Porsche has announced the flagship of the latest 991 range, the Porsche 911 Turbo and Turbo S models. Described as the “technological and dynamic performance peak of the 911 series” the Turbo boasts new all-wheel drive, active rear axle steering, adaptive aerodynamics, full-LED headlights and up to 560 hp from a bi-turbo flat-six engine.
Sitting at the fat rear end of the Turbo is a 3.8 litre six-cylinder engine with direct petrol injection and bi-turbo. Porsche says that it is the only carmaker to offer two turbos with variable turbine geometry for a petrol engine. It makes 520 hp in the Turbo and 560 hp in the Turbo S, but torque figures weren’t announced. The previous-gen car had 700 Nm, by the way.
Power is transferred to all wheels via a seven-speed dual clutch PDK transmission, which now enables auto start/stop with earlier engine shutoff during coast-to-stop. Together with a new thermal management system, NEDC fuel consumption improves by up to 16% to 9.7 litres per 100 km.
For even faster and more precise power distribution, Porsche developed a new AWD system (PTM) with electronically controlled and activated multi-plate coupling. Equipped with a new water cooling function, it can direct even more torque to the front wheels if necessary.
The 911 Turbo with the optional Sport Chrono Package accelerates from 0-100 km/h in 3.2 seconds, one-tenth better than the previous 911 Turbo S. The new 911 Turbo S does it in just 3.1 seconds. Top speed is 318 km/h. The new Turbo S shortens the lap time for the North Loop of the Nürburgring to “well under 7:30″ with standard production tyres.
Also new is rear axle steering, which consists of two electro-mechanical actuators. The steering angle of the rear wheels can be varied by up to 2.8 degrees, depending on vehicle speed. Up to 50 km/h, when the front wheels are turned the system steers the rear wheels in the opposite direction. This corresponds to a virtual shortening of the wheelbase by 250 mm, which lets the car turn faster into the bend while simplifying parking.
At speeds above 80 km/h, the system steers the rear wheels parallel to the turned front wheels. This is equivalent to a virtual lengthening of the wheelbase by a significant 500 mm and gives the car added high speed stability. At the same time, steering input leads to faster build-up of lateral force at the rear axle, which translates to more spontaneous and harmonious change of direction.
Another new toy is Porsche active aerodynamics (PAA). It consists of a sturdy, retractable three-stage front spoiler and a deployable rear wing with three adjustable positions. In the performance position, all segments of the front spoiler are fully extended, while the rear wing is extended to its maximum height. Nürburgring North Loop lap times are improved by up to two seconds due to this system alone.
Visually, the rear body panels of the new 911 Turbo are 28 mm wider than on the 911 Carrera 4 models – they feature a nearly level surface, about the width of a hand, between the C-pillar and the outer edge of the body. Other differentiating details include two-tone forged 20-inch wheels and new full-LED headlights with camera-based main beam control. The latter is standard on the Turbo S and optional on the Turbo.
Earlier this year, Porsche revealed the new 911 GT3 for the more hardcore driver. By the way, the iconic 911 created by the late Ferdinand Alexander Porsche turns 50 this year – click here to see the past masters.