For enhanced safety, the front and rear seat shoulder belts of the Mercedes G-Class 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 Jeep Grand Wagoneer L doesn’t offer pretensioners for its second-row seat belts.
The G-Class 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 Grand Wagoneer L 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 G-Class. But it costs extra on the Grand Wagoneer L.
Both the G-Class and Grand Wagoneer L have rear cross-traffic warning, but the G-Class has Active Brake Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The Grand Wagoneer L’s Rear Cross Path Detection doesn’t automatically brake.
Both the G-Class and the Grand Wagoneer L have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and driver alert monitors.

