Hyundai Ioniq 5
Problems & Worst Years

Hyundai's dedicated electric crossover carries a complaint record that reads almost like a single-issue file: the Integrated Charging Control Unit, or ICCU, shows up as the top-reported problem in every one of the four model years tracked, under a handful of slightly different titles. In the 2022 launch year, which drew the highest total of any year at 394 complaints, ICCU failure alone accounts for 110 reports, with power loss during driving (65 reports) and battery management system failure (54 reports) close behind — none of which were rated safety-severity that year, but three recall campaigns (22V324, 24V204, 24V868) followed regardless.

The 2023 model year is smaller in raw count (249 complaints) but far more serious: 6 of its 13 logged problems carry NHTSA's safety flag, and ICCU failure alone accounts for 143 reports, now explicitly rated safety-critical, alongside stranding incidents caused by electrical failures (20 reports) and a notable complaint that brake lights don't illuminate during regenerative braking (14 reports) — a real hazard for the car behind. Recalls 24V204, 24V868, and 26V432 all apply. The 2024 model year (153 complaints, 3 safety-rated) shifts the language toward dashboard warnings and limp mode (55 reports) but the underlying cause is still ICCU-related in most of the top complaints, and the same three 2023 recall campaigns carry forward. The most recent year, 2025, sees complaint volume climb back up to 273 with ICCU failure again leading at 102 reports and 12-volt battery drain tied to the same component adding 52 more, this time under three different campaign numbers: 25V064, 25V482, and 26V068.

Taken together, four consecutive model years point at the same charging hardware as the car's dominant weak point, which is unusual consistency for a complaint dataset and suggests this is a known, well-documented issue rather than a fluke. The number of associated recalls suggests Hyundai has been actively working the problem, but a buyer should verify which recall work has actually been completed on any specific car rather than assuming it. Keep in mind these figures are owner-filed reports, not a lab-measured failure rate — a pre-purchase check of recall completion status and a look at the car's charging history matter more here than almost any other used vehicle on this list.