Given its rather diminutive dimensions, the Scion iQ scores pretty well in nationally recognized crash testing.
As with the Smart ForTwo, the iQ proves you can provide decent occupant crash protection in a very, very small car. The little Scion has no fewer than 11 airbags—including driver and front passenger knee bags, and that world-first rear-window bag to protect passengers' heads if hit from the (very truncated) rear.
The National Highway Traffic Safety Administration (NHTSA) awards an overall rating of four stars out of five to the iQ . Frontal crash and rollover testing also earn four stars, but the iQ gets only three stars in the NHTSA's side-impact tests.
The iQ receives a 'good' rating from the Insurance Institute for Highway Safety (IIHS) for moderate-overlap front crash, side impact, and roof strength tests. Despite a unique rear-window curtain airbag, however, its head restraints and seats are only deemed 'acceptable.' The iQ has not been rated on the IIHS's new small-impact front crash test.
Nonetheless, as bystanders often suggest, the laws of physics are inescapable. As long as the majority of vehicles on the road are larger and heavier, the iQ may be at a safety disadvantage.