2020 Hyundai Ioniq problems
The Hyundai Ioniq is a compact five-door liftback manufactured and marketed by Hyundai. The nameplate Ioniq is a portmanteau of ion and unique. It is marketed as the first Hyundai automobile to be offered without a standard internal combustion engine, but rather sold in hybrid, plug-in hybrid, and all-electric variants.
The Ioniq Hybrid debuted in South Korea in January 2016, with all three variants debuting at 2016 Geneva and New York auto shows. The hybrid variant launched in its home market in February 2016, followed by the electric model in July 2016. The plug-in hybrid version followed in February 2017.
From its first model year (2017) through the 2019 model year, the Ioniq Electric had been the EPA's most efficient vehicle with a rated fuel economy of 136 miles per gallon gasoline equivalent (24.8 kWh/100 mi; 15.4 kWh/100 km). The Ioniq Blue Hybrid version has been rated at 4.1 L/100 km (58 mpg‑US), making it the most fuel-efficient hybrid vehicle to be mass-produced.
Following its discontinuation in South Korea in 2021, production of the Ioniq ended in July 2022 in favour of battery electric lineup of Ioniq-badged models starting from the Ioniq 5 hatchback and Ioniq 6 sedan with Ioniq 7 to follow.
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Common 2020 Hyundai Ioniq problems
The 2020 Hyundai Ioniq Electric has been reported to have a serious issue with its Battery Management System (BMS) at around 80,000 kilometers. This issue was first noticed by the owner when they detected a strong and unusual smell after charging the car for about an hour. The error messages related to the BMS started appearing the following morning and persisted even after driving for a few minutes. The owner booked an appointment for service, but the earliest available slot was a week later. During this time, the owner continued to drive the car as usual, and the strong smell decreased over the course of the week. However, the error message persisted, and the owner decided to bring the car in for service.
The dealer provided a gas-powered loaner car while they investigated the issue with Hyundai Canada engineers. However, the investigation is expected to take more than a month, leaving the owner without their beloved Ioniq Electric and having to fuel up the loaner car every week. The owner also mentioned that the CVT transmission of the loaner car is a significant departure from the instant torque of an EV, making the driving experience quite different.
Another common problem with the 2020 Hyundai Ioniq, as well as other model years, is a parasitic drain caused by Hyundai's Bluelink software. This issue has been reported by several Hyundai owners on Reddit, who speculate that the software phones home too much, causing the car's 12-volt battery to drain overnight when the car is out of cell range. This issue has been reported to occur even in cars that are still under warranty, and the dealers have been unable to recreate the problem, leaving the owners with a car that randomly doesn't start when they press the button.
The 2017 Hyundai Ioniq Hybrid has also been reported to have engine problems, with soy-based wires chewed by rodents being the most common issue. This problem has been reported to cost an average of $2,400 to fix, with an average mileage of 22,000 miles.
In summary, the 2020 Hyundai Ioniq Electric has been reported to have a serious issue with its Battery Management System, which can take more than a month to investigate and fix. The 2017 Hyundai Ioniq Hybrid has also been reported to have engine problems, with soy-based wires chewed by rodents being the most common issue. Additionally, the 2020 Hyundai Ioniq, as well as other model years, has been reported to have a parasitic drain caused by Hyundai's Bluelink software, which can cause the car's 12-volt battery to drain overnight when the car is out of cell range.
Is Hyundai Ioniq reliable?
Reliability Survey. The hybrid Ioniqs have always performed well in previous surveys, but weren't featured in this latest one. However, the Ioniq Electric only came in 19th place out of 20 cars in the electric car class. At least all issues were fixed under warranty, according to our participants.
Why did Hyundai discontinue the Ioniq?
Is the IONIQ still being built? No, in July 2022, production of the original Hyundai IONIQ ended at the Ulsan plant in South Korea. Why was the original IONIQ discontinued? The worldwide discontinuation of IONIQ represents a long-planned decision by Hyundai to meet changing consumer demands in the automotive sector.
Which year Hyundai Ioniq is the best?
Hyundai IONIQ 5 Named Best Electric Vehicle of 2024 by Cars.com.
How long will a Hyundai Ioniq battery last?
Your Hyundai IONIQ 6 battery will ordinarily last between 3 to 5 years, but that can fluctuate massively depending on type of battery, weather conditions battery size, and driving habits. Even still, just because your battery isn't totally dead, doesn't mean it's operating properly.
2020 Hyundai Ioniq car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Hyundai Ioniq problems, we found that the most common problems with these 2023 model year vehicles are:
- Service brakes problems
- Electrical system problems
- Unknown or other problems
- Lane departure problems
- Structure problems
The graph below shows statistics for all 2020 Hyundai Ioniq vehicle components and the number of complaints received.
2020 Hyundai Ioniq complaints
The NHTSA has received 13 complaints about various vehicle components related to the 2020 Hyundai Ioniq.
SERVICE BRAKES PROBLEM
- Date Of Incident: 2023-09-24
- Crash: 1
- VIN: KMHC85LC3LU
- Components: SERVICE BRAKES
- Summary: 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.
VISIBILITY/WIPER PROBLEM
- Date Of Incident: 2024-06-26
- VIN: KMHC65LD5LU
- Components: VISIBILITY/WIPER
- Summary: 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.
LANE DEPARTURE,EQUIPMENT ADAPTIVE/MOBILITY PROBLEM
- Date Of Incident: 2023-10-21
- Crash: 1
- VIN: KMHC85LC3LU
- Components: LANE DEPARTURE,EQUIPMENT ADAPTIVE/MOBILITY
- Summary: 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.
ELECTRICAL SYSTEM,UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2023-06-06
- VIN: KMHC85LC4LU
- Components: ELECTRICAL SYSTEM,UNKNOWN OR OTHER
- Summary: ***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.
ENGINE PROBLEM
- Date Of Incident: 2023-06-03
- VIN: KMHC85LJ5LU
- Components: ENGINE
- Summary: 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.
SERVICE BRAKES PROBLEM
- Date Of Incident: 2023-05-25
- VIN: KMHC85LJ2LU
- Components: SERVICE BRAKES
- Summary: 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
STRUCTURE PROBLEM
- Date Of Incident: 2023-03-28
- VIN: KMHC65LC4LU
- Components: STRUCTURE
- Summary: 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.
LANE DEPARTURE PROBLEM
- Date Of Incident: 2023-01-26
- VIN: KMHC75LC0LU
- Components: LANE DEPARTURE
- Summary: 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.
ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM PROBLEM
- Date Of Incident: 2022-09-05
- VIN: KMHC75LC2LU
- Components: ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM
- Summary: 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.
ELECTRICAL SYSTEM,UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2022-01-01
- VIN: KMHC05LC9LU
- Components: ELECTRICAL SYSTEM,UNKNOWN OR OTHER
- Summary: 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.
STRUCTURE,UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2021-05-25
- VIN: KMHC75LC2LU
- Components: STRUCTURE,UNKNOWN OR OTHER
- Summary: Received this code from the car: DTC C223986 DTC System CHASSIS DTC Sub System LKAS But NO ONE can tell me what it means...
SERVICE BRAKES PROBLEM
- Date Of Incident: 2021-09-09
- VIN: KMHC85LJ5LU
- Components: SERVICE BRAKES
- Summary: The regenerative brake system failed to operate as it normally does, and no indicator lights came on on the dashboard. This unexpected loss of braking force nearly caused me to hit the car in front of me. I had recently disengaged cruise control and was approaching a red light. I pressed my foot on the brake pedal and felt no response from the car. I lifted my foot and pressed again two or three times with no response, neither deceleration nor any change in the regenerative braking meter on the dashboard. I had to press the brake all the way to the floor before the mechanical brakes were activated. This loss of braking power greatly increased my stopping distance and I narrowly avoided hitting the car in front of me. Once the light turned green, I accelerated and tested the brakes again and everything seemed to be working fine, including the regeneration meter. No indicator lights of any kind came on during this incident. This occurred approximately a week ago. I have owned the car for approximately three weeks, and have not experienced any similar issues in the two weeks prior to the incident or in the week since. I have not yet taken it to the dealership as I would not be able to reproduce the issue for them. I will gladly cooperate with any inspection needed to better understand this issue.
SERVICE BRAKES PROBLEM
- Date Of Incident: 2021-09-10
- VIN: kmhc75lj1lu
- Components: SERVICE BRAKES
- Summary: This issue is easily repeatable, when braking if you hit a bump (pot hole, etc.) the braking power is greatly reduced & the brake pedal becomes almost impossible to push down to stop the car, making it very hard to stop even when not coming to an abrupt stop.
Additional sources
More sources of information about 2020 Hyundai Ioniq problems:
HELP! Having problems with my brand new 2020 Hybrid Ioniq ...
Jun 28, 2021 ... The 12V battery does get some extra charging while the car is plugged in, and Hyundai doesn't seem to manage their 12V battery all that well to ...
2020 Hyundai Ioniq Reliability - Consumer Reports
Owner Reported Trouble Spots · EV Battery · Drive System · Noises And Leaks · Engine Electrical · Electric Motor · Electrical Accessories · Transmission Major.
Any issues with Hyundai ioniq blue after 100k miles? : r/IoniqHybrid
Oct 26, 2022 ... I had a 2020 Hyundai Ioniq Limited (the top trim) and at 16,000 miles it had already had many issues, including overheating while driving ...
2020 Hyundai Ioniq Hybrid Problems | Kelley Blue Book
How reliable is the 2020 Hyundai Ioniq Hybrid? See the most common repairs performed and learn if your vehicle is at risk for major repairs in the next 12 ...
Recalls/Common faults/Upgrades | Hyundai IONIQ Forum
Mar 20, 2017 ... Recalls/Common faults/Upgrades · 1. Media unit replacement / recall · 2. Brake binding issue · 3. Squeaky noise from front door (both?) · 4.
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