The GT3 variant was added to the 991 line up at the 2013 Geneva Motor Show equipped with Porsche's new active rear wheel steering.
The system is claimed to provide higher lateral dynamics than previously available by the manufacturer.
Car speed inputs determine whether the rear wheels steer in the same or opposite direction of the front wheels.
It is the first GT3 model to be offered with an automatic transmission.

At the start of 2014, deliveries of the GT3 were halted following two incidents of the car catching fire.
A subsequent recall to replace the engines of all 785 cars manufactured at that time was announced in March 2014 before production of the GT3 would restart.
The GT3 variant was added to the 991 line up at the 2013 Geneva Motor Show equipped with Porsche's new active rear wheel steering. The system is claimed to provide higher lateral dynamics than previously available by the manufacturer. Car speed inputs determine whether the rear wheels steer in the same or opposite direction of the front wheels. It is the first GT3 model to be offered with an automatic transmission.
At the start of 2014, deliveries of the GT3 were halted following two incidents of the car catching fire. A subsequent recall to replace the engines of all 785 cars manufactured at that time was announced in March 2014 before production of the GT3 would restart.
Porsche 991