The passenger compartment of the Aygo X remained stable in the frontal offset test. Dummy numbers demonstrated good protection for the knees and femurs, apart from the driver’s left femur.  As a result a penalty was applied to the score of this body region because of structure in the dashboard which could present a risk of injury to occupants of different sizes and to those sitting in different positions.  Analysis of the deceleration of the impact trolley during the test, and analysis of the deformable barrier after the test, revealed that the Aygo X would be a benign impact partner in a frontal collision. In the full width rigid-barrier impact, protection of all critical body areas was good for the driver, apart from the chest, protection of which was rated as marginal.  In both the side barrier test and the more severe side pole impact, protection of all critical body areas was good and maximum points were scored. 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 weak. The Aygo X does not have a counter-measure to mitigate against occupant to occupant injuries in such impacts. 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 Aygo X has an advanced eCall system which alerts the emergency services in the event of a crash and the car also has a system which applies the brakes after an impact to avoid secondary collisions.

In both the frontal offset test, protection of all critical body areas was good or adequate for all critical body areas, for both the 6 and 10 year dummy.  However, in the side barrier impact, dummy measurements of accelerations in the head and chest of the 10 year dummy indicated marginal and poor protection, respectively.  The front passenger airbag can be disabled to allow a reward-facing child restraint to be used in that seating position. Clear information is provided to the driver regarding the status of the airbag and the system was rewarded.  All of the child restraint types for which the car is designed could be properly installed and accommodated.

The protection offered by the bonnet to the head of a struck pedestrian was predominantly good or adequate, with some areas of poor protection on the stiff windscreen pillars.  The bumper provided good protection to pedestrians’ legs at all test locations but protection of the pelvis was mixed.  The autonomous emergency braking (AEB) system of the Aygo X can detect vulnerable road users, as well as other vehicles.  The system performed well in tests of its response to pedestrian and adequately in tests of its response to cyclists.

The AEB system performed well in tests of its response to other vehicles, with impacts avoided or mitigated in most test scenarios.  A seatbelt reminder system is standard and the car is equipped with a system which monitors steering inputs and issues a warning when a pattern characteristic of drowsy or impaired driving is detected.  A driver-set speed limiter is standard equipment.  If the car is drifting out of lane, a lane keep assist system gently corrects the vehicle’s path.  The system also intervenes in some more critical situations, to avoid road departure for example.