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Hyundai Ioniq 5Model year report

2025 Hyundai Ioniq 5 Problems

Compared with other Hyundai Ioniq 5 years

Too new to compare

Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated

Complaints
300filed with NHTSA
Median mileage
8,000miles, 3 complaints with mileage
Recalls
9campaigns on record
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA crash rating
—no overall rating published
EPA fuel economy
106 MPGecombined, Electric AWD · 116 city / 96 hwy

Sources: NHTSA records for the 2025 Hyundai Ioniq 5 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

What owners report

Owner complaints for this model year are dominated by one pattern: a loud pop or bang from the rear of the vehicle, followed by a warning to check the electric vehicle system and a rapid loss of drive power, which dealers most often trace to the Integrated Charging Control Unit (ICCU) and an associated fuse. A second recurring theme is the 12-volt auxiliary battery going flat without warning, sometimes leaving the car unresponsive. Driver-monitoring and lane-assist warnings that fire when the driver is paying attention, and occasional drops into reduced-power mode, round out the reports.

  1. Electrical system

    ICCU failure: pop noise, warnings, loss of power

    • 203 complaints (68%)
    • median 8,000 mi at 1.4 yrs old (3 state mileage, few)
    • filed 2025–2026

    Owners describe a loud pop, bang or thud from the rear of the car, sometimes while parked, charging or backing out of a driveway, followed by a dashboard message to check the electric vehicle system or to stop the vehicle and check the power supply. Speed then becomes limited and the car loses propulsion, often needing a flatbed tow. According to the complaints, dealers typically confirm the Integrated Charging Control Unit (ICCU) and an associated fuse need replacing, and in some cases the 12-volt battery as well; several owners report the part being back-ordered with no repair date. Most reports come from vehicles with only a few thousand miles, often within the first months of ownership and sometimes shortly after a charging session or on the first start of the day.

    1 related service bulletin

    What to check: Ask the seller or dealer whether the ICCU and its fuse have already been replaced and for the repair invoice. On a test drive, listen for any pop from the rear on start-up and confirm the cluster shows no electric-vehicle-system or charging warnings.

    2 excerpts from owner complaints in NHTSA records

    “Battery warning light went on as I left my house. Since this is an EV, naturally became concerned. Car was towed to Heritage Hyundai, Towson Md and I was later informed by the technician the ICCU went bad and this was a common problem for the Hyundai/Kia EVs which Hyundai/Kia have not fixed. The car is currently at the dealer's service department.”

    NHTSA complaint #11714811, filed 2026-02

    “Turned on my car one day after charging and heard a 'pop' from the rear of the car, followed by warning lights activating on the dash and an electrical system error message. I had the car towed to the dealership (Santa Monica Hyundai) and they confirmed the issue was an ICCU component failure. There were no warning signs or issues before the failure. The dealership currently has no ETA for a fix.”

    NHTSA complaint #11720932, filed 2026-02
  2. Forward collision avoidance

    Driver attention and lane-assist warnings misfire

    • 36 complaints (12%)
    • typically at 1.1 yrs old
    • 1 mention a crash, fire or injury
    • filed 2025–2026

    Owners report repeated chimes telling them to keep their eyes on the road while they are looking straight ahead, and say the system then disengages adaptive cruise control or lane keeping. Some describe the lane-keeping alerts sounding constantly when wearing sunglasses or on bright days, and one owner reports the car making an unrequested steering nudge when lane markings were unclear. Complaints say dealers described the behaviour as working as designed or suggested the driver's height, glasses or seat position were the cause. Reported across low-mileage vehicles within the first year, with some owners saying it happens daily or weekly depending on lighting and road markings.

    1 related service bulletin

    What to check: During a test drive, use adaptive cruise and lane keeping on a marked road and see whether attention warnings appear while you are looking ahead; also try it with sunglasses on. Ask whether any front-camera calibration or software updates have been performed.

    2 excerpts from owner complaints in NHTSA records

    “The emergency steering will engage at random times. The car makes a loud noise, a light on the dashboard illuminates, and the car will try to drive into another lane. This happens at least once a week, and it has never happened when there was another car around, so I wasn't about to get into a collision. It has happened when there is construction and the lane markers are unclear, when the road is a little wet and other times I can't explain. …”

    NHTSA complaint #11736141, filed 2026-05

    “When using cruise control the Driver Warning Alert sends visible and audible alerts (Keep your eyes on the road) even when I'm looking straight ahead, not wearing glasses, and not blocking the camera. I have tried multiple steering wheel angles and seat positions. At times I can drive for 30 minutes with no alarms but at other times it goes off every 30 seconds. This takes my attention away from my driving as I work on cancelling the alarm and puts me in a dangerous situation - exactly the opposite of its intended use. …”

    NHTSA complaint #11705476, filed 2025-12
  3. Electrical system

    Sudden reduced-power or limp mode while driving

    • 21 complaints (7%)
    • typically at 1.2 yrs old
    • filed 2025–2026

    Owners describe the accelerator going unresponsive and speed dropping to roughly 20-40 mph without much warning, sometimes with a chime or a message to stop the vehicle and check the power supply, and in one case after the car had just been returned from a repair. Cars are reported as needing a tow or being restarted before normal power returns. In one complaint a dealer logged an active air-flap fault; other owners say the cause was traced to the charging unit. Reported from a few thousand miles upward, including on vehicles less than a year old and in one case within hours of a warranty repair.

    What to check: Ask for the full service history and whether any reduced-power or propulsion warnings have been logged. Note whether dashboard warnings appear during a test drive, especially after a charging session.

    2 excerpts from owner complaints in NHTSA records

    “Driving home near my apartment, I had to join a busy highway from a full stop. I found a small gap and tried to accelerate to quickly merge into traffic, when my car made a high pitched alert noise and noticably did not accelerate beyond about 25 miles per hour on a 45-50mph highway with heavy traffic. I turned on my hazards and still ended up with a line up of cars honking behind me. Flooring the accelerator did absolutely nothing to increase my speed. …”

    NHTSA complaint #11762153, filed 2026-09

    “I am reporting a serious safety defect involving my 2025 Hyundai Ioniq 5 (lease vehicle, brand new). While driving on a highway in Massachusetts during snowy conditions, the vehicle suddenly displayed a critical warning message “Stop and Check Power Supply” and lost power, forcing us to stop on the highway. There were two children in the vehicle, and the situation was life-threatening due to traffic speed, weather conditions, and lack of a safe shoulder. …”

    NHTSA complaint #11708214, filed 2026-01
  4. Electrical system

    12-volt auxiliary battery drains and leaves car dead

    • 17 complaints (6%)
    • typically at 1.3 yrs old
    • filed 2025–2026

    Owners report finding the car completely unresponsive with no prior warning, having to jump-start it to reach the dealer, and being told the 12-volt battery had a bad cell or simply needed charging. Several say the problem returned after a trickle charge or a replacement, and one owner measured voltage dropping sharply under a light load before the car shut down. Some owners link the drain to the car not recharging the auxiliary battery properly while parked or after a charging session. Often described within the first year, sometimes after the car sits unused for several days or following an overnight charging session.

    2 related service bulletins

    What to check: Ask whether the 12-volt battery has been replaced or charged and whether the vehicle control unit software update for scheduled climate has been applied. If the car has been sitting, check that it powers up and unlocks normally before buying.

    2 excerpts from owner complaints in NHTSA records

    “These cars still have problems keeping the 12v charged. Car was leased on Jan 19. 12v first died on Feb 15, took it to dealer where they trickle charged it. 12v died again on Feb 18, dealer replaced the 12v. The 12v died again on Mar 11 and is still at dealer service center. Case with Hyundai corporate was opened and the dealer is going back and forth with them. …”

    NHTSA complaint #11649366, filed 2025-03

    “12v battery failure at 1 year mark. No warning or screen messages. Car was completely dead when walking up. Could have been stranded if not at home. Luckily it occurred in my garage and doors unlocked. Had to jump start to drive to dealership. Confirmed 12v battery had a bad cell and replaced.”

    NHTSA complaint #11711645, filed 2026-01

Buying note. This model year is still new enough that complaints cluster at low mileage, so a pre-purchase inspection should focus on the charging system: ask for proof of any ICCU, fuse or 12-volt battery work and confirm software updates are current. A longer test drive covering cruise control, lane keeping and a charging session will show whether the reported warnings and power-loss behaviour appear on the specific car.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.

NHTSA recorded 300 consumer complaints for the 2025 Hyundai Ioniq 5. 3 of the complaints include a mileage, and 67% of those were filed for vehicles with under 50,000 miles; the median is 8,000 miles. Of all complaints, 4 involved a crash, 2 an injury, according to the filers. NHTSA lists 9 recall campaigns and 44 technical service bulletins for this model year.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Air bags (3), Body and structure (3), Seat belts (2), Tires (2), Wheels (2), Visibility (wipers, defrost, mirrors) (1).

Example complaints

Electrical system: “The Integrated Charging Control Unit in our 2025 Ioniq 5 failed on vehicle startup. Fortunately the vehicle was parked when the part failed. There were no issues or symptoms prior to the failure and subsequent fault message. Failure of the ICCU has been confirmed by our local Hyundai dealer which is now in possession of the vehicle awaiting repair.”

NHTSA complaint #11714517, filed 2026-01

Fuel system: “I was driving on the highway when the car suddenly flashed a “check power supply” warning and then immediately shut down. I was traveling approximately 55 mph when the car came to a sudden stop and I was almost rear-ended as a consequence. I was not rear ended because I had a wide shoulder to immediately pull over onto, but if this had happened in a location without a shoulder, it likely would have caused an accident.”

NHTSA complaint #11733134, filed 2026-04

Transmission and drivetrain: “While driving in traffic I heard a loud pop coming from the rear of the vehicle. A warning light came on on the dash board and the vehicle immediately slowed to about 10 mph. This was a dangerous situation as I was actively passing a vehicle on the highway and could have ended up colliding with oncoming traffic!”

NHTSA complaint #11713102, filed 2026-01

Forward collision avoidance: “I turned on adaptive cruise control while on the highway and got an alert from the Forward Attention Warning system that I wasn't paying attention even though I was looking out at the road normally. The car eventually decided this meant I was unresponsive and initiated an automatic Emergency Stop in the middle of the highway. The only way I could get the adaptive cruise control to work as expected was to remove my glasses, which I need to see clearly and drive safely. …”

NHTSA complaint #11694576, filed 2025-10

Mileage when problems were reported

67% of the 3 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 200 and 82,069 miles.

67%0–100%10–250%25–500%50–7533%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (3 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 8,000 miles.

Complaints by year filed

This model year is less than 4 years old, so a trend is not meaningful yet.

20252026235
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2025 Hyundai Ioniq 5. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
Ioniq 5 · SUV AWDnot rated———5 · 8.3% risk
Ioniq 5 · SUV RWDnot rated———5 · 8.4% risk

Driver aids listed by NHTSA for the 2025 model year: forward collision warning standard on some versions, lane departure warning standard, automatic emergency braking standard on some versions.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2025 Hyundai Ioniq 5 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving); for electric versions it is the cost of electricity and the rating is in MPGe.

VersionEngineTransmissionCityHwyComb.Fuel / yr
Ioniq 5 AWD (19 inch Wheels)Electricsingle-speed11696106 MPGe$700
Ioniq 5 AWD (20 inch Wheels)Electricsingle-speed1088898 MPGe$800
Ioniq 5 AWD XRTElectricsingle-speed1038594 MPGe$800
Ioniq 5 RWDElectricsingle-speed129100114 MPGe$700
Ioniq 5 Robo taxi RWDElectricsingle-speed736971 MPGe$1,050
Ioniq 5 Standard range RWDElectricsingle-speed131100115 MPGe$650

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

See all 9 recalls for the 2025 Hyundai Ioniq 5 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 44 on record; the latest 10 are shown.

See all 44 bulletins →

Other model years of the Hyundai Ioniq 5

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2026285052—98 MPGeToo new to compareToo new
20253008,0009—106 MPGeToo new to compareToo new
202422610,12035110 MPGeToo new to compareToo new
202338815,50045—Not compared (fewer than 3 comparable model years)Too new
202240721,50035110 MPGeNot compared (fewer than 3 comparable model years)Rising

All Hyundai Ioniq 5 model years · Best and worst years by complaints

Frequently asked questions

What are the most common problems with the 2025 Hyundai Ioniq 5?

Owner complaints for this model year are dominated by one pattern: a loud pop or bang from the rear of the vehicle, followed by a warning to check the electric vehicle system and a rapid loss of drive power, which dealers most often trace to the Integrated Charging Control Unit (ICCU) and an associated fuse. The issues reported most often: ICCU failure: pop noise, warnings, loss of power; Driver attention and lane-assist warnings misfire; Sudden reduced-power or limp mode while driving.

How many NHTSA complaints does the 2025 Hyundai Ioniq 5 have?

NHTSA recorded 300 consumer complaints for the 2025 Hyundai Ioniq 5 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2025 Hyundai Ioniq 5 is reported most often?

Electrical system is named most often, in 228 complaints (76% of the total), followed by fuel system with 66.

Has the 2025 Hyundai Ioniq 5 been recalled?

NHTSA lists 9 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How efficient is the 2025 Hyundai Ioniq 5 according to the EPA?

The EPA rates the 2025 Hyundai Ioniq 5 (Ioniq 5 AWD (19 inch Wheels), Electric) at 106 MPGe combined, 116 city and 96 highway, with an estimated annual electricity cost of $700 at 15,000 miles a year. Other battery and motor versions are rated differently.

At what mileage are problems with the 2025 Hyundai Ioniq 5 reported?

Among the 3 complaints that include a mileage, the median is 8,000 miles and the middle half falls between 200 and 82,069 miles; 67% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.