Introduced at the 2011 Geneva Motor Show, the Carrera is equipped with a 3.4 litre boxer engine with direct fuel injection generating a maximum power output of 350 PS (257 kW; 345 hp) at 7,400 rpm and 390 N⋅m (288 lb⋅ft) of torque at 5,600 rpm.
The Carrera S has a 3.8 litre engine generating a maximum power output of 400 PS (294 kW; 395 hp) at 7,400 rpm and 440 N⋅m (325 lb⋅ft) of torque at 5,600 rpm.

The convertible variant of the 991 was announced in both Carrera and Carrera S versions at the LA Motor Show in November 2011.

In September 2012 at the Paris Motor Show, the all-wheel-drive variants – the Carrera 4 and 4S, were added to the 991 line-up.
Introduced at the 2011 Geneva Motor Show, the Carrera is equipped with a 3.4 litre boxer engine with direct fuel injection generating a maximum power output of 350 PS (257 kW; 345 hp) at 7,400 rpm and 390 N⋅m (288 lb⋅ft) of torque at 5,600 rpm. The Carrera S has a 3.8 litre engine generating a maximum power output of 400 PS (294 kW; 395 hp) at 7,400 rpm and 440 N⋅m (325 lb⋅ft) of torque at 5,600 rpm.
The convertible variant of the 991 was announced in both Carrera and Carrera S versions at the LA Motor Show in November 2011.
In September 2012 at the Paris Motor Show, the all-wheel-drive variants – the Carrera 4 and 4S, were added to the 991 line-up.
Porsche 991