For enhanced safety, the front and rear seat shoulder belts of the Mercedes AMG GT 4-Door have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The BMW M8 doesn’t offer pretensioners for its rear seat belts.
For enhanced safety, the front seat shoulder belts of the Mercedes AMG GT 4-Door 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 M8 doesn’t offer height-adjustable seat belts.
Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The AMG GT 4-Door has Car-to-X, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The M8 doesn’t offer a system that can receive automated systems from other vehicles.
The AMG GT 4-Door has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the M8’s blind spot costs extra.
To help make backing out of a parking space safer, the AMG GT 4-Door has standard Rear Cross-Traffic Alert and Rear Cross Traffic Brake automatically engages the brakes to help avoid a collision. BMW charges extra for Cross Traffic Warning on the M8 and the M8’s Cross Traffic Warning does not include automatic braking.
Both the AMG GT 4-Door and the M8 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee 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, rearview cameras, driver alert monitors and available lane departure warning systems.