2023 Kia EV6 fuel/propulsion system problems
29 owner complaints filed with NHTSA name the fuel/propulsion system on the 2023 Kia EV6 — 22% of all complaints for this model year.
What owners report
“First ICCU the power completely went out on 2/23/26. Power went out again April, 2026. Currently car is immobile and unreliable and not safe for driving due to power failures. Towed car to Kia Cerritos. Car supposedly "fixed" (with other issues I've reported to KIA of America & CA BAR/DMV)…”
filed Jun 14, 2026
“The ICCU unit failed. The message "Check Electrical System" appeared on the instrument cluster. Low-voltage battery voltage was 12.0V and vehicle speed was limited to 60 mph. Maximum speed was gradually reduced to 30 mph over a period of 40 minutes (voltage was 11.5 V) with minimal 12V loads. I…”
filed May 12, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
WARRANTY EXTENSION CAMPAIGN: QUESTION AND ANSWER (WTY044) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Warranty Extension Campaign WTY044.
WTY044_QA · Warranty Program/Extension · issued Apr 22, 2026WARRANTY EXTENSION CAMPAIGN: OWNER NOTIFICATION (WTY044) - This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain repairs related to…
WTY044_OWNR · Warranty Program/Extension · issued Apr 22, 2026WARRANTY EXTENSION CAMPAIGN: REIMBURSEMENT FORM (WTY044) - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs for this…
WTY044_REIMB · Warranty Program/Extension · issued Apr 21, 2026WARRANTY EXTENSION CAMPAIGN: DEALER PRINCIPAL MEMO (WTY044) - This document is the announcement to the dealer principals advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain…
WTY044_DP · Warranty Program/Extension · issued Apr 21, 2026
Fuel/propulsion System problems in other EV6 years
| Year | Reports | Share |
|---|---|---|
| 2025 EV6 | 9 | 18% |
| 2024 EV6 | 14 | 20% |
| 2022 EV6 | 43 | 16% |
Other reported problem areas on the 2023 Kia EV6
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.