HYUNDAI IONIQ HYBRID · model year

2020 HYUNDAI IONIQ HYBRID

23 NHTSA complaints, 4 crash reports for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2020HYUNDAIIONIQ HYBRID carries 23 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 4 crashes, 1 fire, 1 injury, and 0 fatalities. For crash performance, NHTSA's New Car Assessment Program gave this cohort an overall Not Rated/5 rating, with Not Rated/5 front crash, Not Rated/5 side crash, and Not Rated/5 rollover scores derived from standardized barrier and dynamic tests.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2020 IONIQ HYBRID is unknown or other with 7 filings, followed by electrical system (4) and structure:body (3). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 37 investigation files overlapping the 2020 IONIQ HYBRID, and 1 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

23
Complaints
4
Crashes
1
Fires
1
Injuries
0
Deaths

Total Complaints

23 filings

Crashes Reported

4 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

NHTSA NCAP overall: Not Rated/5 — Not rated · Front: Not Rated/5 · Side: Not Rated/5 · Rollover: Not Rated/5

Complaints by Component

ComponentCount
UNKNOWN OR OTHER7
ELECTRICAL SYSTEM4
STRUCTURE:BODY3
SERVICE BRAKES2
ELECTRONIC STABILITY CONTROL (ESC)1
VEHICLE SPEED CONTROL1
FUEL/PROPULSION SYSTEM1
LANE DEPARTURE: ASSIST1
EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:SPEED CONTROL1
LANE DEPARTURE: LANE KEEP: AUTOMATIC STEERING1
POWER TRAIN1

Recent Complaints

20260129UNKNOWN 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.

20250822FireUNKNOWN OR OTHER

See attached document for complaint

20250723POWER 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.

Mileage: 60,000

20250317UNKNOWN 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.

20240630CrashSERVICE 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.

20231025CrashEQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:SPEED CONTROL

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.

Mileage: 37,859

20231025CrashLANE 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.

Mileage: 37,859

20230612ELECTRICAL SYSTEM

***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 ha

20230612UNKNOWN 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 ha

20230328STRUCTURE: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.

Mileage: 46,650

20230130LANE 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.

20221010ELECTRICAL SYSTEM

While on cruise control when climbing a hill, a warning appears telling me that the EV has failed and that I should stop driving the vehicle. At the time the warning appears the cruise control shuts off and the car slow dramatically. All 5 times this has happened the vehicles behind me have had to slam on their brakes in order to avoid running me over. Once it was a triaxle dump truck, fully loaded, he went off the right side of the road and almost hit the guardrails to avoid the collision. The car has been tested at our dealership (Jenkins Hyundai) and they have confirmed the issue.

20221010VEHICLE SPEED CONTROL

While on cruise control when climbing a hill, a warning appears telling me that the EV has failed and that I should stop driving the vehicle. At the time the warning appears the cruise control shuts off and the car slow dramatically. All 5 times this has happened the vehicles behind me have had to slam on their brakes in order to avoid running me over. Once it was a triaxle dump truck, fully loaded, he went off the right side of the road and almost hit the guardrails to avoid the collision. The car has been tested at our dealership (Jenkins Hyundai) and they have confirmed the issue.

20221010FUEL/PROPULSION SYSTEM

While on cruise control when climbing a hill, a warning appears telling me that the EV has failed and that I should stop driving the vehicle. At the time the warning appears the cruise control shuts off and the car slow dramatically. All 5 times this has happened the vehicles behind me have had to slam on their brakes in order to avoid running me over. Once it was a triaxle dump truck, fully loaded, he went off the right side of the road and almost hit the guardrails to avoid the collision. The car has been tested at our dealership (Jenkins Hyundai) and they have confirmed the issue.

20220225ELECTRICAL SYSTEM

My horn failed and was replaced in March of 2021. It stopped working again in January of 2022. The dealer replaced the horn the first time and another horn is on order with an unknown date of when the part will be available. This is a safety concern for me. I drive in the country and many deer run in the road. There has also been an incident where a child ran infront of my car while in my home city. Not having a horn poses a risk to me and others. I would not expect a car that is less than 2 years old to have a horn go out twice. I have driven 50 years and have never had a horn break. There was no warning prior to horn failure nor do I know how long the horn was broke.

20220225UNKNOWN OR OTHER

My horn failed and was replaced in March of 2021. It stopped working again in January of 2022. The dealer replaced the horn the first time and another horn is on order with an unknown date of when the part will be available. This is a safety concern for me. I drive in the country and many deer run in the road. There has also been an incident where a child ran infront of my car while in my home city. Not having a horn poses a risk to me and others. I would not expect a car that is less than 2 years old to have a horn go out twice. I have driven 50 years and have never had a horn break. There was no warning prior to horn failure nor do I know how long the horn was broke.

20211009STRUCTURE:BODY

Received this code from the car: DTC C223986 DTC System CHASSIS DTC Sub System LKAS But NO ONE can tell me what it means...

20211009UNKNOWN OR OTHER

Received this code from the car: DTC C223986 DTC System CHASSIS DTC Sub System LKAS But NO ONE can tell me what it means...

20210614CrashUNKNOWN OR OTHER

On June 10, 2021, when driving from Topeka, KS to Park Ridge, IL, there was a failure in both the Adaptive Cruse Control System as well as the Lane Keeping Assistance System. The ACC system started the car moving forward from a complete stop without my intent and the LKA turned the car to the right striking a semi trailer that was completely stopped. Additionally there was no warning from the Forward Collision Warning system

20210316STRUCTURE:BODY

GLASS SPONTANEOUSLY CRACKED

Mileage: 3,000

Compare 2020HYUNDAIIONIQ HYBRID to Similar Vehicles

NHTSA Investigations 1 Open

View all investigations

Frequently Asked Questions

How many complaints does the 2020 HYUNDAI IONIQ HYBRID have?
The 2020 HYUNDAI IONIQ HYBRID has 23 NHTSA complaints, 4 crashes, 1 fires, 1 injuries, and 0 deaths reported.
What is the safety rating for the 2020 HYUNDAI IONIQ HYBRID?
The 2020 HYUNDAI IONIQ HYBRID received an overall NHTSA safety rating of Not Rated/5, front crash rating of Not Rated/5, side crash rating of Not Rated/5, and rollover rating of Not Rated/5.
What are the most common problems with the 2020 HYUNDAI IONIQ HYBRID?
The most-complained component for the 2020 HYUNDAI IONIQ HYBRID is UNKNOWN OR OTHER with 7 complaints. Other frequently reported areas include ELECTRICAL SYSTEM and STRUCTURE:BODY.
Is the 2020 HYUNDAI IONIQ HYBRID safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. The 2020 HYUNDAI IONIQ HYBRID has an NHTSA safety rating of Not Rated/5. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.