For enhanced safety, the front and rear seat shoulder belts of the Bentley Continental GT 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 M8 doesn’t offer pretensioners for its rear seat belts.
An active infrared night vision system optional on the Continental GT helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then displays the image on a monitor in the dashboard. The M8 doesn’t offer a night vision system.
Both the Continental GT and M8 have rear cross-traffic warning, but the Continental GT has Reversing Traffic Warning (automatically applies the brakes) to better prevent a collision when backing near traffic. The M8’s Cross Traffic Warning doesn’t automatically brake.
Both the Continental GT and the M8 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras and rear cross-path warning.
The Bentley Continental GT weighs 861 to 1516 pounds more than the BMW M8. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

