The Q4 e-tron Sportback’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The R2 doesn’t offer pre-crash pretensioners.
In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Q4 e-tron Sportback are reminded to check the back seat if they opened the rear door before starting out. The R2 doesn’t offer a back seat reminder.
The Q4 e-tron Sportback has a standard Secondary Collision Brake Assist, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The R2 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 Q4 e-tron Sportback. But it costs extra on the R2.
Both the Q4 e-tron Sportback and R2 have rear cross-traffic warning, but the Q4 e-tron Sportback has Automatic Brake Activation (automatically applies the brakes) to better prevent a collision when backing near traffic. The R2’s Rear Cross-Traffic Warning doesn’t automatically brake.
Both the Q4 e-tron Sportback and the R2 have standard driver and passenger frontal airbags, front side-impact 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 available around view monitors.

