The E-Class All-Terrain Wagon’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The QX50 doesn’t offer pre-crash pretensioners.
The E-Class All-Terrain Wagon 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 QX50 doesn’t offer a whiplash protection system.
The E-Class All-Terrain Wagon has a standard Post Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The QX50 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the E-Class All-Terrain Wagon. But it costs extra on the QX50.
When descending a steep, off-road slope, the E-Class All-Terrain Wagon’s standard Downhill Speed Regulation allows you to creep down safely. The QX50 doesn’t offer Downhill Speed Regulation.
Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The E-Class All-Terrain Wagon has Car-to-X Communication, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The QX50 doesn’t offer a system that can receive automated systems from infrastructure or other vehicles.
Both the E-Class All-Terrain Wagon and QX50 have rear cross-traffic warning, but the E-Class All-Terrain Wagon has Active Brake Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The QX50’s Rear Cross Traffic Alert doesn’t automatically brake.
The E-Class All-Terrain Wagon’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The QX50 doesn’t offer a driver alert monitor.
Both the E-Class All-Terrain Wagon and the QX50 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, rear cross-path warning and available lane departure warning systems.