Both the Mustang Mach-E and Ioniq Electric have child safety locks to prevent children from opening the rear doors. The Mustang Mach-E 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 Ioniq Electric’s 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.
The Mustang Mach-E has standard Post Collision Braking, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Ioniq Electric doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
Over 200 people are killed each year when backed over by motor vehicles. The Mustang Mach-E has a standard Reverse Brake Assist that use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Ioniq Electric doesn’t offer backup collision prevention brakes.
The Mustang Mach-E offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Ioniq Electric doesn’t offer all-wheel drive.
The Mustang Mach-E offers an optional 360-Degree Camera to allow the driver to see objects all around the vehicle on a screen. The Ioniq Electric only offers a rear monitor.
To help make backing out of a parking space safer, the Mustang Mach-E has a standard rear cross-path warning system, which uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. Rear cross-path warning costs extra on the Ioniq Electric.
Both the Mustang Mach-E and the Ioniq Electric have standard driver and passenger frontal airbags, front side-impact airbags, driver knee 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, rearview cameras and driver alert monitors.
The Ford Mustang Mach-E weighs 947 to 1591 pounds more than the Hyundai Ioniq Electric. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, with its optional vehicle-to-pedestrian front crash prevention system, and its available headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the Mustang Mach-E the rating of “Top Safety Pick” for 2022, a rating granted to only 137 vehicles tested by the IIHS. The Ioniq Electric has not been tested, yet.