Both the 9 - 3 and C70 are equipped with standard pop - up rollbars behind the rear head restraints that deploy if sensors detect a serious crash. (iihs.org)
The Institute adds a requirement for convertibles which must be equipped with rollbars designed to preserve occupants» headroom if a convertible rolls over. (iihs.org)
In addition, pop - up rollbars are standard, along with side curtain airbags that preactivate if a rollover is sensed.Cars equipped with a leather interior benefit from BMW's sun reflective technology, which reduces seat surface temperature by a claimed twenty degrees Farhenheit. (automobilemag.com)