The i7’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The EV6 doesn’t offer pre-crash pretensioners.
The i7 has standard PostCrash iBrake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The EV6 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, Full-Time All-Wheel Drive is standard on the i7. But it costs extra on the EV6.
Both the i7 and the EV6 have standard driver and passenger frontal airbags, front side-impact airbags, 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, driver alert monitors and available around view monitors.
The BMW i7 weighs 1378 to 1933 pounds more than the Kia EV6. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

