The 2018 Hyundai Ioniq Hybrid has 2 NHTSA recall campaigns affecting an estimated 21,150 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 18 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Ioniq HEV and Ionic PHV vehicles previously recalled under recall number 18V-704. The Power Relay Assembly (PRA) located underneath the rear seat may overheat.
Consequence
An overheated PRA increases the risk of a fire.
Remedy
Dealers will inspect and replace the main relay or PRA, as necessary, free of charge. Owner notification letters were mailed August 23, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 232. This recall replaces NHTSA recall number 18V-704. Vehicles already…
Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Hyundai Ioniq Hybrid and 2018 Ioniq Plug-In Hybrid vehicles. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance.
Consequence
The increased electrical resistance can overheat the rear seat which is above the PRA, increasing the risk of a fire.
Remedy
Hyundai will notify owners, and dealers will inspect the Power Relay Assembly (PRA) for damage. If no damage is found, the main relay will be replaced. If damage is found, the PRA will be replaced. These repairs will be performed free of charge. The recall began February 28, 2019. Owners may contact Hyundai…
Complaints by component
ELECTRICAL SYSTEM
3
ENGINE
3
POWER TRAIN
3
1crashes
UNKNOWN OR OTHER
3
VEHICLE SPEED CONTROL
2
AIR BAGS
1
1crashes2injuries
SERVICE BRAKES
1
STEERING
1
VISIBILITY/WIPER
1
Total complaints18
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“My 2018 hyundai ioniq hybrid has a safety-critical transmission defect. The vehicle slips violently from 1st to 2nd gear, loses acceleration, and causes unpredictable hesitation. This creates a danger when merging onto highways or crossing intersections. Hyundai refused goodwill assistance, denied…”
“The contact owned a 2018 hyundai ioniq hybrid. The contact stated while driving 75 mph with her aunt in the front passenger's side seat, another vehicle suddenly merged into the contact's lane, causing the passenger's side of the vehicle to crash into the driver's side of the other vehicle. The…”
“The car engine started to stall, the engine light came on and advised me to shut off engine then I pulled over and smoke immidiatley filled the cabin and outside the hood. My engine could have blown up. Had I not pulled over so quickly my car would have caught fire and I would have died. Yes the…”
“The clutch failed and the clutch and I believe the clutch actuator had to be replaced. It was not available for inspection upon request. My safety and the risk of others were compromised by the constant jerking and sputtering, of the gears that took place during vehicle operation. My acceleration…”
“My lcd screen constantly goes black. A couple times the steering wheel locked the wipers and washer fluid went off at the same time. I had to hit the brakes and power the car on and off to reset it while making a turn. When having my window motor replaced for the second time my dash where the…”
“My lcd screen constantly goes black. A couple times the steering wheel locked the wipers and washer fluid went off at the same time. I had to hit the brakes and power the car on and off to reset it while making a turn. When having my window motor replaced for the second time my dash where the…”
“My lcd screen constantly goes black. A couple times the steering wheel locked the wipers and washer fluid went off at the same time. I had to hit the brakes and power the car on and off to reset it while making a turn. When having my window motor replaced for the second time my dash where the…”
“There is a defect with the transmission control module (tcm) and dual-clutch transmission (dct). This defect prevents the car from properly accelerating from a stop. The defect manifests in the following ways when pressing the accelerator: unresponsive or sluggish acceleration, jerking,…”
Defect investigations
InvestigationDP22005 Opened 2023-01-27 · closed 2023-08-07
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2018 Hyundai Ioniq Hybrid as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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