2014 PORSCHE 911 fuel

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7R
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Porsche Doppelkupplung (PDK).
Available as an option for all
911
Carrera models is 7-speed PDK,
featuring manual and automatic modes.
It facilitates extremely fast gear changes
with no interruption in the flow of power,
whilst at the same time improving
acceleration and fuel efficiency. The first six gears are particularly
sport y, with top speed being reached

in 6th gear. 7th gear has a long
ratio and reduces the revs – for lower
consumption.
PDK is essentially t wo gearboxes in one
and thus requires t wo clutches. This
double-clutch arrangement provides an
Porsche Doppelkupplung (PDK)
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.
The effect is instant. Driving feels even
sportier and more dynamic, and agility

is increased. Depending on the gearshift
programme (SPORT button activated
T emperament | Transmission
or deactivated), the gear change is opti -
mised for comfort or for sport y driving.
With the optional Sport Chrono Package,
PDK is enhanced by the ‘Launch Control’
and ‘motorsport-derived gearshift
strategy’ functions (pages 65– 67).
Coasting.
The ‘coasting’ function available with
Porsche Doppelkupplung (PDK) enables
you to save even more fuel where the
situation allows. The engine is decoupled
from the transmission to prevent
deceleration caused by engine braking.
In this way, optimum use is made of the
vehicle’s momentum, allowing it to coast
for longer distances.
For example, you may want to slow down
from 100 to 80 km/ h in anticipation
of the change of speed limit ahead. As
soon as you release the accelerator
pedal, PDK deselects the current gear automatically and you begin to coast
in neutral until you have reached your
desired speed. The moment you engage
the accelerator or brake pedal, PDK
selects the appropriate gear smoothly
and seamlessly within a fraction of a
second.
In short, driving in coasting mode makes
a real impact on fuel consumption without
any need for compromise on comfort or
sporty performance.
Another way to reduce fuel consumption is
to utilise the coasting function on downhill
gradients that are gentle enough for you
to maintain a constant speed. Efficient on
long journeys, such as on the motorway,
PDK remains ready to respond as swiftly
and precisely as you would expect.
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.

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T
emperament
| Chassis and body
Aluminium
Deep -drawn steels
Multiphase steels
Super- high -strength micro -alloyed steels
Boron- alloyed steels
Front and rear axles.
The independent suspension at the front
features a light weight spring-strut axle
with longitudinal and transverse links and
cross members that have been refined
for stiffness. Each front wheel is precisely
located, ensuring excellent directional stability, superior handling and reduced
pitching under braking, and the wide
track optimises turn-
in.
The rear axle is equipped with a
motorsport- derived multi -link suspension
and chassis subframe. Refined axle
kinematics for improved longitudinal
damping reduce acceleration squat and increase comfort. Light weight spring
struts further enhance agilit y.
The high proportion of aluminium used in
the construction of the axles reduces the
weight of the vehicle and of the unsprung masses, helping to improve fuel economy,
comfort and agility.
Rear axle of the 911 Carrera S
Front axle of the 911 Carrera S
Engineered design.
The innovative bodyshell of the 911 fulfils
t wo structural design requirements: first,
excellent driving dynamics due to the
body’s extremely high rigidit y; second, a
low vehicle weight primarily as a result of
the intelligent lightweight construction.
To meet the second requirement, we
employed state -of -the- art techniques for
combining various materials in order
to utilise specific material properties
exactly where they are needed.

For the bodyshell, therefore, we used
very thin, but nevertheless extremely
rigid, sheets of steel. Aluminium and magnesium were used extensively in
areas such as the roof, underbody, front
end, doors, rear wings and engine com
-
partment and luggage compartment lids.
Magnesium, which is a particularly light -
weight material, was also selected for
the cockpit and centre console support
beam and, in the Cabriolet models,
the hood shell elements. Such material efficiency is key to
reducing the overall weight and, as a
result, fuel consumption of the vehicle.
For the driver, this intelligent blend of
materials reduces the weight of the
vehicle and offers a high level of comfort
thanks to excellent vibration-damping
characteristics and particularly high
composite rigidit y, a high degree of
dynamic torsional stiffness, and
especially sporty handling.
The long wheelbase improves comfort as
well as straight-line accuracy and driving
stabilit y at high speeds and in fast
corners.

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Wheels.
The 911 Carrera models are equipped
with 19-inch Carrera wheels as standard.
These are light weight alloys featuring a
classic sport y design. Tyre sizes are
235/40 ZR 19 and 285/35 ZR 19 at the
front and rear, respectively. All-wheel-
drive models are fit ted with even wider
295/35 ZR 19 t yres at the rear.The S models are equipped with light-
alloy 20 -inch Carrera
S wheels as
standard. The visual effect is sport y and
dynamic. The t yres are slightly wider to
cope with the increased power output of
these models: 245/35 ZR 20 at the
front, 295/30 ZR 20 at the rear. All-
wheel-drive models have 305/30 ZR 20
t yres at the rear.
The large t yre size improves both ride
comfort and track performance. Rolling
resistance, dry braking distances and t yre
weight are all comparatively low, thereby
helping to reduce fuel consumption.
A selection of 20 -inch wheels is available
in our range of options.
Tyre Pressure Monitoring (TPM).
Integrated as standard, Tyre Pressure
Monitoring (TPM) sends warnings to the
on-board computer’s display screen in
the event of low t yre pressure or a
gradual or sudden loss of pressure. The
individual pressures in all four t yres can
be displayed in the instrument cluster.
Porsche Stability Management (PSM).
As standard, the 911 Carrera models are
equipped with enhanced Porsche Stability
Management (PSM), which maintains sta -
bilit y even at the limits of dynamic driving
performance. Sensors continuously moni -
tor the direction, speed, yaw velocit y and
lateral acceleration of the car. Using this
information, PSM is able to calculate the actual direction of travel at any given
moment. If the car begins to oversteer or
understeer, PSM applies selective braking
on individual wheels to restore stabilit y.
Under acceleration on wet or low-grip
road surfaces, PSM improves traction
using the automatic brake diffe
rential
(ABD) and anti -slip regulation (ASR).
When the SPORT PLUS mode of the
optional Sport Chrono Package is selected,
the PSM threshold is raised to allow a
sportier driving style.
For an even more dynamic experience,
you always have the option to deactivate
PSM. It is automatically reactivated,
for your safet y, only if you brake harder
and either of the front wheels (in SPORT
PLUS mode, both of the front wheels) requires ABS assistance. ABS and ABD,
however, remain active at all times.
PSM therefore offers a high level of

driving stability and safety combined
with extraordinary agilit y. It ’s an
apparent contradiction in terms, but an
intrinsic part of the Porsche identit y.
19 -inch Carrera wheel (standard on
the 911 Carrera models)
20-
inch Carrera S wheel (standard on
the 911 Carrera S models) 911 Carrera 4 Cabriolet with 20-inch Carrera Classic wheels
T
emperament | Chassis and body
For fuel consumption, CO2 emissions and efficiency class, please refer to pages 141/143.

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From the start, Porsche has been
synonymous with motorsport. Ever since
1948, when we found our identit y on the
racetrack, we have taken the experience
we have gained and transferred it to the
road. The optional Porsche Ceramic
Composite Brake (PCCB) is a fine example.
This brake system has already had to
Composure | Safet y
cope with the harshest requirements of
motor racing and is fit ted in cars that
compete in demanding events, such as
the Porsche Mobil 1 Supercup. The
cross-drilled PCCB ceramic brake discs
for the 911 Carrera have a diameter
of 350 mm front and rear for even
more formidable braking performance. What we’ve discovered from over 30,000 racing victories:
Brake later, finish sooner.

Porsche Ceramic Composite Brake (PCCB).The use of six-piston aluminium
monobloc fixed brake calipers on the
front axle and four-piston units at the
rear – all finished in yellow – ensures
extremely high brake forces which,
crucially, are exceptionally consistent.
PCCB enables shorter braking distances
in even the toughest road and race
conditions. The key advantage of

PCCB is the extremely low weight of
the ceramic brake discs, which are
approximately 50 % lighter than standard
discs of similar design and size.
As well as enhancing performance and
fuel economy, this represents a major
reduction in unsprung and rotating
masses. The consequence is better roadholding
and increased comfort, particularly on
uneven roads, as well as greater agilit y
and improved handling.
The demands of racetrack use mean
that additional maintenance tasks
will be required alongside the routine
maintenance work scheduled as
part of standard maintenance intervals.
For fuel consumption, CO2 emissions and efficiency class, please refer to pages 141/143.

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Composure
|
Comfort
Engineering that takes you forward:
optional Porsche Communication
Management (PCM) with navigation
module and a high-resolution 7-inch
colour touchscreen. PCM is your control
centre for audio, navigation and
communication functions.Instruments.
Sport y not kitsch, practical not fanciful.
The five round instruments have one
purpose above all: to provide information.
They do so efficiently and accurately.
Their st yling is t ypically Porsche with the
rev counter exactly where you would
expect it to be: in the middle.
Another element of the Porsche identit y
is sound. Fit ted as standard, the
CDR audio system with 7-inch colour
touchscreen and the Sound Package Plus
offer outstanding performance with a
total output of 235 wat ts. Available as an
option is the BOSE
® Surround Sound
System with a total output of 445 wat ts.
In short, it delivers powerful audio playback combined with an impressive
spatial sound.

No system promises such high standards
in the 911, and fulfils them, as the
optional High-End Surround Sound
System from Burmester®, the bespoke
manufacturer based in Berlin and one of
the most respected premium audio
manufacturers worldwide. With a total output of 821
wat ts, it ensures an
incredible audio experience.
Our patented integral subwoofer enhances
the bass performance of both optional
sound systems and also saves weight.
Typically Porsche.
Ergonomics, st yle and sound. Sports car
technology, intelligently combined. The instrument cluster with a high-
resolution 4.6-inch TFT colour screen
provides you with a continuous stream of
data from the on-board computer, such
as trip mileage, journey time or average
fuel consumption. It also displays the
navigation system map, delivers various
warnings, including alerts from the Tyre
Pressure Monitoring (TPM) system and,
in 911 Carrera 4 models, tells you
the current front /rear axle torque
distribution. You can also use it to
personalise various in-car settings.
TFT display
Instruments in the 911 Carrera 4S with silver- coloured rev counter

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Responsibility
|
Motorsport
GT3 Cup Challenges.
Providing drivers with a route into
semi
-professional motorsport, these
entry-
level races are held in Australia,
Brazil, Central Europe, Great Britain,
Japan, Scandinavia, Switzerland, the
USA, Canada and the Middle East.
Drivers require the relevant national
licence to compete in the races whose
regulations are based on those of
the Porsche Carrera Cup Germany.
For further information, please visit
www.porsche.com/motorsport
Porsche Mobil 1 Supercup.
A one-make championship is an
international motorsport event. Since
1993, the Porsche Mobil 1 Supercup
has been held as part of the FIA
Formula One World Championship – and
as the only Gran Turismo race series.
All cars are supported by professional
racing teams, which use t wo to three
racing cars in the championship. The
events take place mainly as part of

the European Grand Prix, with a race
distance of approximately 70 kilo -
metres. The drivers, which include
established personalities alongside
promising new talent, give everything
they have from start to finish. After

all, another prize might just be up for
grabs: a career in GT racing.
Porsche Carrera Cups.
From trailblazer to tradition. The Porsche
Carrera Cups are staged worldwide as
part of the highest ranking national
motorsport series, such as the German
Touring Car Masters (DTM). The tradition
of the Porsche Carrera Cup spans over
20 years and, since the first Porsche
Carrera Cup Germany was staged in
1990, a further seven Porsche Carrera
Cups have become established in France,
Great Britain, Scandinavia, Italy, Japan,
Asia and Australia. Races are held on
almost every weekend of the motorsport
season. The passion to win fuels the fight
for every hundredth of a second: young
upstarts challenge old hands, while
amateurs compete with professionals.
GT sport.
GT cars are pure -bred racing cars. They
must be based on road-
registered sports
cars and modifications are restricted to
specific areas.
In the early 1990s, Porsche was the
driving force behind the renaissance of
international GT motorsport. In the
meantime, Porsche has established
successful cooperation with customer
teams. Porsche supplies the race-ready
cars and supports private teams with
further development, technical services
and the provision of factory drivers.
Whether it ’s at the FIA World Endurance
Championship, the 24 Hours of Le Mans,
the United SportsCar Championship or at
national GT championships, Porsche
private teams are regular race and
championship winners. And, since 2013,
Porsche has once more been competing
for podium finishes in factory champion -
ship races around the world.

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Responsibility
|
Environment
Since 1963, we’ve defined the 911 in terms of sporty performance.
And we’ve scrutinised it daily for its efficiency-enhancing potential.

Porsche and the environment.
We’ve already spoken about our
contribution to motorsport. To be more
precise, about our responsibility for the
future of motorsport. We meet this
responsibility with intelligent technology,
unconventional ideas and optimum
performance.
Our approach to environmental protection
is no different. In an era of intensifying
debate about global climate change and
CO
2 emissions, every automotive manu -
facturer is asking what it has to offer
right now. Our answer has long been the
same: excellent performance at the
same time as greater efficiency. Porsche has managed to reduce fuel

consumption across all model ranges
by a double- digit percentage compared
with the respective previous model even
though performance has been increased.
This is made possible by an efficient
drive concept (e.g. DFI and VarioCam
Plus), lightweight construction, optimised
aerodynamics and low rolling resistance.
The environmental management team
at the Porsche Development Centre
in Weissach aims to demonstrate a high
level of environmental responsibility.
Here, technological developments are
carried out with environmental protection in mind. The goal is to enhance perfor
-
mance – but, where possible, not at the
expense of the environment. We achieve
this goal with Intelligent Performance, as
epitomised by the 911.
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.

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Responsibility
|
Environment
Exhaust emission control.
Vehicles manufactured by Porsche
demonstrate that even high-performance
sports cars can achieve moderate
fuel consumption and exhaust emission
values in their respective category.
This is achieved, on the one hand, through
the use of fuel- efficient technologies such
as auto start /stop, thermal management,
electrical system recuperation, direct fuel
injection, VarioCam Plus and, in conjunction
with optional PDK, coasting mode.
On the other hand, cataly tic converters
developed for the 911 provide efficient
emission control.
The stereo Lambda control circuitry
controls and monitors each cylinder bank
separately. For each exhaust tract,
oxygen sensors regulate the composition
of the exhaust gas, while another Lambda
sensor on each cylinder bank monitors
pollutant conversion in the respective
catalytic converter.

Fuel economy and recycling.
Intelligent lightweight construction has
been fundamental to the Porsche identit y
since 1948, for both technical and
ecological reasons. This forms the basis
for achieving low fuel consumption
values in conjunction with outstanding
performance.
On the technical side, we use a high
proportion of aluminium, magnesium,
plastics and super-high-strength sheet
steel. The materials used have been
selected for their ability to withstand
load, yet they are considerably lighter
than conventional steel. On the ecological side, all materials used
are meticulously selected. All synthetic
components are easily recyclable and each
material is labelled to facilitate its separa
-
tion for recycling. The reduction in the
number of plastic variants helps to ensure
more efficient recycling. Recycled plastics
are used where they meet our exacting
technical requirements.
In short, the 911 is around 95 %
recoverable.

In addition, Porsche uses a high propor -
tion of environmentally friendly water-
based paints. For us, environmental
protection does not begin at the end of
a vehicle’s life. It starts at the planning
and development stage.
Fuel.
All Porsche models – including the 911 –
are designed to operate on fuels with an
ethanol content of up to 10 %, e.g. ‘E10’.
Ethanol has a positive impact on the CO
2
balance since the plants grown for the
production of this biofuel also absorb
CO
2 from the atmosphere.
The release of hydrocarbons from the
fuel system has been minimised thanks,
in no small part, to the active carbon
filter and the multilayered material from
which the fuel tank is made. All fuel lines
are made from multilayered plastic, steel
or aluminium.
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.