CITROEN DS3 Handbook page 181

Installing child seats attached with the seat belt
In accordance with European regulations, this table indicates the options for installing child seats secured using a seat belt and universally approved (a)
in accordance with the weight of the child and the seat in the vehicle.
Seat
Front passenger seat (c) with
height adjustment (e)
Front passenger seat (c)
without height adjustment (e)
Outer rear seats (d)
Centre rear seat (d)
Weight of the child and indicative age
Under 13 kg From 9 to 18 kg
(groups 0 (b) and 0+) (group 1)
Up to approx. 1 year 1 to 3 years approx.
U(R)
U
U
U (f)
From 15 to 25 kg
(group 2)
3 to 6 years approx.
U(R) U(R)
U U
U U
U (f) U
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Child safety
From 22 to 36 kg
(group 3)
6 to 10 years approx.
U(R)
U
U
U