Vehicle ISOFIX Positions Table
Mass Group Size Class Fixture
Front
Passenger
Rear Out-
board Rt./Lt.
Rear Center
Intermedi-
ate Out-
board
Intermediate
Center
Other Sites
0—upto
10 kg
E ISO/R1 X IUF/IUF X N/A N/A N/A
(1) X N/A X N/A N/A N/A
0+—upto
13 kg
E ISO/R1 X IUF/IUF X N/A N/A N/A
D ISO/R2 X IUF/IUF X N/A N/A N/A
C ISO/R3 X IUF/IUF X N/A N/A N/A
(1) X NA X N/A N/A N/A
I–9to18kg
D ISO/R2 X IUF/IUF X N/A N/A N/A
C ISO/R3 X IUF/IUF X N/A N/A N/A
B ISO/F2 X IUF/IUF X N/A N/A N/A
B1 ISO/F2X X IUF/IUF X N/A N/A N/A
A ISO/F3 X IUF/IUF X N/A N/A N/A
(1) X N/A X N/A N/A N/A
II–15to
25 kg
(1) X N/A X N/A N/A N/A
III–22to
36 kg
(1) X N/A X N/A N/A N/A
Key of letters used in the table above:
• (1) = For the CRS which do not carry the
ISO/XX size class identification (A to G), for
the applicable mass group, the car manufac-
turer shall indicate the vehicle specific ISO-
FIX child restraint system(s) recommended
for each position.
• IUF = Suitable for ISOFIX forward child re-
straint systems of universal category ap-
proved for use in the mass group.
• X = ISOFIX position not suitable for ISOFIX
child restraint systems in this mass group
and/or this size class..
Always follow the directions of the child
restraint manufacturer when installing your
child restraint. Not all child restraint systems
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