The 2011 S80 gets top 'good' ratings from the Insurance Institute for Highway Safety (IIHS) in frontal, side, and rear impact, and a 'good' rating in the new roof strength test, which gauges protection in the even of a rollover. It hasn't, though, been rated by the federal government.
Front, side, and curtain airbags, as well as anti-lock brakes and stability control, are standard. In addition to all the usual accident avoidance and occupant safety items such as front, side, and side curtain airbags, anti-lock brakes, and electronic stability control, a new system primes the brakes before an accident; blind-spot detectors send audible alerts. There's also Volvo's Personal Car Communicator, a keyfob-connected in-car sensor that tells you if your security system has detected a break-in—or even a heartbeat.
Additionally, the optional Blind Spot Information System (BLIS) includes warning lights mounted on the front pillars, to alert the driver if there's another vehicle in the blind spot.