Volkswagen Golf GTI 2016 Owner's Manual page 389

Push the child restraint down with your full weight to get the safety
belt really tight so that the seat cannot move forward or sideways
more than about 1 inch (2.5 cm).
Fasten the harness webbing that is part of the child restraint
system securely and pull it tight so that you can only slip one
finger underneath the shoulder belt portion at the child's chest.
Attach the tether strap to the tether anchorage for the seating
position where the child restraint is being installed → Securing a
child restraint with the Top Tether strap .
The airbag on the passenger side makes the front seat a potentially
dangerous place for a child to ride. The front seat is not the safest
place for a child in a forward-facing child restraint. It is a very
dangerous place for an infant or a larger child in a rearward-facing
seat.
You must take special precautions when installing a child restraint
with the vehicle safety belt or with LATCH/UCRA lower universal
anchorages behind the front passenger seat or behind the driver
seat. Always route the center safety belt and the unused safety belt
for the seating position where the child restraint is being installed
securely out of the child's reach. Securing the safety belts will help
prevent a child from playing with an unused safety belt and
becoming entangled with it → Using a child restraint on the rear