Porsche claims that the 911 Carrera with the PDK automatic transmission and the Sport Chrono package shaves 0.2 second off of its zero-to-60 time (for a 4.0-second run) while increasing its top speed to 183 mph.

And both are said to be 12 percent more fuel efficient, although final EPA fuel-economy estimates are still forthcoming. Both Carreras can register 7500 rpm on their tachometers, a lofty engine speed for a turbocharged engine. Both entry-level 911 models now serve up 20 horsepower more than their non-turbocharged predecessors, while the Carrera’s torque peak rises by 44 lb-ft and the S’s swells by 43. In the Carrera, the twin-turbo engine produces 370 horsepower and 331 lb-ft of torque different compressor wheels, a special exhaust setup, and a specific ECU tune nets the Carrera S 420 horsepower and 368 lb-ft of torque. The new engine, shared in essentially the same form by both the Carrera and Carrera S, is a 3.0-liter twin-turbocharged ball of mechanical fury. And that’s all the space we’ll devote to our mourning period. Still, now that it has happened, we can’t help but lament the loss of Porsche’s signature and wonderful-sounding non-turbo flat-six. It’s been expected for some time that Porsche would drop the Carrera duo’s naturally aspirated flat-sixes for turbocharged versions. We have entered a brave new world in which the base 911 Carrera and its zippier Carrera S sibling have given up natural breathing for forced induction. Close the lids, and nary a script “Turbo” badge is visible. There, affixed to familiar flat-six engines, you’ll find twin turbochargers. In fact, those are but infinitesimal flickers in a grand night sky compared to the new 911’s biggest step forward, which requires you step back and peek under the engine covers of the Carrera and Carrera S. There are new headlights, new taillights, and a new touch-screen dashboard display. Like any updated car whose changes stop short of a full redesign, the 2017 Porsche 911 Carrera bears the typical scars of midcycle fiddling.

2017 porsche 911 engine