Model year record

2018 Hyundai Ioniq Plug-In Hybrid recalls & problems

The 2018 Hyundai Ioniq Plug-In Hybrid has 1 safety recall and 4 owner complaints on file with NHTSA. The most-reported problem area is engine and engine cooling (1 complaint).

Recalls1safety recalls

Complaints4filed by owners

Crashes · fires0 · 0reported in complaints

Injuries · deaths0 · 0reported in complaints

Safety recalls

Hybrid propulsion systemJun 28, 2022

Inverter

Recall 22V45900010,575 vehicles

Problem: 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.
Risk: An overheated PRA increases the risk of a fire.
Fix: 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.

Recall repairs are free at any authorised dealer. A recall listed here may already have been fixed on a particular car: enter its 17-character VIN at nhtsa.gov/recalls to see open recalls.

Fuel economy

Ioniq Plug-in Hybrid Plug-in Hybrid

52mpg combined

City / highway	53 / 52 mpg
Electric range	29 mi
On electricity	119 MPGe · 28 kWh/100 mi
Fuel	Regular Gasoline

1.6 L · 4 cyl · Automatic (AM6) · Front-Wheel Drive · about $1,300/year to fuel

EPA estimates from fueleconomy.gov for each engine and transmission sold. Annual cost is the EPA's estimate for 15,000 miles a year at its current fuel and electricity price assumptions. Your results will vary.

What owners report

Problem area	Complaints	Typical mileage*
Engine and engine coolingExhaust system › Emission control › Catalytic convertor	1	—
Visibility/wiper	1	—
Structure	1	—
Unknown or other	1	—

*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.

Recent owner complaints

Unknown or other
I am writing to dispute the denial of my paint defect warranty claim formally and to demand that Hyundai Motor America reconsider its decision. My 2018 Hyundai Ioniq (Silver, VIN: [XXX] ) is exhibiting significant paint bubbling â the identical defect that Hyundai has already acknowledged and accepted responsibility for in white-painted vehicles across multiple model years. Timeline of Events â¢ I first contacted Hyundai Customer Care by phone, and was directed to visit an authorized dealership. â¢ On May 8, 2025, I visited Tustin Hyundai, where Dealer Coordinator Alex Cervantes documented the paint bubbling by photographing the affected areas and submitted the claim to Hyundai Motor…
May 11, 2023
Structure
The contact owns a 2018 Hyundai Ioniq Hybrid. The contact stated that upon inspection, it was discovered that both the passengerâs side front and rear carpets had become soaked with water and condensation from the operation of the air conditioning unit. The contact was also concerned that mold was present due to the failure. The local dealer was contacted and a service appointment was scheduled. The manufacturer was not yet notified. The failure mileage was 12,000.
Jun 28, 2022 · 12,000 miles
Visibility/wiper
Sunglass holder would randomly come down and block rear view mirror completely. Unable to see the back.
Jan 14, 2022
Engine and engine cooling › Exhaust system › Emission control › Catalytic convertor
I have put around 31K miles in my car. Day before yesterday ( Nov-2 ) when I was driving back home from work, suddenly I heard a noise. I pulled over and stopped the car. when I got down and checked, I noticed exhaust system or something similar to that fell off and touching the road. I have seen similar issues posted in Hyundai Ioniq forums https://www.ioniqforum.com/threads/very-dissapointed.37027/ https://www.ioniqforum.com/threads/first-issue-exhaust-fell-off-at-21k-miles-2019-phev.35092/ I will attach few pictures that I took during this incident.
Nov 2, 2021

Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.

NHTSA defect investigations

Pedestrian alert soundsClosedLed to recall 22V063000
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…
DP22005 · opened Jan 27, 2023 · closed Aug 7, 2023