The Used Car Index

2018 Hyundai Ioniq Plug-IN Hybrid problems

NHTSA lists 4 complaints for the 2018 Hyundai Ioniq Plug-IN Hybrid, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-09.

NHTSA lists this vehicle as HYUNDAI IONIQ PLUG-IN HYBRID.

At a glance

Complaints
4
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
1
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
10,575
Investigations
1
Open investigations
0
Manufacturer communications
44

Complaints per 100k sold unavailable. No sales source is available for this record.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
ENGINE AND ENGINE COOLING125.0%
STRUCTURE125.0%
UNKNOWN OR OTHER125.0%
VISIBILITY/WIPER125.0%
Top subsystems
SystemSubsystemComplaints
ENGINE AND ENGINE COOLINGEXHAUST SYSTEM1

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
mechanical failure125.0%1.00
noise or comfort125.0%0.93
structural or corrosion125.0%0.96
visibility or lighting125.0%0.74
Severities
LabelCountShare of taggedMean confidence
low250.0%0.77
moderate250.0%0.95

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 4 tagged complaints of 4 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

1 recalls.

22V459000

Date: 2022-06-28. Systems: HYBRID PROPULSION SYSTEM.

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.

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 repaired under the previous recall will need to have the new remedy completed.

Do not drive: No. Park outside: No.

Investigations

1 investigations; 0 open.

DP22005

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 pedestrian alert sounds for motor vehicles. The standard applies to hybrid and ele

Systems: ELECTRICAL SYSTEM.

Linked campaign numbers: 22V063000.

Manufacturer communications

44 manufacturer communications.

Communications by system
SystemCount
EQUIPMENT14
ELECTRICAL SYSTEM10
STEERING9
EQUIPMENT ADAPTIVE/MOBILITY7
ENGINE AND ENGINE COOLING6
TIRES3
AIR BAGS2
EXTERIOR LIGHTING2

11032522

Date: 2026-04-10. Type: Other. Systems: AIR BAGS.

The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit drivera side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prio

11032523

Date: 2026-04-10. Type: Other. Systems: AIR BAGS.

The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous drivera s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the ve

11025476

Date: 2025-11-06. Type: Service Bulletin/Repair Instructions. Systems: EXTERIOR LIGHTING.

This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary

11018575

Date: 2025-05-08. Type: Service Campaign. Systems: ELECTRICAL SYSTEM.

Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizona s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.

10251285

Date: 2024-02-14. Type: Service Bulletin/Repair Instructions. Systems: VISIBILITY, VISIBILITY/WIPER.

This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is a possibility of the rubber insert and rail spring becoming partially separated on the inner side of the wiper blade, w

10247189

Date: 2023-10-13. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.

This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.

10240087

Date: 2023-07-17. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, EQUIPMENT.

This Service Information bulletin provides information on how to update the Apple Carplay software from HyundaiA?A A s Navigation Updates page. The current version of Google Maps has 10 times the data transmission compared to the previous version. As a countermeasure, an update with a frame skip log

10235566

Date: 2023-04-24. Type: Service Bulletin/Repair Instructions. Systems: STRUCTURE.

Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare cases, the paint can become clouded under the PPF. These spots are the result of moist

10230904

Date: 2023-01-30. Type: Service Bulletin/Repair Instructions. Systems: VISIBILITY.

This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary

10217251

Date: 2022-07-28. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.

Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
IONIQ PLUG-IN HYBRID4

Same model, other years

All model years | All Hyundai models

Other Hyundai models, 2018

Sources

Get this record as JSON

The free rate-limited demo needs no key.

curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=Hyundai&model=Ioniq+Plug-IN+Hybrid&year=2018"

Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.