Car seats are categorised into the following groups and it is imperative that a category is chosen so the child's weight or height depending on regulation chosen, falls within the range indicated:
Table of car seat groups
Group
Child's weight *
Approx. age of child
Child's height **
0
Birth - 10 kg / 22 lb
Birth to 12 months
40 - 65 cm
0+
Birth - 13 kg / 29 lb
Birth to 18 months
40 - 85 cm
0/1
Birth - 18 kg / 40 lb
Birth to 4 years
40 - 105 cm
0/1/2/3
Birth - 36 kg / 79 lb
Birth to 12 years
40 - 150 cm
1
9 - 18 kg / 20 - 40 lb
9 months to 4 years
60 - 105 cm
1/2
9 - 25 kg / 20 - 55 lb
9 months to 7 years
60 - 125 cm
1/2/3
9 - 36 kg / 20 - 79 lb
9 months to 12 years
60 - 150 cm
2
15 - 25 kg / 33 - 55 lb
3 to 7 years
100 - 125 cm
2/3
15 - 36 kg / 33 - 79 lb
3 to 12 years
100 - 150 cm
3
22 - 36 kg / 48 - 79 lb
6 to 12 years
125 - 150 cm
*Applies to R44/04 seats. ** Applies to i-Size R129 seats.
Note: some car seats will be approved in two or more groups. This just means that these seats have the ability to adapt as your child grows, meaning they can use them for longer.