Over 200 people are killed each year when backed over by motor vehicles. The 911 (except Manual/GT3) offers an optional Maneuvering Assist that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The F80 doesn’t offer backup collision prevention brakes.
A passive infrared night vision system optional on the 911 helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The F80 doesn’t offer a night vision system.
The 911 offers an optional Surround View to allow the driver to see objects all around the vehicle on a screen. The F80 only offers a rear monitor.
To help make backing out of a parking space safer, the 911’s optional Rear Cross Traffic Alert uses sensors in the rear to alert the driver to vehicles approaching from the side and automatically engage the brakes. The F80 doesn’t offer a rear cross-path warning system.
Both the 911 and the F80 have standard driver and passenger frontal airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, lane departure warning systems, rearview cameras, driver alert monitors, available crash mitigating brakes and blind spot warning systems.

