HIGH-LEVEL PASSIVE SAFETY
C4 boasts a wide array of passive safety features, including the
world’s first shape-optimised driver airbag. This feature, which relies
on the fixed central section of the steering wheel, improves driver
protection. The C4 also offers reinforced protection in the event of
frontal impact, and a design that reflects efforts to address
For increased security, the C4 is also well protected against theft and break-in.
A complete, reliable range of passive safety equipment
The C4 offers the following main passive safety features:
a shape-optimised driver airbag for improved driver protection,
driver and passenger dual-stage front airbags.
system adapts to the severity of impact: if impact is minor, only one
stage of the airbag will deploy, for high-level protection.
curtain airbags standard at front and rear;
driver and passenger chest airbags standard at front;
seatbelts with three anchor points, a force limiter and a warning light for all seats.
The front seatbelts are fitted with pyrotechnic pretensioners and are height-adjustable on the saloon.
A protective, reinforced structure
Improved cabin protection in the event of frontal impact
satisfy the most stringent passive safety evaluation requirements,
CitroŽn conducted extensive studies on protection from frontal impact.
C4 features an additional impact absorbing system on the lower part of
the front end to dissipate energy more effectively in the event of
frontal impact. This absorbing system is made up of a lower front
bumper beam, along with subframe extensions.
mechanical resistance of the front suspension and the lower subframe
has been optimised to enable, for example, energy to be transmitted
under the body in the event of frontal impact.
were conducted on the movement of hard incompressible parts in the
engine compartment in order to limit intrusions into the cabin.
front doors have been reinforced in order to better stiffen the whole.
Moreover, to reduce repair costs following minor impacts, the C4
features plastic front wings and an aluminium front upper bumper beam,
which is integral with the impact absorbers. In the event of impact,
the beam and impact absorbers crumple, without damaging the cantrails.
The same is true for the lower bumper beam, which will crumple without
damaging the engine subframe or its extensions.
Focus on pedestrian protection
The C4 is designed to reduce the consequences of possible pedestrian impact.
subframe is equipped with two impact absorbers (one on the top part of
the front end, the other on the lower part) to limit knee injury. The
bonnet, which is made of aluminium, features an inner panel, perforated
at the centre, to absorb energy more effectively.
also focused on achieving a non-aggressive front end. For example, the
boomerang-shaped headlamps are not only a key styling trait on the C4.
They also contribute to pedestrian protection, since the headlamps are
no longer on the top part of the bonnet.
Increased protection against theft and break-in
The C4 offers excellent protection against theft and break-in. Key features are as follows:
side laminated glazing to protect the occupants and their property,
a perimetric and volumetric alarm,
an engine immobiliser and transponder,
an unpickable electric boot lock,
antitheft nuts on each alloy wheel,
automatic relocking thirty seconds after the vehicle is unlocked if no door is opened,
automatic locking of the doors and boot as soon as the car starts to move.