This child car seat has passed the regulatory tests required by ECE R44/04 to be sold as suitable for children from birth to 25kg. But in our own tests, which are conducted at higher speeds and stronger forces than the standard requires, this seat gets an average safety rating. Our lab experts spotted issues when tested in group 2 mode (from 15 to 25kg). It’s also scored poorly for ease of use and the risk of incorrect installation. Any car seat scoring 45% or less will become a Which? Don't Buy.

Maxi CosiBeryl

Group 0 plus/1/2
Isofix and belt installation possible

£319Typical price

Test score

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The Maxi Cosi Beryl is a multi-stage car seat designed to last your child from birth to when he or she weighs 25kg, which is around seven years old. That’s a long time, and our car seat lab experts will check whether there’s room for the average six or seven year old to sit comfortably so you can use it for its full lifetime. Read the full review of this car seat to find out their thoughts.

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cons

What's included?

What is it?
How safe is it?
Is it easy to fit?
Is the seat comfortable?
Is there anything I should watch out for?
Is there anything else I should know?
Should I buy it?
Where can I buy it?

Full Access first month £5, then £10.99 per month, cancel at any time

KEY TEST RESULTS
Safety rating
Fitting in car
Comfort of your child

Apr 2024Last checked by Which?
Apr 2020First reviewed by Which?
Aug 2019Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test baby and child car seats

3 Jan 2024

Safety rating

Overall
Rear-facing group 0/group 0+ (Isofix)
Forward-facing group 1 (Isofix)
Forward-facing group 2 (Isofix)

How we test safety rating

The overall safety score is made up of the results of crash testing (front crash; side crash) seat design, stability in the car and belt routing. Our crash tests go beyond the legal minimum requirements for UK car seat regulations and are conducted at higher speeds and forces than the regulations require. We feel our tests more accurately reflect what could happen in a real life crash.

Fitting in car

Overall
Buckling up
Avoiding misuse and instructions
Cleaning
Space required in car

How we test fitting in car

Fitting and using includes: How easy it is to install the seat correctly in the car. How easy it is to strap a child securely into the seat. How well the seat is designed in order to prevent incorrect use. How easy the seat cover is to remove and wash. How little space the seat takes up in the car and how comfortable your child is in the seat.

Ergonomics

Overall
Comfort of your child

How we test ergonomics

Our experts conduct an ergonomic assessment of each seat to make sure your child will be in the best position when travelling, along with the level of padding and support. Our tests also reveal how much space this car seat takes up in the back seat of a car and how easy it is to get your child in and out of the seat. Plus, our eagle-eyed car seat experts will check whether this seat affects how much space any front passengers have. This assessment was introduced to our site in May 2015. If a seat does not have this score, it was tested before May 2015.

General
Weight of child	0kg to 25kg
Seat size	Group 0 plus/1/2
Age group	Multigroup
Direction of travel	Reversible
Installation type	Isofix and belt installation possible
Harness or shield seat	Harness
How is the child held in the seat?	5 point harness
Manufacturer URL	https://www.maxi-cosi.co.uk/

Features
Adult seat belt	Yes
Isofix base	Yes
Belted base	Yes
Type of Isofix	Base with Isofix connectors and support leg
Weight of seat (kg)	8.2kg
Weight of base (kg)	7kg
Harness height adjustment	Moves with headrest
Recline	Yes
Adjustable headrest	Yes

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Maxi CosiBeryl

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pros

cons

What's included?

How we test baby and child car seats

Safety rating

Fitting in car

Ergonomics

How this product's score compares with other child car seats we've tested

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Maxi CosiBeryl

pros

cons

What's included?

Test results

Specifications

Best Buys & Don't Buys

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