Owner-reported complaints naming the driver-assistance system, filed with NHTSA
Data refreshed
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems. Every record below is an owner-reported complaint about the 2021 Hyundai Elantra Hybrid submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 13 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Shown in the owner’s own words, exactly as filed
At around 93k miles my HECU unit apparently malfunctioned at the same time as the left front tire speed indicator. All of my safety features ABS, adaptive cruise control, lane departure, lane keeping etc do not work because of this.
When gas is pressed (even to floor) in drive, vehicle stalls, does not accelerate. Then vehicle jerks into propulsion after revving. Other instances, at deceleration the car will jerk and shake to a stop. I have mentioned the problem at every scheduled maintenance
I was driving on the Highway at the posted speed limit when the warning "Check Forward Safety System" came up and remained on my dashboard. The cruise control stopped working also. The light remained on even after stopping and starting the car and has remained on ever since. I have never been in an accident nor has my computer system reported any collision. My Hyundai Blue Link app gives me the following DTC: C162078. It started on [XXX]. My collision detection system does not appear to be working at all and my cruise control no longer works. I'm very concerned about it malfunctioning based on other entries on the nhtsa.gov website. I took the car to Hyundai Service Center and they are trying to convince me this is due to a collision and warranty will not be covering it. They tried to charge me for diagnostic even though I already had the error code on the Hyundai BlueLink App. They confirmed that my computer has zero reports of any collisions. The service tech said, and I'm quoting, "The system is very sensitive and a swift kick could cause it to malfunction." That sounds like a manufacturing defect to me. I have never been in an accident with this car, there is zero visible damage to the front bumper, and my computer has no report of an accident. The dealership urged me to contact insurance. My Major Insurance Company told me this was absurd, would never be approved, and is clearly mechanical. They also mentioned anecdotally that this problem has been coming up a lot for them with modern Hyundai models. Then I called Hyundai Corporate and they have escalated the issue, agree it sounds mechanical, and will be contacting me in 3-5 business days. They apologized profusely so I am still holding out hope for warranty coverage. I believe the dealership is trying to blame me for this mechanical failure to avoid expense on their end. I have had many software-related issues with this car. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I was driving on a 40mph speed road at 45 mph and the car stopped accelerating abruptly and remained stuck at 20 mph even thou my foot was on the gas pedal. I had to put the caution lights on and get to the side of the road. I had every car behind me honk and yell when passing by. This could have been a big crash. I have the video of this when I was driving. This happened various times, in December, Feb and last week.
On a few occasions (3?) the cars’ automatic emergency braking feature activated while driving at both highway and normal speeds. On none of the occasions was there inclement weather or a “slick” condition on the road. The feature would activate, give a visual and audible warning, and then de-activate within a few seconds. When the feature activated, I felt the car jerk a bit to slow down, and sort of swerve in one direction before righting itself. There is a possibility that the feature activated because I had manually enabled the Auto Hold feature as well which I usually do.
Car will accelerate when pressing on brakes. Once car is able to turn off, the problem does not repeat. This has occurred at least 3 times with the same car and random times while on the road. Dealership is unable to replicate the brake issue every time the car is brought in.
Sometimes upon depressing the accelerator the engine does not respond. The car does not move in a traffic situation. Putting the car in park, shutting it down and restarting makes it go away for a while. Getting on and off the highway is especially dangerous. This has happened intermittently for the past 1-1/2 years. The dealer says that they cannot reproduce the problem. So, they cannot repair it.
While driving in stop and go traffic this morning (02/06/2023), at approximately 8:45 am, my Hyundai Elantra began accelerating on it's own. I applied the brakes and the car behaved as though I slammed on the brakes. The acceleration and braking issues happened multiple times during this drive. After the first incident, I shifted the car into neutral, (when it happened subsequently) until it quit accelerating, which was a couple of seconds. I have scheduled service at the Hyundai dealer for tomorrow morning (02/27/2023)
The contact owns a 2021 Hyundai Elantra Hybrid. The contact stated that on multiple occasions while the vehicle was idling, right before releasing the brake pedal, the vehicle did not immediately accelerate forward while depressing the accelerator pedal. Additionally, while driving at various speeds, the vehicle experienced unintended acceleration. After stopping and turning off and restarting the vehicle the failure was self-corrected. The vehicle was taken to the local dealer who was unable to duplicate the failure or detect the cause of the failure. The manufacturer was also notified of the failure, but no assistance was offered. The failure mileage was 2,000.
Our problem started a few months ago. At first, we thought it was just a fluke, but this issue has happened too many times to be so. The issues are, the car does not accelerate when we depress the accelerator, we see the tachometer move, but the engine is not actually accelerating. Then at times it will accelerate on it's own, while sitting at a red light, the car tries to move forward despite having our foot on the brake, it acts like we are trying to push the accelerator and the brake at the same time. Even worse, while driving, the car will go into accident-avoidance mode, even though there is nothing in front of us. There are no errors or codes populating on the dash.
The contact owns a 2021 Hyundai Elantra. The contact stated that while slowing down and making a left or right turn, the vehicle independently accelerated. The contact also stated that while at a stop, he depressed the accelerator pedal and the vehicle accelerated at an abnormal speed. The contact stated that he applied extra pressure to the brake pedal to stop the vehicle. No warning light was illuminated. The vehicle was not diagnosed or repaired. The dealer was not notified of the failure. The manufacturer was notified of the failure, but the contact had not yet received a response. The failure mileage was approximately 15,000.
The contact owns a 2021 Hyundai Elantra. The contact stated that on several occasions while decelerating, the vehicle would lunge forward and the engine would rev. The contact stated that the vehicle would shut off while stopped. No warning lights were illuminated. The vehicle was taken to the dealer where the failure was not determined. The contact stated that the vehicle was taken to the dealer three times where the failure was not determined. The failure recurred for the fourth time. The contact was awaiting a tow to the dealer Fitzgerald Countryside Hyundai. The manufacturer was notified of the failure and a case was opened. The failure mileage was 19,651.
The contact owns a 2021 Hyundai Elantra. The contact stated that while pulling into the driveway, while slowing down, the vehicle inadvertently lunged forward. The vehicle seemed as though it was attempting to accelerate forward. The contact had to depress the brake pedal with excessive force to keep the vehicle from moving forward. The failure was independently remedied, and the vehicle started to perform as designed. The contact stated that failure occurred on three different occasions. The contact took the vehicle to the dealer however, the mechanic was unable to find a cause for the failure. The dealer informed the contact that they were aware of other vehicle owners experiencing the same failure with similar vehicles. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 3,300.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
Data on this page last refreshed .