CITROËN C3 Handbook page 147

Locations for ISOFIX child seats
In line with European regulations, this table indicates the options for installing ISOFIX child seats on seats in the vehicle fitted with ISOFIX mountings.
In the case of universal and semi-universal ISOFIX child seats, the ISOFIX size category, determined by a letter from A to G, is indicated on the child
seat next to the ISOFIX logo.
Type of ISOFIX child seat
ISOFIX size category
Seat
Passenger's seat
Row 1 (a)
Seat behind
driver's seat
Seat behind
Row 2
passenger's seat
Centre rear seat
Under 10 kg
(group 0)
Up to about
6 months
Cot
F G
Passenger's
front airbag
Deactivated
X
"OFF"
Activated "ON" X
X(1)
X(1)
Weight of the child / indicative age
Under 10 kg
(group 0)
Under 13 kg
(group 0+)
Up to about 1 year
Rearward facing Rearward facing
C D E C
IL-SU
X
IL-SU(3) IL-SU IL-SU(3)
IL-SU(2) IL-SU IL-SU(2)
Not ISOFIX
From 9 to 18 kg
(group 1)
From about 1 to 3 years
Forward facing
D A B
IL-SU IUF / IL-SU
X IUF / IL-SU
IL-SU IUF / IL-SU
IL-SU IUF / IL-SU
Safety
5
B1
145