To provide maximum traction and stability on all roads, Full-Time Four-Wheel Drive is standard on the GX. But it costs extra on the Aviator.
Both the GX and the Aviator have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger 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, post-collision automatic braking systems, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.
The Lexus GX weighs 723 to 965 pounds more than the Lincoln Aviator. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

