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The latest evolution of
Volkswagen’s pioneering DSG
twin-clutch gearbox, now
featuring seven gears, greater
efficiency and a more compact
design is set to make its debut
in the new year.
The new transversely mounted
seven-speed DSG gearbox is
revolutionary. It distances
itself from the existing
six-speed DSG gearbox, which
uses a pair of clutches immersed
in oil, by adopting a pair of
dry clutches. This not only
saves considerable weight and
improves the efficiency of the
system but also makes the new
gearbox more compact.
Available in addition to, rather
than replacing, the existing DSG
gearbox the new seven-speed DSG
system is designed to operate
under moderate power and torque
loadings. From launch the new
gearbox will be available linked
to the new 1.4-litre TSI 122 PS
engine.
In
the Golf hatchback, compared
with the six-speed manual
version, the new seven-speed DSG
brings a 10 g/km CO2
saving (down from 149 g/km in
the manual to 139) and a fuel
economy improvement of over 3
mpg (combined 44.8 mpg for
manual and 47.9 for seven-speed
DSG). It is also possible to
combine this gearbox with the
1.9-litre TDI diesel unit with
Diesel Particulate Filter.
With the addition of an extra
ratio the new gearbox allows the
seven-speed DSG system to
deliver the seemingly
contradictory virtues of greater
performance combined with
greater economy. The lower
gears are more closely spaced,
meaning in-gear acceleration is
improved to aid overtaking
manoeuvres, while the higher
gears are lengthened to reduce
loading on the engine and
maximise economy.
As
with the six-speed DSG gearbox,
of which over a million have
been produced since launch, the
new seven-speed system features
a hill-hold function to aid
starts when the vehicle is on an
incline.
The new seven-speed gearbox will
make its debut in the UK in
February and is now open for
ordering at any Volkswagen
Retailer. Prices will start at
£15,982 when applied to the Golf
S 1.4-litre TSI 122 PS. |