► BMW Z4 - Crash Test

The BMW Z4 is the third and last roadster tested this year and the one that has been out on the market the longest. The sports car received a facelift in 2013, but it has not kept up with the advancements in Euro NCAP's rating scheme. Lacking crash avoidance technologies such as AEB, lane assist and speed assist systems that are so common on other popular BMW models, the Z4 received a 3 star rating.

The passenger compartment of the Z4 remained stable in the frontal impact. Dummy readings indicated good protection of the knees and femurs of both the driver and passenger dummies. BMW 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 test, protection of all critical body regions was good and the Z4 scored maximum points in this test. Maximum points were scored also in the side impact barrier test, with good all-round protection. No pole test was performed for this assessment. The seats and head restraints demonstrated good protection against whiplash injury in the event of a rear-end collision. An autonomous emergency braking system is not available on the Z4.

As the Z4 is a two-seater, the assessment of child protection is based on the features available in the vehicle for safe transportation of children in the front passenger seat, and on the installation of various types of restraints in that seating position. The front passenger airbag can be disabled to allow a rearward facing child restraint to be used in that seating position. However, the information provided to the driver regarding the status of the airbag is not sufficiently clear and the system was not rewarded. All of the restraint types for which the Z4 is designed could be properly installed and accommodated.

The Z4 has an 'active' bonnet. Sensors in the bumper detect when a pedestrian has been struck and actuators lift the bonnet, creating more space between the surface and the hard structures in the engine compartment. BMW showed that the bonnet would deploy robustly over a range of speeds and for a variety of pedestrian statures. Accordingly, the bonnet was tested in the deployed (raised) position. Results were almost predominantly good or adequate on bonnet surface. The bumper offered good or adequate protection to pedestrians' legs and protection of the pelvis region was good at all test locations.

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