YearToAvoid

2025 Hyundai Ioniq 5 Engine Problems

NHTSA has logged 36 engine-related complaints for the 2025 Hyundai Ioniq 5, 12% of its 297 total complaints. That share is lower than the 2022 (15%), 2023 (13%), and 2024 (13%) model years. No related recalls are listed for this component.

Engine complaints
36
12% of 297
Crashes reported
1
Fires reported
0
Injuries reported
1
Median mileage
—
Related recalls
0

Typical engine symptoms owners report

  • Vehicle surges or pulses at highway speeds of 60-65 mph and cannot hold a steady speed.
  • ICCU (Integrated Charge Control Unit) failures trigger a 'check battery' warning and limit top speed to around 25 mph, sometimes leaving the car undrivable.
  • A diagnostic trouble code tied to the ICCU's DC/DC converter input voltage sensor has appeared with no recall issued for it yet.
  • Owners report the vehicle unexpectedly entering reduced-power mode mid-drive, requiring a tow to a dealer.
  • Some vehicles failed to charge properly on AC or DC chargers shortly after purchase, with one car stalling three times at 290 miles.

When 2025 Hyundai Ioniq 5 engine complaints were filed

First complaint Aug 12, 2025, latest Sep 8, 2026.

2025 Hyundai Ioniq 5 engine complaints: complaints filed per month7Aug 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026
36 complaints filed with NHTSA from Aug 2025 to Sep 2026; peak Jan 2026 (7).

Engine recalls for the 2025 Hyundai Ioniq 5

No safety recalls on record for this model year.

Engine complaints by Ioniq 5 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 202261 (15%)
  2. 202352 (13%)
  3. 202428 (13%)
  4. 202536 (12%)

Frequently asked questions

Does the 2025 Hyundai Ioniq 5 have engine problems?
NHTSA lists 36 engine-related complaints for the 2025 Ioniq 5, making up 12% of its 297 total complaints. Owners most often describe highway speed surges and ICCU-related power loss.
Is the engine complaint rate higher for the 2025 Ioniq 5 than other years?
No. The 2025 model's 12% engine complaint share is lower than 2022 (15%), 2023 (13%), and 2024 (13%).
Is there a recall for the 2025 Ioniq 5 engine or ICCU?
No related recalls are listed in NHTSA data for this component on the 2025 Ioniq 5.
Have engine-related issues caused crashes or injuries in the 2025 Ioniq 5?
NHTSA records show 1 crash and 1 injury among the complaints filed for this vehicle, though not all are confirmed as engine-related.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.