The passenger compartment remained stable in the frontal offset test.  Dummy readings indicated good protection of the knees and femurs of the driver and passenger. Opel showed 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 impact, protection was adequate for the chest of the driver and rear passenger and was good for all other critical body areas.  In both the side barrier test and the more severe side pole impact, good protection was provided to all critical body regions and the Insignia scored maximum points in these tests.  Tests on the front seats and head restraints demonstrated good protection against whiplash injuries in the event of a rear-end collision.  A geometric assessment of the rear seats indicated marginal whiplash protection.  Tests of the Insignia's autonomous emergency braking system showed good performance of its functionality at the low speeds typical of city driving at which whiplash injuries are often caused.

In the frontal offset test, protection of the 10 year dummy was good apart from the neck, for which dummy readings of tension indicated marginal protection.  For the 6 year dummy, protection was good or adequate in this test.  In the side barrier test, protection of both dummies was good or adequate.  The front passenger airbag can be disabled to allow a rearward-facing child restraint to be used in that seating position.  Clear information is provided regarding the status of the airbag and the system was rewarded.  All of the restraint types for which the Insignia is designed could be properly installed and accommodated in the car.

The Insignia has an 'active' bonnet.  Sensors in the bumper detect when a pedestrian has been struck and actuators lift the bonnet, providing greater clearance to hard structures in the engine compartment.  Opel showed that the system operated robustly for a variety of pedestrian statures and over a wide range of speed so the car was tested with the bonnet in the deployed, raised condition.  Protection was good or adequate over virtually the entire surface of the bonnet.  The bumper provided predominantly good protection the legs of struck pedestrians but protection of the pelvis area was more mixed.  The autonomous emergency braking system can detect pedestrians as well as other vehicles and performed well in Euro NCAP's tests of this functionality.

Tests of the autonomous emergency braking system at highway speeds showed good performance, with accidents avoided or mitigated.  The car has a driver-set speed limitation system and lane departure warning.  A seatbelt reminder is standard for the front driver and passenger seats but is only an option for the rear seats.