2025 Hyundai Ioniq 5 fuel, hybrid & EV propulsion problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 8, 2026NYElectrical SystemFuel, Hybrid & EV PropulsionOther / Unknown

   On 8/30 my vehicle experienced a power loss on a highway (reported here separately). I took the car to the dealership and they could not replicate the error and gave the vehicle back to me on 9/4. Later that day I had to drive 2 hours north to a wedding in the mountains. At 9:30pm my vehicle experienced a full drive power loss on an unlighted, curving, rural 2-lane mountain road in an area with minimal cell phone service. I tried to restart the vehicle several times and…

   NHTSA complaint #11762663 · source
2. Filed Sep 4, 2026NYFuel, Hybrid & EV PropulsionOther / UnknownAcceleration & Cruise Control

   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. On slight downhills I…

   NHTSA complaint #11762153 · source
3. Filed Sep 2, 2026VAElectrical SystemFuel, Hybrid & EV PropulsionAcceleration & Cruise Control

   While driving this EV with cruise control on, the dashboard suddenly showed a message that “Smart Cruise Control conditions not met”. Attempting to re-engage the cruise control did not work and then the vehicle suddenly lost all propulsion (pressing the accelerator did nothing). The car quickly slowed to about 20 mph before we could maneuver it to the shoulder and turn it off. After a couple minutes, we restarted the car and drove it to the dealer. There were no other…

   NHTSA complaint #11761730 · source
4. Filed Aug 11, 2026CAElectrical SystemFuel, Hybrid & EV PropulsionOther / Unknown

   My 2025 Hyundai Ioniq 5 experienced a complete and sudden loss of drive power at high speed, generating open fault code DTC P1A9096 (Internal ICCU Failure) [24V-204]. This failure completely matches the component and safety hazard profile under active Federal Safety Recalls 24V-204 and 24V-868 [24V-204].The vehicle was repaired at an authorized retail facility, Hyundai of El Cajon. The facility's un-finalized pre-invoice explicitly verified the ICCU failure code but…

   NHTSA complaint #11756375 · source
5. Filed Aug 1, 2026NCFuel, Hybrid & EV Propulsion

   SAFETY DEFECT REPORT: 2025 HYUNDAI IONIQ 5 HIGH-VOLTAGE BATTERY FAILURE On Sunday, July 5, 2026, at approximately 24,000 miles, the vehicle suddenly displayed a critical dashboard safety alert notifying me of an electrical propulsion failure and explicitly instructing me not to drive the vehicle. The sudden failure entirely disabled the vehicle's driving power and compromised its operational safety. The vehicle was removed from my possession via a flatbed tow on Wednesday,…

   NHTSA complaint #11754142 · source
6. Filed Jul 18, 2026MAElectrical SystemFuel, Hybrid & EV Propulsion

   Systemic failure of the electrical architecture and Integrated Charging Control Unit (ICCU) resulting in a sudden, catastrophic loss of motive power. Over 14 months of ownership, this vehicle has suffered four distinct, electrical and charging failures. On June 6, 2026, the vehicle experienced a total ICCU failure. All lights in the car went dark and lost all power without warning, creating an immediate and life-threatening hazard to myself . The vehicle had to be towed.…

   NHTSA complaint #11751250 · source
7. Filed Jul 15, 2026CAEngineFuel, Hybrid & EV Propulsion

   The car entered a failed ICCU state (not confirmed until the car was looked at by Hyundai at the dealership) while I was driving down to Ano Nuevo regional park. Received a warning on the dash that said that electrical system has failed and to pull over. It restricted me from going over 10 mph on Highway 1 and I eventually pulled over the side of the road and got towed to the dealership. The car is home with me now but I do not feel safe driving this vehicle after all of the…

   NHTSA complaint #11750561 · source
8. Filed Jun 8, 2026CAElectrical SystemEngineFuel, Hybrid & EV Propulsion

   When I started the car at 10pm , a loud pop was heard and warning lights on the dashboard indicated an electrical problem. I turned off the radio and anything extra that could use up power; during the next 45 minutes I took surface streets instead of the freeway to drive 22 miles back home and speed was limited to 40 mph. The next day the same warning lights were on the dashboard and speed was limited to 20mph; car lost power after 1 block. Car was towed to the dealer, where…

   NHTSA complaint #11742619 · source
9. Filed Jun 4, 2026AKFuel, Hybrid & EV Propulsion

   Car has only 3307 miles and incurred a DTC P1A9096. This meant the vehicle only had power from the 12 volt battery, not traction battery. Luckily, the event happened 3 miles from home and we were able to just make it. Next day upon calling for flatbed tow service, the car generated an additional DTC P05616. 12 volt battery was exhausted and nothing functioned on the car. Had to then call for a different tow truck with dollies. The failure of the ICCU (Integrated Charging…

   NHTSA complaint #11742214 · source
10. Filed May 30, 2026MAElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

    Vehicle was parked in closed garage overnight. In the morning I tried to start the car and it was unresponsive. key fobs, digital keys, NFC cards none of them were able to open the car. Used a physical key to open the door, and then tried to turn the car on, nothing worked all screens remained black and car was unresponsive. AAA confirmed that the 12V battery was fully dead. When they jumped the vehicle we heard a pop in the car, which is a known ICCU failure indication. The…

    NHTSA complaint #11741000 · source
11. Filed May 29, 2026WAElectrical SystemFuel, Hybrid & EV Propulsion

    The ICCU failed on my 2025 Ioniq 5 within 3 months of ownership and only 811 miles on it. The weather that morning was slightly chilly but not cold. I turned on the car and put it into reverse and after backing up only a couple feet, I heard a pop and the "Check Vehicle Electrical System" message and warning light came on. I had not DC fast charged the car since owning it and had only charged it on level 2 chargers at about 9.6kw to 12kw. The car was not charging the night…

    NHTSA complaint #11740761 · source
12. Filed Apr 28, 2026NHElectrical SystemFuel, Hybrid & EV Propulsion

    While driving on [XXX] , I heard a 'pop' towards the rear of the car. A dashboard warning appeared notifying me of an electrical fault. The car went into 'limp' mode, which allowed me to drive no faster than around 25 mph. Fortunately, I was within a half mile of my home, so I was able to do a U turn and return home. I called a tow truck, which towed the car to the local Hyundai dealer in Lebanon, NH. This was a Saturday in February, 2026, so dealer inspection did not occur…

    NHTSA complaint #11734318 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology