Another good thing about this system is that it is completely reversible, requiring no dealer reset after a rear-end collision. The Opel Astra also scored high for passenger occupant protection in a frontal impact. ... This keeps the occupants' hips in place during a crash and makes knee airbags unnecessary. The car also features six airbags, a seat belt reminder system, a passenger airbag deactivation switch to allow child seats to be placed on the front passenger seat , ...