Using vehicle speed sensors and seat sensors, smart airbags in the Insight deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The Insight’s side airbags will shut off if a child is leaning against the door. The Prius Prime’s airbags don’t have smart features and will always deploy full force.
The Insight has a standard blind spot warning system which uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. Only the Prius Prime Limited offers a blind spot warning system.
To help make backing out of a parking space safer, the Insight has a standard 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. Only the Prius Prime Limited has a cross-path warning system.
Compared to metal, the Insight’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Toyota Prius Prime has a metal gas tank.
Both the Insight and the Prius Prime have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, 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 driver alert monitors.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, its standard vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the Insight its highest rating: “Top Pick Plus” for 2021, a rating granted to only 62 vehicles tested by the IIHS. The Prius Prime last would have qualified as only a standard “Top Pick” for 2019.