Porsche 911 TARGA 4 -, User Handbook Manual

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39 38
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 deceler-
ation 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 62–49 mph in anticipation of the
change of speed limit ahead. As soon as
you release the accelerator pedal, PDK
automatically deselects the current gear
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 appro priate
gear smoothly and seamlessly within a
fraction of a second.
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.
Authentic style | Drive
For fuel consumption and CO
2
emissions, please refer to page 103.