Fiat 500X Owner's Handbook Manual page 104

The following table, according to European standard ECE 129, indicates the possibility of i-Size child restraint system
installation.
i-Size child restraint systems
102
i-Size POSITIONS ON THE VEHICLE
Device Front passenger
ISO/R2 X
ISO/F2 X
Rear side Rear central
passengers passenger
i-U X
i-U X