2021 Hyundai IONIQ HYBRID problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
13 owner complaints analyzed
0 distinct recall campaigns
17,500 mi median reported failure mileage
Scope: 2021 model year. Data snapshot: . 4 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 6 of 13 complaints (46.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 5 | 38.5% |
| Electrical and battery issues | 1 | 7.7% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 6 |
| Forward Collision Avoidance: Adaptive Cruise Control | 3 |
| Service Brakes | 3 |
| Unknown Or Other | 3 |
| Vehicle Speed Control | 2 |
| Back Over Prevention: Sensing System: Camera | 1 |
| Electrical System:Adas:Parking Assist:Sensors | 1 |
| Engine | 1 |
Electrical System: 6; Forward Collision Avoidance: Adaptive Cruise Control: 3; Service Brakes: 3; Unknown Or Other: 3; Vehicle Speed Control: 2; Back Over Prevention: Sensing System: Camera: 1; Electrical System:Adas:Parking Assist:Sensors: 1; Engine: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 3 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 1 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 3; 25,000 to 49,999: 0; 50,000 to 74,999: 1; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (3). 9 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2021 | 2 |
| 2022 | 6 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
2021: 2; 2022: 6; 2023: 2; 2024: 2; 2025: 1
Pattern summary
Electrical System leads the component reports. Braking behavior appears in 5 complaint narratives. Electrical and battery issues appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11480269 · 2022-08-19 (August 19, 2022)
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 what repair is needed and is taking care of the problem. We were strongly advised NOT TO DRIVE the car until repaired. Vehicle could possibly auto stop going at high speeds. Dealership provided a …
Owner-reported narrative. Look up ODI 11480269 at NHTSA ↗
Owner report 11484263 · 2022-09-13 (September 13, 2022)
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 persisted. The contact was able to continue driving. The vehicle was taken to the local dealer where it was diagnosed that the brake caliper had failed and needed to be replaced; however, parts were …
Owner-reported narrative. 19,000 miles reported. Look up ODI 11484263 at NHTSA ↗
Owner report 11618338 · 2024-10-06 (October 6, 2024)
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 calipers seemed to make it stop. They have done that twice and this past weekend the fault warning appeared again. So, for the 4th time, we will be taking the car back in so this error goes away. For addit…
Owner-reported narrative. Look up ODI 11618338 at NHTSA ↗