Hyundai Ioniq Complaints (2020)

31 consumer complaints on file.

#11771228October 14, 2026
UNKNOWN OR OTHER
Backup camera quality has greatly degraded. Can barely make out what is behind you with camera. Afraid will hit something.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11766142September 22, 2026
ENGINE
The engine coolant can leak into the exhaust because air a known design flaw. When the the engine turns on after being in electric mode the coolant pump starts and pushes it out the exhaust causing a sudden over heating of the engine. This causes the car to stall and can be very dangerous at freeway speeds.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11737339May 12, 2026
STEERING, ELECTRICAL SYSTEM, POWER TRAIN
While attempting a slow right turn from a complete stop at an intersection, I heard a loud thunk sound followed by an immediate loss of power steering response. The steering wheel spun freely with little resistance while the front tires did not respond proportionally. I was able to safely pull over. Upon restarting the vehicle it produced an abnormal wheezing sound suggesting additional mechanical stress. At the time of the failure the vehicle had approximately 40,000 miles, which I believe represents a premature failure for a safety-critical steering component. The vehicle was brought to a Hyundai dealership for inspection. The dealer pulled diagnostic fault codes, found none, performed a 20-minute test drive, and returned the vehicle stating they could not find anything wrong. No physical inspection of the steering components was performed. The failure condition — a slow full-lock turn from a complete stop — was never specifically replicated during the dealer's test drive. The problem has not been confirmed or repaired by the dealer. The vehicle is available for inspection. My safety and the safety of other drivers was put at risk by the sudden and unexpected loss of steering control. No warning lights appeared prior to or during the failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728257March 31, 2026
ELECTRICAL SYSTEM
The charge controller failed twice and one of the times I was out on a dangerous road where there wasn’t a safe spot to pull over. It was very sketchy.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714201January 29, 2026
UNKNOWN OR OTHER
The horn on my 2020 Hyundai Ioniq has stopped working. I checked the fuses and they are all good. Hyundai currently has several other models with recalls or at least known to fail. Yes my vehicle is available for inspection and no I have not had it looked at yet… dealer wants to keep it for 3-5 days to diagnose and further, given the nature of the issue, I don’t feel I should be responsible for any fees involved in doing so. It poses me a major safety concern as I cannot warn other cars of potential collision etc. Unfortunately, this problem does not have any type of warning message to let you know. I had to find out by trying to use my horn when someone almost hit me. This appears to me as a Hyundai manufacturing issue that also affects the Ionic line.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11709810January 8, 2026
POWER TRAIN
When the engine is turned off, and the car is not in park, it rolls. When the engine is turned off the car should automatically switch to P to prevent it from rolling. Our car was left in R with the engine off. And instead of switching to P automatically, it just rolled away and hit the neighbors garage.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11682318August 22, 2025
UNKNOWN OR OTHER
See attached document for complaint
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11675641July 23, 2025
POWER TRAIN
The contact owns a 2020 Hyundai Ioniq Hybrid. The contact stated that while idle, releasing the brake and pressing the accelerator, the vehicle would jolt forward before accelerating. The failure would occur intermittently and had become progressively more pronounced. There were no warning lights illuminated. During the most recent occasion, the vehicle jolted forward so aggressively that it caused the contact to have whiplash. The contact had to refrain from work due to the whiplash symptoms sustained, such as neck pain and nausea. The vehicle was taken to the dealer twice, and the dealer was not able to diagnose the cause of the failure. The dealer was able to experience the failure described when inspecting the vehicle. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed the vehicle was not covered under warranty or recall. The manufacturer filed a complaint. The failure mileage was approximately 60,000.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11652755April 4, 2025
ELECTRICAL SYSTEM
The contact owns a 2020 Hyundai Ioniq. The contact stated that while driving at undisclosed speeds, the vehicle stalled. No warning lights were illuminated. The contact was able to restart the vehicle. The vehicle was taken to the dealer where it was diagnosed and determined that the battery had overheated. The vehicle was not repaired. The contact stated that on a separate occasion, while driving at undisclosed speeds, the vehicle stalled. No warning lights were illuminated. The vehicle was taken back to the dealer; however, no cause for the failure was found. The contact stated that on the way home, there was an abnormal ticking sound was coming from the vehicle. The contact stated that the electrical system on the vehicle had failed, and the doors and the trunk failed to open. No warning lights were illuminated. The vehicle was taken to the dealer; however, the contact was unsure if the vehicle was repaired. The vehicle remained at the dealer and had not been driven since the failure. The manufacturer was notified of the failure. The failure mileage was approximately 22,400.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650058March 24, 2025
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I leased the vehicle in 03-2021 and within the first year took the car back to the dealer 3 times for complaint on braking system. The brake pedal would loose pressure and stopping distance would extend further than anticipated. the dealer consistently told me that they could not duplicate the problem. now has gotten to the point that EBP light and HOLD light stay on steady and red Brake light flashes, due to this the smart cruise control and crash avoidance system become inoperable. Recently became aware that this issue is known to Hyundai and they have TSB for this issue, TSB # 23-BR-001H which describes the problem with rear caliper harness contamination with moisture. now that my vehicle has passed the 36K miles warranty, dealer wants to charge about $2000 for repairs. Currently have 39685 miles on the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648730March 17, 2025
UNKNOWN OR OTHER
Car has two horns, both STOPPED working completely about 2 1/2 years ago and were replaced by the Hyundai dealer in Florence, SC. High pitch horn failed again about 1 year ago, and low pitch horn has now failed. Local Hyundai dealership in Pensacola, FL npow wants $800 to replace what should be fully covered. Car now has 75,00 miles so they say it us out of warrenty. But, a safety issue on a known problem (per Hydai frum on line and personal experience) should be fully covered by Hyundai.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11634881January 8, 2025
FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
When approaching a turn, I let off the accelerator but the car didn’t stop accelerating. Instead, it gently kept accelerating. I applied the brakes and the car started slowing down but not at the same rate I was applying brake pressure. Therefore I floored the brakes to try coming to a complete stop. Sadly, the cars ABS system did not engage, half of the car hopped over the curb at about 20 mph. I was able to steer the car back onto the road where it finally came to a stop but acted like it wanted to keep going until full blackout power loss happened. The car was deemed a total loss by my insurance company American Family. Essentially, the vehicle malfunctioned causing the accelerator to stick which caused the car to be harder to control than designed. The car malfunctioned by not engaging the ABS system as well. There is a recall on this exact problem for the 2017-2019 model but not for my 2020 even though it was manufactured during that campaign. It all happened very quickly and I was very lucky this did not involve another vehicle.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11597774June 30, 2024
SERVICE BRAKES
The Hyundai Ioniq was designed with a dual clutch system for the electric motor and gas motor. This was done to disengage and engage either separately when necessary for low power, regen braking, etc. However, this design heavily impacts the behavior of the brakes and safety of the vehicle overall. When the brakes are applied, the ECU will turn off the gas engine to conserve gas in regen braking mode. Additionally, the ECU will downshift the transmission. Downshifting the transmission and disengaging the gas engine become an issue because conducting both actions removes significant resistance in braking. Causing the vehicle to lurch when the downshift occurs while also increasing stopping distance. This downshift can be felt when braking as both loss of brake power and vehicle lurch. The system also does not account for this brake power loss by increasing brake booster response.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11597208June 27, 2024
VISIBILITY/WIPER
The display does not always show reverse camera when backing up. Not often, but does occur. I can use mirrors, etc. Annoying as it is a learned experience with this car, and when reverse camera is not operational it does limit view behind car due to design. I did capture video this time as it isn't first occurrence. I was in parking lot where I could do this without endangering anyone.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11551859October 25, 2023
EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:SPEED CONTROL, LANE DEPARTURE: LANE KEEP: AUTOMATIC STEERING
The contact owns a 2020 Hyundai Ioniq. The contact stated that while driving 70 MPH with the adaptive cruise control and lane keep assist features activated, the check engine warning light suddenly illuminated and the steering wheel seized causing the driver to lose control of the steering and the vehicle crashed into a concrete barrier. After restarting the vehicle, the check engine warning light was no longer illuminated and the vehicle operated as normal. No injuries were reported and no police report was taken. The cause of the failure was not determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 37,859.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11526534June 12, 2023
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
***2020 HYUNDAI IONIQ TURNS ITSELF ON, WITHOUT HUMAN ASSISTANCE OR MODERATION. HUMAN DOES NOT NEED TO BE IN THE CAR FOR THIS TO HAPPEN, MEANING IT COULD OCCUR 24/7, SANS DRIVER, AND IS A SAFETY ISSUE.*** *Months of random electrical odd events. Example: the car does not know it’s off or Not shifting correctly *June 6, 2023 - 8am - I entered the car and got settled. The steering wheel is locked…it was not like that the last time I was in the car. I turned the car on, shifted to reverse, and the steering wheel remained locked. I couldn’t fix it so I decided to get out of the car and call for service. *June 6 2023 - Attempting to leave the car. Put the car in park, set the parking break, turned car off, and opened door to get out. When my left foot touched the pavement the Ioniq turn itself back on. I thought I had messed up but nope. I took several videos. I could not leave the car bc it would NOT STAY SHUT OFF. *June 6, 2023 - Called Hyundai service. They could do nothing but had service drivers out and I would get a call back, meantime I had to stay inside the running car. I kept trying the ignition button to get it to stay off. FINALLY randomly unlocked the steering wheel so I drove to the service center. *June 6, 2023 - Hyundai has had my car for 7 days without being officially written up and service started. I cannot get an update from them and have no loaner. I will be taking an UBER there tomorrow to check in person.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11525179June 3, 2023
ENGINE
Refill Coolant warning light intermittently signals EV battery coolant problem. Hyundai dealer in Fort Wayne, IN, topped off coolant. Andrew service representative was informed of two YouTube videos explaining recall due to defective coolant ASC1 that crystalizes and/or becomes sludgy. Video reported dealer changed old coolant with an upgraded coolant ASC2 number in a Hyundai Ioniq Limited 2020 Electric Vehicle 38 kw like my vehicle. Fort Wayne, Glenbrook Hyundai dealer has very little experience or training with EV vehicles, since they offered to change the engine oil. https://www.youtube.com/watch?v=CUs-YoGTMlw https://www.youtube.com/watch?v=cCt6MEbaXCI are video links apparently from England due to British accent and Chippenham city mentioned in video. USA NHTSA should add this recall to USA Hyundai Ioniq 2020 38 kv EV's. Defective coolant could cause EV battery failure and potential fire due to overheating and electrical short circuits. The Refill Coolant warning light goes off indicating coolant is sufficient, even when no additional coolant was added.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11523893May 25, 2023
SERVICE BRAKES
the Hyundai ioniq 5 doesn't turn on its brake lights when you're using single-pedal driving, as shown in this youtube video: https://youtu.be/U0YW7x9U5TQ?t=97 these should be recalled because you can bring the vehicle to a complete stop without the brakes turning on
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11514129March 28, 2023
STRUCTURE:BODY
The contact owns a 2020 Hyundai Ioniq. The contact stated that while driving approximately 35 MPH a sudden booming sound occurred near the front passenger’s side of the vehicle. After stopping to inspect the vehicle it was discovered that the front driver’s side wheel well and bumper dislodged and was rubbing against the front passenger’s side wheel. The contact was able to adjust the damaged body part from rubbing against the wheel and continued to drive the vehicle. The cause of the failure was not yet determined. The local dealer and manufacturer were not yet notified of the failure. The failure mileage was 46,650.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11504345January 30, 2023
LANE DEPARTURE: ASSIST
The lane departure keep system has a major firmware bug. When the car is moving along a sweeping right hand turn from the farthest left lane, the vehicle senses that the car is going to cross the lane line to the right and jerks the steering wheel back towards dead center. This throws the vehicle towards the left hand curb. The driver must react quickly to jerk the wheel back to the proper position. This takes a reasonable amount of force that not all drivers may possess. Hyundai dealer service technicians are aware of this issue but can only "detune" the system to make it slightly less sensitive.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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