2021 Hyundai Ioniq Hybrid problems, complaints & recalls
Most-reported problem areas: Electrical System (3) · Vehicle Speed Control (2) · Service Brakes (2)
🧭 Reliability snapshot
Compared against other Hyundai Ioniq Hybrid model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (27)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System 2026-10-27 · 26-GI-003H · Service Bulletin/Repair Instructions
this bulletin provides information related to the navigation and head unit software changes introduced in the 2026 2nd navigation map and software update. the changes may vary depending on vehicle type, model, and navigation system. refer to the 2026 2nd navigation map and software update key improv
Engine 2026-10-08 · 26-EM-016H TSB · Service Bulletin/Repair Instructions
some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. this bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. all internal combustion engines consume some engine oil during normal operatio
Engine 2026-10-07 · 26-EM-015H TSB · Service Bulletin/Repair Instructions
certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. this bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. all internal combustion engines consume engine oil as part of normal engine operatio
Air Bags 2026-04-10 · DTN DL · Other
the national highway traffic safety administration (nhtsa) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by jilin province detiannuo automobile safety system co., ltd. (dtn). these inflators were not supplied, approved, or authorized by the vehi
Air Bags 2026-04-10 · DTN DCS · Other
the national highway traffic safety administration (nhtsa) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by jilin province detiannuo automobile safety system co., ltd. (dtn), that have been identified in u.s. vehicles following prior
Exterior Lighting 2025-11-06 · 25-BD-012H TSB · Service Bulletin/Repair Instructions
this bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (drl), or fog lamp. this tsb illustrates the various causes of condensation inside the lamp assembly. lamp assembly replacement is not necessary
Showing the 6 most recent of 27 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-05-08 · Engine · 73,020 mi“the contact owns a 2021 hyundai ioniq hybrid. the contact stated that upon depressing the accelerator pedal, there was an abnormal ratting sound coming from the vehicle, and the vehicle failed to accelerate as needed. the contact stated that the check engine and oil warning lights were illuminated on the instrument panel. the vehicle was taken to a…”
2024-10-06 · Service Brakes“auto brake fault has been a constant issue with this 2021 hyundai ioniq hybrid. this causes lots of system functions to stop working (adaptive crusice control, lane keeping assistant, etc.) the dealer originally replaced the wiring harness, but it came back again and again with the same issue. they finally figured out that replacing the rear calip…”
2024-05-13 · Unknown Or Other“on a recurring basis, the warning lights come on for”auto hold” and “epb” or emergency parking brake. car continually beeps and gives warning until car is reset. during this time, the cruise control will turn off, causing safety issues during travel. also, the other safety features seem to stop working during the time this warning is activated. …”
2023-08-30 · Electrical System:adas:parking Assist:sensors · 16,000 mi“the contact owns a 2021 hyundai ioniq hybrid. the contact stated that while driving at various highway speeds, the electronic parking brake and auto hold indicator lights erroneously activated. the cause of the failure was not yet determined. the local dealer was notified of the failure, but no assistance was offered. the manufacturer was not yet c…”
2023-08-06 · Vehicle Speed Control“i’m driving with cruise control on the highway at 65 and all of a sudden it shuts off. the check cruise system light comes on along with a triangle with an exclamation point in the middle of it in the lower left side of dashboard and the letters epb lights up on the lower right side of dashboard.…”
2022-09-13 · Service Brakes · 19,000 mi“the contact owns a 2021 hyundai ioniq hybrid. the contact stated while driving at an undisclosed speed, the electronic parking brake warning light, the auto-hold feature warning light, and other unknown warning lights were illuminated. the contact veered to the side of the road. the contact turned off and restarted the vehicle; however, the failure…”
2022-08-22 · Unknown Or Other“when driving down the highway the cruise control will turn off and it is during sunny days and has happened many times. the check lane following assist lfa system notice comes on, the smart cruise ctrl conditions not met notice come on, the check smart cruise control system notice comes on, auto hold, epb and two triangles appear. happened 4/2, 4…”
2022-08-22 · Back Over Prevention: Sensing System: Camera“the backup mirror remained on while driving down the road.…”
2022-08-22 · Unknown Or Other“the apple car play system quits when you are using maps.…”
2022-08-19 · Electrical System“owner of 2021 hyundai hybrid ioniq. auto hold and epb (electronic parking brake) malfunction lights come on randomly. after inspection at dealership electronic brake control module needs replacing, not communicating with car module is currently on backorder and may take six weeks for part to come in. dealership's service dept. fully understood…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.