Both the Ioniq 5 and Prius have child safety locks to prevent children from opening the rear doors. The Ioniq 5 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The Prius’ child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
When descending a steep, off-road slope, the Ioniq 5’s standard Downhill Brake Control allows you to creep down safely. The Prius doesn’t offer Downhill Brake Control.
To help make backing out of a parking space safer, the Ioniq 5 has standard Rear Cross-Traffic Collision Warning with Rear Cross-Traffic Collision-Avoidance Assist, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Parking Support Brake costs extra on the Prius.
Both the Ioniq 5 and the Prius have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.
The Hyundai Ioniq 5 weighs 804 to 1764 pounds more than the Toyota Prius. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.
The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Hyundai Ioniq 5 is safer than the Toyota Prius:
|
|
Ioniq 5 |
Prius |
|
|
Front Seat |
|
| STARS |
5 Stars |
5 Stars |
| HIC |
75 |
167 |
| Chest Movement |
.7 inches |
.9 inches |
| Hip Force |
261 lbs. |
290 lbs. |
|
|
Rear Seat |
|
| STARS |
5 Stars |
5 Stars |
| HIC |
267 |
467 |
|
|
Into Pole |
|
| STARS |
5 Stars |
5 Stars |
| Max Damage Depth |
7 inches |
11 inches |
| HIC |
252 |
384 |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the Ioniq 5, with its five-star roll-over rating, is 1.9% less likely to roll over than the Prius, which received a four-star rating.
The Hyundai Ioniq 5 has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2025 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, and an “Acceptable” score in the revised pedestrian crash prevention test. The Prius has not yet been fully evaluated by the IIHS for 2025.