Volkswagen Golf GTI 2016, Owner'S Manual, Page: 767 / 1341

Switch to Tiptronic mode by moving the selector lever from Drive
or Sport Drive (D/S) to the right into the Tiptronic position
→ Shifting with Tiptronic
®
.
Downshift by pulling the selector lever back briefly (-).
OR: Downshift using the paddles on the steering wheel → Using
Tiptronic with the shift paddles behind the steering wheel (if
equipped) .
If you stop and start up again when going uphill, you should use Hill
Hold → Starting assistance systems as long as the engine is
running.
Vehicles without Hill Hold: If you stop on a hill with the vehicle in
gear, you must depress the brake pedal or engage the parking
brake to keep the vehicle from rolling. Do not release the brake
pedal or the parking brake until the vehicle has started to move
forward → .
Kick-down acceleration
The kick-down feature permits maximum acceleration when the
selector lever is in the Drive or Sport Drive (D/S) position or in
Tiptronic mode.