Hyundai Ioniq 9 vs Lexus IS 300
Both cars' complete complaint records, side by side.
Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.
| Measure | Hyundai Ioniq 9 | Lexus IS 300 |
|---|---|---|
| Complaints on file | 64 | 156 |
| Model years covered | 2026–2026 | 2001–2022 |
| Worst model year | — | 2002 |
| Best model year | — | 2004 |
| Crashes reported | 0 | 32 |
| Fires reported | 0 | 7 |
| Injuries reported | 5 | 18 |
| Deaths reported | 0 | 0 |
| Most complained-about part | Electrical System | Body & Structure |
| Share of complaints involving harm | 7.8% | 36.5% |
Hyundai Ioniq 9 by year
26
What breaks
Electrical System
20
31.3%
Driver Assist & Collision Avoidance
11
17.2%
Fuel & Propulsion
9
14.1%
Transmission & Drivetrain
6
9.4%
Acceleration & Cruise Control
4
6.3%
Other & Unspecified
4
6.3%
Engine & Cooling
2
3.1%
Seats
2
3.1%
Lexus IS 300 by year
What breaks
Body & Structure
22
14.1%
Acceleration & Cruise Control
18
11.5%
Other & Unspecified
18
11.5%
Suspension
14
9.0%
Transmission & Drivetrain
12
7.7%
Engine & Cooling
11
7.1%
Brakes
11
7.1%
Tires
11
7.1%