Mostly because the BMW 7-Series is a relatively rare (and very expensive model), it hasn't been put through the usual crash tests by the NHTSA or by the IIHS. It does have a reputation for offering excellent occupant safety, and some of the most advanced accident-prevention technology.
Every 7-Series gets standard front, side, and side-curtain airbags; rear-seat side airbags; knee airbags; and front-seat active head restraints. Anti-lock brakes, traction and stability control are standard, of course, and BMW adds a rearview camera and a 180-degree front-end camera, as well as parking sensors.
New for 2013 is an upgraded adaptive cruise control system that can stop the vehicle if the driver doesn't react to traffic in time. Also, a standard Attention Assist system monitors the driver and suggests a cup of coffee by an icon on the dash, if it detects driver fatigue.
All-wheel-drive 7-Series cars get hill descent control--useful here for keeping car control on icy roads, not for touting off-road traction.
Most 7-Series cars can be fitted with blind-spot monitors, lane-departure warnings, and automatic high-beam headlights.
As much as we like the available head-up display in the 7-Series (it's better done than efforts from other automakers), we'd probably skip simply because it tends clutters the driver's field of view. As does the night-vision system, which may prove as distracting as it is helpful.