To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Q4 e-tron Sportback. But it costs extra on the Polestar 2.
To help make backing out of a parking space safer, the Q4 e-tron Sportback has a standard rear cross-path warning system, which uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. Rear cross-path warning costs extra on the Polestar 2.
Both the Q4 e-tron Sportback and the Polestar 2 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front 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, lane departure warning systems, rearview cameras and available around view monitors.

