New i-Size car seats regulation confuses parents66% haven't even heard of new i-Size car seats law

15 May 2015


i-Size approved seats will keep babies rear facing until 15 months old

66% of parents with a baby under one haven't heard of the new i-Size child car seats regulations, our Which? survey has revealed. 

Which? surveyed more than 1,000 parents with children up to the age of five and asked how many were aware of the new regulations regarding i-Size, which came into force at the beginning of April. 

A further 18% of those with a baby under one had heard of i-Size, but weren't aware of what the new car seats law covered. Only 11% had heard of it and knew details of what it covered.

Which? is urging parents to make sure they understand their car seat buying options now the new i-Size regulations are in force.  

We’ve tested the Maxi-Cosi 2WayPearl which was one of the first i-Size seats on the market.

i-Size and R129 car seats

Under i-Size (also known as R129), it's mandatory for babies to stay rear facing until they are 15 months old. Staying rearward facing in a car seat is considered safer. i-Size also means a car seat will be bought based on height, rather than the traditional weight-based group system. 

The tougher testing that R129 requires car seats to pass, before they can be sold, should mean better protection for your baby. As i-Size car seats use ISOfix connectors to attach to a car (they can't be fixed using the car's adult seat belt) this should make the task of installing a car seat much easier.

The new regulation will run side by side with the current R44.04 regulation and isn't expected to fully replace it for a few years yet.

For more information on the new regulations and what they mean for you, head to our guide on i-Size car seats

Concord Reverso

Concord Reverso is a rear-facing seat for use from birth until around four years old

Baby car seats

There are currently a handful of i-Size approved car seats already available to buy in the UK, although more are expected. 

The Maxi-Cosi 2WayPearl which was one of the first i-Size seats on the market, passed for approval to be used from 67cm up to 105cm (six months to four years).

Other seats include models from BeSafe, the Joie i-Anchor and Concord's Reverso, which comes with a special inlay making it suitable to be used from birth. 

Looking for a car seat that's performed well in crash tests? Browse our child car seat Best Buys reviews.

More on this...

  • 5 things you need to know about i-Size – do you need a new car seat?
  • Rear facing child car seats – we rate the best and worst
  • Top 10 child car seats – browse top performing seats for all groups and ages