Both the Discovery and Edge have child safety locks to prevent children from opening the rear doors. The Discovery 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 Edge’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.
When descending a steep, off-road slope, the Discovery’s standard Hill Descent Control allows you to creep down safely. The Edge doesn’t offer Hill Descent Control.
The Discovery has a standard 3D Surround Camera to allow the driver to see objects all around the vehicle on a screen. The Edge only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
Both the Discovery and Edge have rear cross-traffic warning, but the Discovery has Rear Traffic Braking (automatically applies the brakes) to better prevent a collision when backing near traffic. The Edge’s Cross Traffic Alert doesn’t automatically brake.
Both the Discovery and the Edge have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, four-wheel antilock brakes, all wheel drive, 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 driver alert monitors.

