DS 4

The passenger compartment of the DS 4 remained stable in the frontal offset test. Dummy numbers showed good protection of the knees and femurs of both the driver and passenger. DS showed that a similar level of protection would be provided to occupants of different sizes and to those sitting in different positions.  Dummy readings of compression indicated marginal protection of the driver’s chest.  Analysis of the deceleration of the impact trolley during the test, and analysis of the deformable barrier after the test, revealed that the DS 4 would be a moderately aggressive impact partner in a frontal collision. In the full width rigid barrier test, readings of chest compression in the front seat dummy indicated a marginal level of protection for this body area, but that of all others was good or adequate for both the driver and rear seat passenger. In the side barrier test, protection of all critical body areas was good and the car scored maximum points in this part of the assessment. In the more severe side pole impact, protection of the chest was rated as marginal. Control of excursion (the extent to which a body is thrown to the other side of the vehicle when it is hit from the far side) was found to be good.  The DS 4 has a counter-measure to mitigate against occupant to occupant injuries in such impacts and this performed well in Euro NCAP's test. Tests on the front seats and head restraints demonstrated good protection against whiplash injuries in the event of a rear-end collision.  A geometric analysis of the rear seats also indicated good whiplash protection.   The DS 4 has an advanced eCall system which alerts the emergency services in the event of a crash but this is part of the optional 'Safety Pack Plus' and was not included in the assessment.   The car also has a system which applies the brakes after an impact to avoid secondary collisions.