Because the 2009 Jaguar XJ hasn’t been crash-tested by the National Highway Traffic Safety Administration (NHTSA) or the Insurance Institute for Highway Safety (IIHS), it is an unknown quantity when it comes to crash-test ratings, but it has a complete set of safety gear.
Cars.com catalogs the very sophisticated equipment contained in every XJ: "Side impact bars, four door curb lights, illuminated entry, traction control, anti-skid system, four-wheel anti-lock brakes (ABS), driver and passenger airbags, driver side impact airbags, passenger side impact airbags, curtain 1st and 2nd row overhead airbags, occupancy sensor, front and rear seatbelt pre-tensioners, ignition disable, panic alarm, security system, and low tire pressure warning."
As Edmunds observes, the 2009 Jaguar's airbag system "monitors the positions and weight of the front seat passengers to determine how and when to deploy the various airbags."
Many of today’s luxury cars include front and rear obstacle sensors as standard equipment, and the Jaguar XJ is no exception. However, ConsumerGuide reports, “The front and rear obstacle detection system was overly sensitive” on one Jaguar XJ test car. As with many other cars, though, the 2009 Jaguar allows its driver to disable the system if an annoying false alarm persists. “Visibility to the rear is compromised by a tall trunklid," points out ConsumerGuide about the drawbacks of the sleek shape of the 2009 Jaguar XJ.