PEUGEOT 4008 Online Manual page 166

Safety
(a) universal child seat: child seat which
can be installed in all vehicles using the
seat belt.
(b) group 0: from birth to 10 kg. Infant car
seats and "car cots" cannot be installed on
the front passenger seat.
(c) Consult the legislation in force in your
country before installing your child on
this seat.
(d) to install a child seat on a rear seat,
rearward or forward facing, move the front
seat forward, then straighten the backrest,
so as to leave sufficient space for the child
seat and the child's legs.
164
U: seat suitable for the installation of a child
seat secured using the seat belt and
universally approved, "rearward facing"
and/or "forward facing".
X: seat not suitable for the installation of a
child seat of the weight group indicated.
L-: only the child seats indicated can be
installed on the seat concerned (depending
on country of sale).
Remove and stow the head restraint
before installing a child seat with a
backrest on a passenger seat. Refit the
head restraint once the child seat has
been removed.