For enhanced safety, the front and middle seat shoulder belts of the Bentley Bentayga have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The BMW X5 M doesn’t offer pretensioners for the middle seat belts.
For enhanced safety, the front seat shoulder belts of the Bentley Bentayga 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 X5 M doesn’t offer height-adjustable seat belts.
Both the Bentayga and X5 M have child safety locks to prevent children from opening the rear doors. The Bentayga 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 X5 M’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 Bentayga has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The X5 M doesn’t offer a whiplash protection system.
A passive infrared night vision system optional on the Bentayga 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 projects the image on the windshield, near the driver’s line of sight. The X5 M doesn’t offer a night vision system.
Both the Bentayga and the X5 M have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, around view monitors, rear cross-path warning, available collision warning systems and lane departure warning systems.