For enhanced safety, the front seat shoulder belts of the Porsche Panamera are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The BMW M5 doesn’t offer height-adjustable seat belts.
Both the Panamera and M5 have child safety locks to prevent children from opening the rear doors. The Panamera 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 M5’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.
A passive infrared night vision system optional on the Panamera 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 and even aims one of the vehicle’s headlights in the direction of the person or object. The M5 doesn’t offer a night vision system.
Both the Panamera and M5 have rear cross-traffic warning, but the Panamera has Rear Cross Traffic Alert (automatically applies the brakes) to better prevent a collision when backing near traffic. The M5’s Cross Traffic Warning doesn’t automatically brake.
Both the Panamera and the M5 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, 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, available all wheel drive and around view monitors.