forward.

What component of system failed or malfunctioned? Sudden deceleration, not sure what system this is a part of. Is it available for inspection upon request? No, I don't know what is causing the problem so have not been able to have the specific system looked at. How was your safety or the safety of others put at risk? I have been driving on the highway and experienced sudden deceleration of the vehicle multiple times over the past four years. Not being able to control deceleration puts me and the people around me at risk for collision. I am also at risk of being stranded far from home where assistance may not be readily available. Has the vehicle or component been inspected by the manufacturer, policy, insurance representative or others? Yes, by four separate dealerships. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Check engine light came on shortly after deceleration, battery power could then be seen at a critical low.

What component of system failed or malfunctioned? Sudden deceleration, not sure what system this is a part of. Is it available for inspection upon request? No, I don't know what is causing the problem so have not been able to have the specific system looked at. How was your safety or the safety of others put at risk? I have been driving on the highway and experienced sudden deceleration of the vehicle multiple times over the past four years. Not being able to control deceleration puts me and the people around me at risk for collision. I am also at risk of being stranded far from home where assistance may not be readily available. Has the vehicle or component been inspected by the manufacturer, policy, insurance representative or others? Yes, by four separate dealerships. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Check engine light came on shortly after deceleration, battery power could then be seen at a critical low.

The contact owns a 2019 Hyundai Ioniq Hybrid. The contact stated that while driving 72 MPH with the cruise control activated, the cruise control button became stuck, causing the vehicle to accelerate unintendedly. During the failure, the cruise control could not be disengaged using the cruise control button or while depressing the brake pedal. The contact stated that the vehicle would decelerate while depressing the brake pedal; however, after releasing the brake pedal, the vehicle would independently accelerate. The contact was able to stop the vehicle and turn off the vehicle to disengage the cruise control. The following day the failure recurred. The vehicle was taken to the local dealer who was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not yet contacted. The failure mileage was 69,000.

The contact owns a 2019 Hyundai Ioniq Hybrid. The contact stated that while driving 72 MPH with the cruise control activated, the cruise control button became stuck, causing the vehicle to accelerate unintendedly. During the failure, the cruise control could not be disengaged using the cruise control button or while depressing the brake pedal. The contact stated that the vehicle would decelerate while depressing the brake pedal; however, after releasing the brake pedal, the vehicle would independently accelerate. The contact was able to stop the vehicle and turn off the vehicle to disengage the cruise control. The following day the failure recurred. The vehicle was taken to the local dealer who was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not yet contacted. The failure mileage was 69,000.

The contact owns a 2019 Hyundai Ioniq. The contact stated that while attempting to park into her son's parking pad, the vehicle independently accelerated reverse while in the reverse(R) position. The vehicle initially hit a gutter on the side of the house; as the vehicle continued to accelerate, the contact forcefully depressed the brake pedal but to no avail. The vehicle continued to accelerate in reverse as it hit a porch column which swung the vehicle around and off the parking pad. The vehicle then hit a tree as she stood up on the brake pedal which finally stopped the acceleration. The contact immediately placed the vehicle into park and exited the vehicle. Once the acceleration stopped, her son parked the vehicle and informed her that several warning lights and warning chimes had sounded as he parked the vehicle. The contact sustained minor soreness and emotional trauma as a result of the failure but did not seek medical attention. A police report was not filed and the vehicle had yet to be towed. Her son's porch column and downspout gutter were damaged as a result of the failure. The manufacturer was notified about the failure and informed her that there were no recalls on her vehicle. The vehicle had yet to be diagnosed or repaired. The failure mileage was approximately 33,500.

The contact owns a 2019 Hyundai Ioniq. The contact stated that while attempting to park into her son's parking pad, the vehicle independently accelerated reverse while in the reverse(R) position. The vehicle initially hit a gutter on the side of the house; as the vehicle continued to accelerate, the contact forcefully depressed the brake pedal but to no avail. The vehicle continued to accelerate in reverse as it hit a porch column which swung the vehicle around and off the parking pad. The vehicle then hit a tree as she stood up on the brake pedal which finally stopped the acceleration. The contact immediately placed the vehicle into park and exited the vehicle. Once the acceleration stopped, her son parked the vehicle and informed her that several warning lights and warning chimes had sounded as he parked the vehicle. The contact sustained minor soreness and emotional trauma as a result of the failure but did not seek medical attention. A police report was not filed and the vehicle had yet to be towed. Her son's porch column and downspout gutter were damaged as a result of the failure. The manufacturer was notified about the failure and informed her that there were no recalls on her vehicle. The vehicle had yet to be diagnosed or repaired. The failure mileage was approximately 33,500.

One morning, my father turned on the car. It was still in Park. He and my mom heard a noise, as if my dad was pushing on the gas pedal, but he was not. They turned off the car, turned it on again, and everything seemed fine. After driving for a bit, my father was back home and parking the car. Because of the way the parking lot is, you have to go slowly, less than 10 miles an hour, pushing on the gas a little to go up and incline and then turn right to slide into the parking spot as you break to finally park. As he was pulling into the parking spot, the car suddenly accelerated uncontrollably, and crashed hard into the building ahead. It broke pieces of the building, and the entire front of the car is totaled. My parents saw fire under the hood and my mom suffered a hand injury. They are otherwise unharmed. I know Unintended Sudden Acceleration was an issue with Ioniq EVs from 2019. It looks like it is happening to the hybrids as well. Thank you for looking into it.

One morning, my father turned on the car. It was still in Park. He and my mom heard a noise, as if my dad was pushing on the gas pedal, but he was not. They turned off the car, turned it on again, and everything seemed fine. After driving for a bit, my father was back home and parking the car. Because of the way the parking lot is, you have to go slowly, less than 10 miles an hour, pushing on the gas a little to go up and incline and then turn right to slide into the parking spot as you break to finally park. As he was pulling into the parking spot, the car suddenly accelerated uncontrollably, and crashed hard into the building ahead. It broke pieces of the building, and the entire front of the car is totaled. My parents saw fire under the hood and my mom suffered a hand injury. They are otherwise unharmed. I know Unintended Sudden Acceleration was an issue with Ioniq EVs from 2019. It looks like it is happening to the hybrids as well. Thank you for looking into it.