The Bentley Flying Spur has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The CLS doesn’t offer a front passenger side knee airbag.
The Flying Spur has standard whiplash protection, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the whiplash protection system moves the headrests forward to prevent neck and spine injuries. The CLS doesn’t offer a whiplash protection system.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Flying Spur. But it costs extra on the CLS.
An active infrared night vision system optional on the Flying Spur 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 projects the image on the windshield, near the driver’s line of sight. The CLS doesn’t offer a night vision system.
To help make backing out of a parking space safer, the Flying Spur has standard Reversing Traffic Warning and automatically engage the brakes. Mercedes charges extra for Rear Cross-Traffic Alert on the CLS.
Both the Flying Spur and the CLS have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras and available lane departure warning systems.
The Bentley Flying Spur weighs 882 to 1268 pounds more than the Mercedes CLS. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.