In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Ioniq 5 are reminded to check the back seat if they opened the rear door before starting out. The Q4 e-tron doesn’t offer a back seat reminder.
With its standard Forward Collision-Avoidance Assist, the Hyundai Ioniq 5 is better at preventing collisions with pedestrians than the Audi Q4 e-tron, according to the Insurance Institute for Highway Safety:
|
|
Ioniq 5 |
Q4 e-tron |
| Overall Evaluation |
GOOD |
ACCEPTABLE |
|
|
Crossing Child - DAY |
|
| 12 MPH |
AVOIDED |
AVOIDED |
| 25 MPH |
-19 MPH |
-15 MPH |
|
|
Crossing Adult - NIGHT |
|
| 12 MPH Brights |
AVOIDED |
AVOIDED |
| 12 MPH Low beams |
AVOIDED |
AVOIDED |
| 25 MPH Brights |
AVOIDED |
-21 MPH |
| 25 MPH Low beams |
AVOIDED |
-24 MPH |
|
|
Parallel Adult - NIGHT |
|
| 25 MPH Brights |
AVOIDED |
AVOIDED |
| 25 MPH Low beams |
AVOIDED |
AVOIDED |
| 37 MPH Brights |
AVOIDED |
-21 MPH |
| 37 MPH Low beams |
-32 MPH |
-22 MPH |
In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Hyundai Ioniq 5 achieved a “Acceptable” rating - the second highest possible - for its performance in forward collision warning and automatic braking systems, demonstrating its excellent capabilities in preventing collisions. The Audi Q4 e-tron has not been tested.
When descending a steep, off-road slope, the Ioniq 5’s standard Downhill Brake Control allows you to creep down safely. The Q4 e-tron doesn’t offer Downhill Brake Control.
The Ioniq 5’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Q4 e-tron doesn’t offer a driver alert monitor.
Both the Ioniq 5 and the Q4 e-tron have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front 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 and available around view monitors.
The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Hyundai Ioniq 5 is safer than the Audi Q4 e-tron:
|
|
Ioniq 5 |
Q4 e-tron |
|
|
Passenger |
|
| STARS |
4 Stars |
4 Stars |
| HIC |
202 |
264 |
| Chest Compression |
.7 inches |
.8 inches |
| Neck Stress |
97 lbs. |
102 lbs. |
| Neck Compression |
83 lbs. |
132 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
The Insurance Institute for Highway Safety does 40 MPH moderate front offset crash tests on new cars. In this updated test, results indicate that the Ioniq 5 is much safer than the Q4 e-tron:
|
|
Ioniq 5 |
Q4 e-tron |
| Overall Evaluation |
GOOD |
POOR |
| Structure |
GOOD |
GOOD |
|
|
Driver Injury Measures |
|
| Head/Neck Rating |
GOOD |
GOOD |
| Head Injury Criterion |
106 |
234 |
| Chest Rating |
GOOD |
GOOD |
| Thigh/hip Rating |
GOOD |
GOOD |
| Leg/foot Rating |
GOOD |
GOOD |
| Restraints |
GOOD |
GOOD |
|
|
Rear Passenger Injury Measures |
|
| Head/Neck Rating |
GOOD |
GOOD |
| Chest Rating |
GOOD |
POOR |
| Thigh Rating |
GOOD |
GOOD |
| Restraints |
GOOD |
MARGINAL |
The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a post at 20 MPH, results indicate that the Hyundai Ioniq 5 is safer than the Audi Q4 e-tron:
|
|
Ioniq 5 |
Q4 e-tron |
|
|
Into Pole |
|
| STARS |
5 Stars |
3 Stars |
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 3% less likely to roll over than the Q4 e-tron, 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 2026 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, a “Good” score in the revised pedestrian crash prevention test, and an “Acceptable” score in the revised vehicle-to-vehicle crash prevention test. The Q4 e-tron is not even a standard “Top Safety Pick” for 2026.

