Opel Automobile Owner's Manual page 56

56 Seats, restraints
Permissible options for fitting an ISOFIX child restraint system
Weight class Size class Fixture
Group 0: up to 10 kg E
Group 0+: up to 13 kg E
D
C
Group I: 9 to 18 kg D
C
B
B1
A
IL = Suitable for particular ISOFIX restraint systems of the 'specific-vehicle', 'restricted' or 'semi-universal' categories.
The ISOFIX restraint system must be approved for the specific vehicle type.
IUF = Suitable for ISOFIX forward-facing child restraint systems of universal category approved for use in this weight
class.
X = No ISOFIX child restraint system approved in this weight class.
On front passenger seat
ISO/R1 X
ISO/R1 X
ISO/R2 X
ISO/R3 X
ISO/R2 X
ISO/R3 X
ISO/F2 X
ISO/F2X X
ISO/F3 X
On rear outboard seats
IL
IL
IL
IL
IL
IL
IL, IUF
IL, IUF
IL, IUF
On rear centre seat
IL
IL
IL
IL
IL
IL
IL, IUF
IL, IUF
IL, IUF