Choosing a baby car seat

It's recommended to buy a baby car seat before your baby is born if possible. It's important to buy a seat that fits your car and is suitable for a newborn.

If you have your baby in hospital or a birth centre, you will need the car seat to drive your newborn home safely. It's a good idea to practise fitting the seat before your baby is born.

Tips for buying a baby car seat

What are i-Size car seats?

i-Size is a European safety standard for baby and child car seats. It's part of regulation ECE R129, which will eventually replace the old safety regulation R44/04.

The idea is that all car seats will eventually meet the tighter i-Size safety standards.

i-Size car seats usually fit into Isofix points in your car, but some seats can be fitted using a seatbelt. It's important to check how the car seat is fitted before you buy it if you do not have an Isofix point in your car.

Visit the Royal Society for the Prevention of Accidents (RoSPA) child car seats website for more on i-Size car seats.

What size car seat?

Car seats are divided into 3 main groups, depending on your baby or child's age and weight:

You can also buy combination seats that cross over these groups, such as group 0+/1 seats, which are suitable from birth until your child weighs about 18kg (40lb) or is aged about 4.

Use a rear-facing car seat for as long as your child fits into it, as these offer better protection in the event of a car accident.

Baby or child car seat fitting

Using a baby or child car seat

More help and advice on car seats

Page last reviewed: 24 November 2022
Next review due: 24 November 2025