2018 HYUNDAI IONIQ — Owner-Reported Problems

NHTSA Office of Defects Investigation Snapshot 2026-08-22 17 complaints · 3 recalls
Most-reported system: ENGINE (4 complaints · 23.5%)
Safety signals:
  • Crashes 2
  • Fires 0
  • Injuries 2
  • Deaths 0
Compare with 2017 →
NHTSA Consumer Complaints Snapshot 2026-08-21 Open source record Read our complete data methodology →

Complaint counts reflect self-selected reports and are not normalised for production sales volume. We publish no reliability scores, superlatives, or vehicle rankings.

Component Problem Distribution

Share of owner complaints filed for each vehicle system (unaffected by sales volume)

Component Problem Distribution ENGINE appears in 4 of 17 owner complaints (23.5%) in this vehicle snapshot. ENGINE: 4 complaints, 23.5% of reports ENGINE 4 · 23.5% POWER TRAIN: 3 complaints, 17.7% of reports POWER TRAIN 3 · 17.7% · 1 crash reports VEHICLE SPEED CONTROL: 2 complaints, 11.8% of reports VEHICLE SPEED CONTROL 2 · 11.8% VISIBILITY: 2 complaints, 11.8% of reports VISIBILITY 2 · 11.8% AIR BAGS: 1 complaints, 5.9% of reports AIR BAGS 1 · 5.9% · 1 crash reports STRUCTURE: 1 complaints, 5.9% of reports STRUCTURE 1 · 5.9% UNKNOWN OR OTHER: 5 complaints, 29.4% of reports UNKNOWN OR OTHER 5 · 29.4% 0% 25% 50% 75% 100%

UNKNOWN OR OTHER is an NHTSA classification artifact and is always listed last.

View component data as a table
System / Component Complaints Share of Reports Safety Reports (Crashes / Fires)
ENGINE 4 23.5% 0 crashes · 0 fires
POWER TRAIN 3 17.7% 1 crashes · 0 fires
VEHICLE SPEED CONTROL 2 11.8% 0 crashes · 0 fires
VISIBILITY 2 11.8% 0 crashes · 0 fires
AIR BAGS 1 5.9% 1 crashes · 0 fires
STRUCTURE 1 5.9% 0 crashes · 0 fires
UNKNOWN OR OTHER 5 29.4% 0 crashes · 0 fires
NHTSA Consumer Complaints, NHTSA Safety Recalls, and NHTSA Defect Investigations Snapshot 2026-08-22 Open source record Read our complete data methodology →

Complaint counts reflect self-selected reports and are not normalised for production sales volume. We publish no reliability scores, superlatives, or vehicle rankings.

Problem & Recall Timeline

Observed complaint volume and manufacturer recall actions over time

Problem & Recall Timeline Owner reports in this snapshot begin in Jan 2018; the first recall shown was reported in Oct 2018. 2018-Q1: 1 owner reports 1 2018-Q2: 1 owner reports 1 2018-Q4: 2 owner reports 2 2019-Q1: 1 owner reports 1 2019-Q2: 1 owner reports 1 2020-Q4: 1 owner reports 1 2021-Q4: 1 owner reports 1 2022-Q1: 2 owner reports 2 2022-Q3: 1 owner reports 1 2023-Q3: 1 owner reports 1 2024-Q2: 1 owner reports 1 2024-Q4: 2 owner reports 2 2025-Q4: 1 owner reports 1 2026-Q2: 1 owner reports 1 Owner reports Jan 2018 Apr 2026 Recall campaign 18V704000 ◆ Recall campaign 18V704000 Recall campaign 21V944000 ◆ Recall campaign 21V944000 Recall campaign 22V459000 ◆ Recall campaign 22V459000 Investigation DP22005 ● Investigation DP22005 Investigation DP22005 ● Investigation DP22005 Investigation DP22005 ● Investigation DP22005
  • Campaign 22V459000 was reported 1,349 days after the first earlier complaint mapped to its component.
View timeline records as a table
Date Record type Count Record identifier
2018-Q1 Owner reports 1
2018-Q2 Owner reports 1
2018-Q4 Owner reports 2
2019-Q1 Owner reports 1
2019-Q2 Owner reports 1
2020-Q4 Owner reports 1
2021-Q4 Owner reports 1
2022-Q1 Owner reports 2
2022-Q3 Owner reports 1
2023-Q3 Owner reports 1
2024-Q2 Owner reports 1
2024-Q4 Owner reports 2
2025-Q4 Owner reports 1
2026-Q2 Owner reports 1
Recall campaign 1 18V704000
Recall campaign 1 21V944000
Recall campaign 1 22V459000
Defect investigation 1 DP22005
Defect investigation 1 DP22005
Defect investigation 1 DP22005
NHTSA Safety Recalls Snapshot 2026-08-22 Open source record Read our complete data methodology →

Safety Recalls (3)

Official safety recall campaigns filed with NHTSA

  1. Manufacturer action

    Recall campaign 18V704000

    Report date
    Component:
    HYBRID PROPULSION SYSTEM
    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 customer service at 1-855-371-9460. Hyundai's number for this recall is 178.
    View authoritative NHTSA record →

  2. Manufacturer action

    Recall campaign 21V944000

    Report date
    Component:
    ELECTRICAL SYSTEM
    Consequence:
    Unexpected acceleration following gas pedal release can increase the risk of a crash.
    Remedy:
    Dealers will update the EPCU (Electric Power Control Unit) software and repair the ground wiring, free of charge. Owner notification letters were mailed February 9, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 215.
    View authoritative NHTSA record →

  3. Manufacturer action

    Recall campaign 22V459000

    Report date
    Component:
    HYBRID PROPULSION SYSTEM
    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.
    View authoritative NHTSA record →
NHTSA Consumer Complaints Snapshot 2026-08-21 Open source record Read our complete data methodology →

Complaint counts reflect self-selected reports and are not normalised for production sales volume. We publish no reliability scores, superlatives, or vehicle rankings.

Complaint Narrative Explorer

Verbatim owner-reported defect narratives from NHTSA public records

Data: NHTSA Office of Defects Investigation · snapshot 2026-08-21
Safety incident filters
Showing 0 of 17 complaints · page 1 of 1

No complaints match the current filters.
EPA Fuel Economy Database Snapshot 2026-08-21 Open source record Read our complete data methodology →

Estimated Ownership Cost

EPA fuel economy ratings and annual operating cost estimates

Data: US EPA Fuel Economy Guide · snapshot 2026-08-21
Supported range: 1,000–60,000 miles per year
Supported range: $1.50–$10.00 per gallon
55% city45% highway
Estimate unavailable

EPA fuel-economy data is unavailable for this vehicle.

No estimate is shown when required EPA values are unavailable.

 Open Ownership Cost Calculator →

Adjacent Model Years

Immediate preceding and succeeding model year records

NHTSA Consumer Complaints Snapshot 2026-08-21 Open source record Read our complete data methodology →

Complaint counts reflect self-selected reports and are not normalised for production sales volume. We publish no reliability scores, superlatives, or vehicle rankings.

Methodology & Data Integrity

Data sourced from NHTSA Office of Defects Investigation. Snapshot date: 2026-08-21.

Read our complete data methodology → Sources