The Subaru Solterra is a twin of the Toyota bZ4X and is identical in terms of safety equipment.  Accordingly, the results of tests on the Toyota have been used for the Subaru, and the same rating applies.

The passenger compartment remained stable in the frontal offset test. Dummy readings indicated good protection of the knees and femurs of both the driver and passenger.  However, Subaru did not demonstrate a similar level of protection for occupants of different sizes or those sitting in different positions.  Dummy readings of compression indicated a marginal level of protection for 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 car would be a moderately benign impact partner in a frontal collision. In the full-width rigid barrier test, protection of the chest of both the driver and rear passenger was rated as marginal, based on measured values of compression. In the side barrier test, protection of all critical body areas was good or adequate. In the more severe side pole impact, protection of the chest was adequate, with good protection of other critical body areas.  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 Solterra has a counter-measure to mitigate against occupant to occupant injuries in such impacts. The system performed well in Euro NCAP’s test, with good protection of occupants’ heads.  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.   An advanced eCall system is fitted which alerts the emergency services in the event of a crash and a system which automatically applies the brakes to prevent secondary collisions.

Good or adequate protection was provided for all critical body regions of both the 6 and 10 year dummies in the frontal offset and side barrier tests, and maximum points were scored in this part of the assessment.  The front passenger airbag can be disabled to allow a rearward-facing child restraint to be used in that seating position. All of the child restraint types for which the bZ4X is designed could be properly installed and accommodated.

Protection of the head of struck pedestrian was predominantly good or adequate with some poor areas on the stiff windscreen pillars.  The bumper offered good protection to pedestrians’ legs but protection of the pelvis region was mixed.  The autonomous emergency braking (AEB) system can respond to vulnerable road users as well as to other vehicles.  The system performed well in tests of its response to pedestrians and cyclists, with collisions avoided in most test scenarios.

The autonomous emergency braking (AEB) system performed well in tests of its reaction to other vehicles.  A seatbelt reminder system is fitted as standard to the front and rear seats and the car is equipped with a system to detect driver fatigue.  The lane support system gently corrects the vehicle’s path if it is drifting out of lane, and also intervenes in some more critical situations.  A speed assistance system detects the local speed limit and the driver can choose to set the limiter or let the system do so automatically.