Volkswagen Golf GTI 2016, Owner'S Manual

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enables rapid shifts between gears without loss of traction as the
dual clutch seamlessly transfers the engine power from one
driveshaft to the other during gear shifts. An output shaft for each of
the two gearbox units transmits the drive to the driven wheels via a
differential. The DSG electronic control unit, sensors, and hydraulic
control for clutch engagement and gear selection form one compact
weight-saving unit.
Thanks to the dual-clutch design, the DSG system is more efficient
than a conventional automatic transmission. For example, while
idling, a torque converter in a conventional automatic transmission
is engaged all the time (increasing load and engine fuel
consumption), while the DSG gradually opens the clutch, allowing
the engine to idle freely. In most cases, this efficiency combined
with its low weight and intelligent control means that DSG can
achieve the same or better fuel consumption than a manual
transmission. The clutches, like the clutch in a standard manual
transmission are subject to wear over time. The DSG transmission
requires periodic maintenance that is described in the ,
ChapterWarranty and Maintenance.
When the ignition is switched on and the transmission is in Reverse
(R):
The backup lights come on.