2025 Hyundai Ioniq 5 Transmission & Power Train Problems
NHTSA component category: POWER TRAIN · data through 09/08/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How power train ranks on this vehicle
Share of the 295 complaints citing each category; one complaint can cite several. Full breakdown on the 2025 Hyundai Ioniq 5 overview page.
What owners report
“The ICCU unit failed causing the car to first have low power, reducing the maximum vehicle speed to 25 MPH, then causing the 12V battery…”NHTSA complaint 11708035 — filed 12/31/2025
“I was driving on the freeway in the left lane when suddenly a bunch of error lights popped up on the dash and the car…”NHTSA complaint 11707957 — filed 12/31/2025
“On the afternoon of Saturday, December 12th 2025 I was preparing my car for a trip an hour north and back to drop my daughter…”NHTSA complaint 11707799 — filed 12/30/2025
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Power Train complaints by year filed
Frequently asked questions
Does the 2025 Hyundai Ioniq 5 have transmission & power train problems?
Power Train is the #3 most-reported problem area on the 2025 Hyundai Ioniq 5: 56 of 295 complaints on file (19%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2025 Hyundai Ioniq 5 have in total?
295 complaints were on file with NHTSA as of 09/08/2026. Across all categories, 3 involved a crash, 0 involved a fire, 2 reported injuries, and none reported deaths.
What does NHTSA's power train category include?
NHTSA groups complaints about the transmission (automatic or manual), driveline, axles, transfer case and related parts under a single component category called POWER TRAIN. This page reports that category as NHTSA defines it.
