The passenger compartment remained stable in the frontal impact.  Dummy readings indicated good protection of the knees and femurs of the driver and passenger.  Subaru demonstrated that a similar level of protection would be provided to occupants of different sizes and to those sat in different positions.  In the full-width rigid barrier test, protection of the driver was good for all critical body areas.  However, the pelvis of the rear passenger dummy slipped below the lap section of the seatbelt.  Protection of the pelvis was rated as poor and the score was penalised.  Protection was otherwise good or adequate.  In the side barrier test, protection of all critical body areas was good and the car scored maximum points.  Even in the more severe side pole test, protection of the chest was adequate and that of other parts of the body was good.  Tests on the front seats and head restraints demonstrated good protection against whiplash injury in the event of a rear-end collision.  A geometric assessment of the rear seats also indicated good whiplash protection.  The standard-fit 'Eyesight' autonomous emergency braking system performed well in tests of its functionality at the low speeds at which many whiplash injuries are caused, with collisions avoided at all test speeds.

In the frontal offset test, protection of both the 6 and 10 year dummies was good or adequate.  In the side barrier test, protection was good for all critical body areas.  The Impreza has a system which automatically disables the front passenger airbag when a rearward-facing child restraint is in that seating position. Tests showed that the system worked robustly and it was rewarded.  All of the child restraints for which the XV is designed could be properly installed and accommodated in the car.

The protection provided by the bonnet to the head of a struck pedestrian was good or adequate over almost all of its surface.  Protection of pedestrians' lower legs by the bumper was good at all test locations.  Protection of the pelvis was mixed, with areas of good and weak performance.  In tests of its functionality with a pedestrian target, the autonomous emergency braking system performed well, with collisions avoided or mitigated in all scenarios.

The Impreza has a seatbelt reminder system for the front and rear seats.  A lane assistance system warns the driver when the car is drifting out of lane and gently helps to correct the driving path.  The autonomous emergency braking system performed well in tests of its functionality at highway speeds, with collisions avoided or mitigated in all scenarios and at all test speeds.