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Hyundai · NHTSA safety record

2018 Hyundai Ioniq Hybrid

Every safety complaint, recall and defect investigation the US government holds on this vehicle.

13

Complaints

2

Crashes

0

Fires

2

Injuries

0

Deaths

Owners of the 2018 Hyundai Ioniq Hybrid have filed 13 safety complaints with NHTSA between January 2018 and November 2025. The most complained-about system is the electrical system, named in 3 of them (23%). The typical failure was reported at 2,000 miles, the median across the 8 complaints that gave an odometer reading.

NHTSA has issued 2 recalls covering this vehicle.

Recalls (2)

HYBRID PROPULSION SYSTEM: INVERTER

22V459000 · June 28, 2022

The defect
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.
The risk
An overheated PRA increases the risk of a fire.
The 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 repaired under the previous recall will need to have the new remedy completed.

Hyundai Motor America · up to 10,575 vehicles across all model years covered

HYBRID PROPULSION SYSTEM: INVERTER

18V704000 · October 5, 2018

The defect
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.
The risk
The increased electrical resistance can overheat the rear seat which is above the PRA, increasing the risk of a fire.
The 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 customer service at 1-855-371-9460. Hyundai's number for this recall is 178.

Hyundai Motor America · up to 10,575 vehicles across all model years covered

Defect investigations (1)

An investigation means NHTSA has decided a pattern is worth examining. A preliminary evaluation is often closed with no action; an engineering analysis is the stage that usually precedes a recall.

Pedestrian alert sounds

DP22005

Closed defect petition · opened January 27, 2023 · closed August 7, 2023 · led to recall 22V063000

the electrical system

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 pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.

What owners report

Complaints naming each system. One complaint can name several, so these add up to more than 13.

ELECTRICAL SYSTEM 3 23%
ENGINE 3 23%
POWER TRAIN 3 23%
UNKNOWN OR OTHER 3 23%
VEHICLE SPEED CONTROL 2 15%
AIR BAGS 1 8%
SERVICE BRAKES 1 8%
STEERING 1 8%
VISIBILITY/WIPER 1 8%

When the complaints arrived

By the year NHTSA received them, which is not the year the failures happened. They peaked in 2018 at 4.

2018 2025
2018 to 2025

In owners' own words

Quoted from NHTSA's complaint file. These are unverified accounts by the people who filed them, not findings of fault.

AIR BAGS

2 injured · crash · towed · 85,000 miles

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 vehicle then veered into a ditch on the right side of the road. The air bags failed to deploy. There was no warning light illuminated. The contact and her aunt exited the vehicle through the rear doors because the front doors were blocked by the bushes. The contact sustained pain in the right knee and ankle. The contact's aunt sustained pain in the right knee. The ambulance transported both

NHTSA complaint 11627337, quoted in part. Filed by an owner and not verified by NHTSA or by us.

POWER TRAIN

crash · 18,300 miles

THE CAR SHIFTS FROM DRIVE MODE INTO SPORT MODE BY ITSELF WITHOUT THE DRIVER MANUALLY MOVING THE GEAR SHIFT FROM DRIVE TO SPORT. THIS HAPPENS RANDOMLY, BUT ALWAYS WHEN THE CAR IS IN MOTION AND ALWAYS IN A LOW GEAR( USUALLY FIRST GEAR ). IT HAS HAPPENED BOTH WHEN MAKING A TURN AND GOING STRAIGHT AHEAD , USUALLY WHEN THE CAR STARTS TO MOVE AFTER BEING STOPPED LIKE AT A TRAFFIC LIGHT. I CAN GET THE CAR TO GO BACK INTO DRIVE MODE BY PHYSICALLY MOVING THE GEARSHIFT INTO SPORT MODE AND THEN BACK INTO DRIVE MODE AGAIN. UNFORTUNATELY, THE MOST RECENT EPISODE OF THIS HAPPENED WHEN I WAS PULLING INTO MY GARAGE. I WAS HALFWAY INTO THE GARAGE WHEN THE CAR SWITCHED TO SPORT MODE BY ITSELF. THE CAR WAS

NHTSA complaint 11208212, quoted in part. Filed by an owner and not verified by NHTSA or by us.

ENGINE
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 escalation, and directed me to BBB Auto Line, but BBB does not accept 2018 vehicles. This defect matches known DCT failures in Hyundai hybrid models and presents a significant safety risk, especially when transporting my two young children ( we lost mother during the childbirth .

NHTSA complaint 11701382. Filed by an owner and not verified by NHTSA or by us.

POWER TRAIN
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 was laggy and at some points nearly unresponsive. The vehicle was inspected by service technicians. A warning light saying: Warning please check Hybrid Driving System, Do not drive vehicle was illuminated. Mid to late October 2023

NHTSA complaint 11619309. Filed by an owner and not verified by NHTSA or by us.

ENGINE
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 Hyundai Folsom inspected the car and listed issue was a hole in the engine block. They stated it was caused by premature wearing of the rod bearings and refused to repair. The ONLY warning happened within seconds of the car stalling and failing to accelerate before I pulled over. The first symptoms was a noise I couldne place 5 days prior. It was a mild knocking sound that was subtle.

NHTSA complaint 11581760. Filed by an owner and not verified by NHTSA or by us.

ELECTRICAL SYSTEM
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 speed is at all when black while driving on the freeway. I had to pull over and restart the car. My paint and my clear coat is separating on my trunk. It looks white not oxidation just separating and white. My driver side door button to lock the car kept getting stuck and was locking and unlocking. this left the possibilities of my car getting stolen from the door lock and the window motor leaving my

NHTSA complaint 11541573, quoted in part. Filed by an owner and not verified by NHTSA or by us.

POWER TRAIN
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, shuddering, failure to shift, stalling and complete loss of power. Typically, the TCM defect manifests in two ways: shuddering/delayed brake release, which has happened over 20 times and loss of power/engine revving out of gear which has occured three times. These issues are unpredictable, unrepeatable and dangerous. I usually experience them while waiting at stop lights in busy intersections. Delayed and

NHTSA complaint 11449635, quoted in part. Filed by an owner and not verified by NHTSA or by us.

Compare

Other years of the Hyundai Ioniq Hybrid

Model year Complaints Recalls Deaths
2021 13 0
2020 17 0
2019 16 1
2017 40 3

Other 2018 Hyundai models

Every Hyundai on this site — 201 vehicles, 276 recall campaigns and 3 open investigation s.

If this is your car and a dealer keeps failing to fix it, your state's lemon law may require the manufacturer to replace it or buy it back. What each state asks for , read from the statutes.

Where these numbers come from

A complaint is one owner's account and has not been verified by NHTSA or by us. A vehicle with more complaints is not necessarily worse: models that sold in larger numbers collect more of them. How this is counted.

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