There's no data yet to support a higher rating, but we're scoring the 2013 Maserati GranTurismo fairly well due to its list of standard safety equipment.
Neither the Insurance Institute for Highway Safety (IIHS) or the National Highway Traffic Safety Administration (NHTSA) has yet crash-tested the GranTurismo, and for a couple of likely reasons: it's a low-volume sportscar with a high pricetag. It's not unusual for luxury cars to run into this situation, and it's not likely to change in the GranTurismo's current life cycle.
The GranTurismo lineup does have the usual assortment of front and side airbags, stability control and anti-lock brakes. Convertibles also get pop-up rollover bars that deploy in case an accident threatens a rollover accidents. The stability control is tuned for more wheelspin when Sport mode is engaged on models offering it.
Bluetooth and front and rear parking sensors are standard equipment, but the GranTurismo doesn't offer a rearview camera. It could use one, since its low seating position makes rearward visibility a challenge even in the convertible.