Maserati Spyder Owner's Manual page 32

In the event of a collision,
anyone not wearing a seat
belt will be thrown forward
and will come into contact with the
bag before it is fully inflated. This
reduces the protection offered by the
bag. It follows that the front airbags
(driver and passenger side) do not
2 replace or substitute the seat belts but
complement them, and hence the seat
belts must always be worn as
provided by established European
legislation and in most other parts of
the world.
32 Front and side airbags
In case of low impact head on collisions
(in which the retaining action of the
seat belts affords adequate
protection), the airbags do not inflate.
In case of rear collisions (e.g. impact
from behind by another vehicle) and
side collisions, the airbags do not
inflate as they do not offer any
additional protection.
Therefore the bag's failure in these
cases is not an indication of a system
malfunction.
Passenger side airbag
(full size airbag)
The passenger side airbag is designed
to afford supplementary protection to
a person wearing the seat belt.
It therefore inflates to fill the larger
part of the space between the
occupant and the dashboard.
SERIOUS HAZARD: the
vehicle is fitted with a
passenger side airbag.
Before mounting a child seat on the
passenger seat, always de-activate the
passenger side airbag. Even where not
required by the law, we recommend
for the safety of adult passengers that
the airbag be immediately re-
activated as soon as the seat is no
longer in use for child transport.