"The 991 is an entirely new platform, only the third platform since the original 911. Porsche revealed basic information on the 991 Carrera and Carrera S on 23 August 2011. The Carrera is powered by a 350 hp (257 kW) 3.4-liter engine. The Carrera S features a 3.8-liter engine producing 400 hp."@en . "The 991 is an entirely new platform, only the third platform since the original 911. Porsche revealed basic information on the 991 Carrera and Carrera S on 23 August 2011. The Carrera is powered by a 350 hp (257 kW) 3.4-liter engine. The Carrera S features a 3.8-liter engine producing 400 hp."@en . . "911 type 991"@en .