2026 Hyundai Ioniq 9: Reliability Data

Source: NHTSA — 21 complaints
21
Total Complaints
ELECTRICAL SYSTEM
Top Issue
0
Crash Reports

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM
7
FUEL/PROPULSION SYSTEM
3
SEATS
2
LANE DEPARTURE: ASSIST
2
POWER TRAIN
2
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
1
SERVICE BRAKES
1
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1
VEHICLE SPEED CONTROL
1
SEAT BELTS
1

Severity Assessment

0
Crashes
0
Fires
5
Injuries
0
Deaths

Sample Complaint Reports

"My ICCU failed, which caused a fuse to blow and some electrical wiring in the car to melt. This caused the car to completely deplete the 12V battery, which left the car completely inoperable. The vehicle was towed to a Hyundai dealership, where they ordered the relevant parts and changed them under..."
"Occasionally while driving my IONIQ 9 in sunny conditions with glasses on while utilizing Lane Keep Assist and the Adaptive Cruise Control system the car flashes a Warning about keeping your attention on the road, and then continues on beeping and chiming before ultimately completely stopping in the..."
"Occasionally while driving my IONIQ 9 in sunny conditions with glasses on while utilizing Lane Keep Assist and the Adaptive Cruise Control system the car flashes a Warning about keeping your attention on the road, and then continues on beeping and chiming before ultimately completely stopping in the..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28