The BMW 6 Series GT shares a platform and much of its structure with the BMW 5 Series, tested earlier in 2017, and has the same level of safety equipment.  Accordingly, some tests in this assessment are carried over from the 5 Series.  Additional tests have been done where differences might exist.

The passenger compartment of the remained stable in the offset frontal impact.  Dummy readings indicated good protection of the knees and femurs of the driver and passenger.  BMW demonstrated that, for the passenger's side, a similar level of protection would be provided to occupants of different sizes and to those sat in different positions.  On the driver's side, incorrect deployment of the knee airbag in the full-width test led to penalties for this body region in both frontal impact tests.  In the full-width frontal test, the knee airbag did not deploy quickly enough to get between the right knee and the dashboard.  Although dummy readings for both legs were good, protection of the knee/femur/pelvis region was penalised.  BMW stated that the airbag deployment seen in Euro NCAP's test was anomalous and had not been observed in their development tests.  Protection of the neck of the driver and the chest of the rear passenger was rated as marginal.  In the side barrier test, maximum points were scored, with good protection of all critical body regions.  However, in the more severe side pole test, chest protection was rated as poor due to high shoulder loads.  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 good protection there too.  The car has, as standard, and autonomous emergency braking system which operates at the low speeds, typical of city driving, at which many whiplash injuries are caused.  The system scored maximum points in Euro NCAP's tests, with complete avoidance of collision at all test speeds.

In the frontal offset test, protection of both the both dummies was good or adequate except for the chest of the 6 year dummy which was rated as marginal based on chest decelerations.  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 to the driver regarding the status of the airbag and the system was rewarded.  All of the restraint types for which the 6 Series GT is designed could be properly installed and accommodated in the car.

The 6 Series GT has an 'active' bonnet.  Sensors detect when a pedestrian has been struck and actuators lift the bonnet, providing greater clearance between its top surface and hard structures in the engine bay.  BMW demonstrated that the system worked for a variety of pedestrian statures and over a range of speeds so tests were conducted with the bonnet in the raised position.  Good or adequate protection was provided at all over the entire bonnet surface.  The bumper also provided good protection and scored maximum points in tests of its protection of pedestrians' legs.  However, protection of the pelvis area was poor at all test locations.  The autonomous braking system is able to detect pedestrians as well other vehicles and performed well in Euro NCAP's tests of this functionality, with collisions being avoided or mitigated at most test speeds.

The standard-fit autonomous emergency braking system showed good performance in tests of its functionality at highway speeds.  Collision was avoided in almost all circumstances and mitigated in others.  A driver-set speed assistance system allows the driver to limit the maximum speed of the vehicle as appropriate, and a seatbelt reminder is provided for all seating positions.