In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Hyundai Tucson Hybrid achieved a “Acceptable” rating - the second highest possible - for its performance in forward collision warning and automatic braking systems, demonstrating its excellent capabilities in preventing collisions. The Toyota Prius has not been tested.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Tucson Hybrid. But it costs extra on the Prius.
When descending a steep, off-road slope, the Tucson Hybrid’s standard Downhill Brake Control allows you to creep down safely. The Prius doesn’t offer Downhill Brake Control.
To help make backing out of a parking space safer, the Tucson Hybrid has standard Rear Cross-Traffic Collision Warning with Rear Cross-Traffic Collision-Avoidance Assist, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Parking Support Brake costs extra on the Prius.
Both the Tucson Hybrid and the Prius have standard driver and passenger frontal airbags, front and rear side-impact 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, 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.

