2015 PORSCHE 911 CARRERA 4S engine

Principle 37
F o r 911 fans it ’s a question of faith, for
tech lovers it ’s an issue of performance:
rear or all-wheel drive?
The answer may turn out differently on
either side, but neither would be wrong.
Those who recognise the rear-driven
variant as being the one true 911
should
consider that the all-wheel drive setup
goes back to the legendary Paris–Dakar
Rally of 1984, when the Porsche 953
based on the 911
wrote its own chapter
in sport – and engineering – history. Fun
in the corners, by the way, is guaranteed
by both drive layouts. Two irreconcilable philosophies? Let’s
discuss a third: the design. The all-wheel
drive 911
models have a 44 mm wider
body, let ting it rest more firmly on the
road. An impression underlined by the
new light strip, especially after dark.
Another hallmark of the all-wheel drive
models: sheer supremacy. In every
corner and at any time of year. Porsche
Traction Management (PTM), the active
all-wheel drive system, varies the drive
force transmit ted to all four wheels as
the situation demands. This helps to
ensure solid roadholding and even bet ter performance. Simultaneously, of course.
In winter. Day in, day out. At the limits of
dynamic driving performance.
Fair-weather cars? The new 911
Ta r g a 4

models are any thing but. Here, the all-
wheel drive marries excellent traction
with excellent aesthetics.
Rear or all-wheel drive? Whatever stance
you take, the most fascinating philosophy
of life is and shall remain the practical
one. At Porsche, this philosophy has been
about the road for well over 60 years.
Even philosophical questions
can be answered with outstanding performance.
Rear-wheel and all-wheel drive.

Drive 41
At Porsche, there are no conventions.
Forbidding free thought? That’s forbidden.
The only thing that mat ters is this
question: how can we become even
bet ter? Let ’s put it another way: can we
redefine the limits of engineering? Can
we reconcile apparent contradictions?
Yes, we can. With Intelligent Performance.
The new 911 answers questions about
the future of the sports car with a
quantum leap in performance. By
reducing fuel consumption, but not by
suppressing emotions. By following a
principle that has already changed
every thing once before: in 1974, with the
f i r s t 911
 Tu r b o. Developed completely from scratch, the
six-cylinder twin-turbo engines of the
911
Carrera and Targa 4 models with a
displacement of 3.0 litres embrace this
principle and perfect it in a forward-
l
ooking way. To be more precise:
tremendous acceleration force even in the
low rpm range is supplemented by the
engine map of a 911 Carrera with the high
rev limits t ypical of a sports car. In other
words, high compression and a high engine
speed combined with good modulation of
power output and surprisingly low fuel
consumption, thanks to the reduced
overall displacement.
Expressed in figures, this means an extra
15 kW (20 hp) of power, an extra 60 Nm
of torque and engine speeds of up to
7,500 rpm. And a considerable reduction
in fuel consumption of up to 13 %. The engine of the 911
Carrera and
911
Targa 4 models develops 272 kW
(370 hp). The maximum torque of
450 Nm is available from as low as
1
,700 rpm. With Porsche Doppelkupplung
(
PDK), the 911 Carrera can accelerate
from 0 to 62 mph in only 4.4 seconds
and reach a top speed of 182 mph.
The propulsive potential of the engine in
the S models, featuring upsized
turbochargers and independent exhaust
system, is even more impressive. It
generates a power output of 309 kW
(420 hp) and the maximum torque is a
might y 500 Nm, available from as low as
1
,700 rpm. With Porsche Doppelkupplung
(PDK) and Launch Control, the
We could sit back in the slipstream of our own tradition.
Or prepare to overtake.
Engines.
911 Carrera S sprints to 62 mph in a
mere 3 .9 seconds. Top speed isn’t
reached until 190 mph.
What cannot be expressed in figures: the
legendary sound of a 911
six-cylinder
horizontally opposed engine. And the
experience is all the more intense for it.
For fuel consumption and CO
2 emissions, please refer to page 147 onwards.
Prepare to overtake.
Scan code or go to w w w.porsche.co.uk/911- engines and star t the video.

Drive 43
The stand- out qualities of the new t win-
turbo engines are their extraordinarily
direct responsiveness and wide torque
plateau, reached early in the low end of
the rpm band. Combined with the high
rev limit – and the legendary sound of a
911
six-cylinder horizontally opposed
engine. In short: excellent performance
that feeds back to the driver in an instant.
For fuel consumption and CO2 emissions,
please refer to page 147 onwards.

12
Turbochargers.
The displacement of the new 911 models
has been considerably reduced with the
aim of cut ting fuel consumption. That ’s
because we more than most as a sports
car manufacturer bear huge responsibility.
Nevertheless, the power output of the
new engines has been significantly increased. Responsible for that are the
turbochargers developed for the 911

completely from scratch.
The drive system is a t win-turbo
configuration. It has two turbochargers
with one charge-air cooling for each
cylinder bank. Both turbos are particularly compact and have been
optimally adapted to the displacement
and power output of the engine. This
construction minimises the inertia of the
drivetrain and improves responsiveness.
The new turbochargers leave the sceptics
in their wake and find a new destination:
unexplored levels of torque. What looks technical on paper has an
unmistakably resonant sound. The sound
of a 911. And a performance that hits the
driver in an instant. In the form of direct
acceleration and visceral forward thrust.
Rather like a ‘ thump’ in the back the
moment the engine unleashes its
unadulterated power.

3
Drive 45
Active air intake flaps.
The active air intake flaps in the front air
intakes act to reduce fuel consumption
during everyday trips and to achieve
superlative performance on sporty drives.
Already proven on the 918 Spyder,
the
flaps close automatically while the car
is in motion and thereby reduce drag. On demand or in SPORT or SPORT PLUS
mode, the flaps open and help to provide
optimum engine cooling.
This means that cooling air is supplied
only to the extent that it is actually
needed. That’s efficiency. Of the
intelligent kind.
1 Turbocharger
2 Air intake flaps closed
3 Air intake flaps open

1
3
Drive 47
Efficiency-enhancing technologies.
Auto start /stop switches off the engine
when the driving speed falls below 4 mph
under moderate deceleration, such as
when you are approaching a red light. As
soon as you release the clutch or, with
PDK, depress the accelerator pedal, the
engine restarts – swiftly and smoothly.
In conjunction with Porsche Doppelkupplung
(PDK), a coasting function becomes
available where the situation allows.
The engine is decoupled from the
transmission to avoid deceleration
caused by engine braking. In this way,
optimum use is made of the vehicle’s
momentum, enabling it to coast for
longer distances.
Sports exhaust system.
It ’s a first for any Porsche turbocharged
boxer engines, and it ’s a technical
innovation. Available as an option for the
new 911, the sports exhaust system
features t wo cataly tic converters and a
rear silencer, which lead into two centrally
positioned tailpipes. For a look otherwise
more likely to be seen on the racetrack.
For impressive resonance and an intense
sports car sound – typical of the 911.
For 100 % Porsche. And for goose bumps
at the push of a but ton.
1 Spor ts exhaust system
2 Single-tube tailpipes of the 911 base models
3 Twin tailpipes of the 911 S models

Drive 49
7-speed manual transmission.
Pure, direct, precise. Short shift
movements and an optimum transition
from one gear to the next. The 7-speed
manual transmission combines a high
level of sport y performance with fast
gear changes. In conjunction with the
optional Sport Chrono Package, selecting
SPORT or SPORT PLUS mode activates
the dynamic
throttle-blip function, which
ensures the optimum engine speed for
every downshift, a more emotional
driving experience and an impressive
sound.
A gear indicator in the rev counter
reminds you which gear has been
selected. The upshift indicator in the
instrument cluster helps you actively to
conserve fuel.
Porsche Doppelkupplung (PDK).
The optimised 7-speed PDK, featuring
both a manual and an automatic mode, is
available as an option and offers extremely
fast gear changes with no interruption in
the flow of power. And that ’s with even
faster acceleration performance and a
further reduction in fuel consumption.
A first for the 911
models: in manual
mode, the shift direction simulates that
of racing cars and the 911
GT3 models –
to the rear to shift up, forwards to shift
down. For a racetrack driving experience
wherever you are. Gears one to six have a sports ratio, with
top speed being reached in sixth gear.
Seventh gear is ratioed primarily for fuel
economy.
PDK is essentially t wo gearboxes in one.
This double-clutch arrangement provides
an alternating, non-positive connection
bet ween the t wo half gearboxes and the
engine by means of t wo separate input
shafts. The flow of power from the
engine is transmit ted through one half
gearbox and one clutch at a time, while
the next gear is preselected in the
second half gearbox. During a gear
change, therefore, one clutch simply
opens and the other closes at the same
time, enabling gear changes to take
place within milliseconds.
Always a few milliseconds ahead of time.
Transmission.
1
7-speed manual transmission
2 Porsche Doppelkupplung (PDK)

345
Chassis 59
Electromechanical power steering.
Statistically, a car drives in a straight line
90 % of the time. In light of this, our
engineers identified potential for energy
savings. Unlike the hydraulic pumps of
conventional power steering systems, the
electric motor of the electromechanical
arrangement uses energy only when the
steering wheel is actually turned.
That isn’t to say that you aren’t ideally
prepared for the other 10 %. After all,
this steering system is t ypically Porsche.
It features a variable steering ratio and responds sensitively and directly while
providing customary agilit y, a high level
of comfort and precisely selected
feedback from the road. Our definition

of efficient.