This child car seat has passed the regulatory tests required by UN-Regulation 129 to be sold as an i-Size child car seat for children measuring 76cm to 105cm tall, which is 18 months to four years old. But in our own tests – which are conducted at higher speeds and involve greater forces than the standard requires – this seat scored poorly during the frontal-impact crash tests.

When we carried out a front-on crash test using the Q3 dummy (which represents a three-year-old child), the connection between the seat base and the back rest broke on the side nearest the vehicle door. This caused the dummy to move forward too much, and while still restrained, there would be a risk of the dummy hitting their head on the front seat.

The seriousness of the risk means we’ve automatically downgraded this car seat to a 0% Don’t Buy. This is despite it gaining a good result in our side-impact crash tests.

Further reading:

How we test child car seats

Maxi CosiNomad Plus

i-Size toddler to child
Seat belt installation only

£150Typical price

Test score

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The Maxi-Cosi Nomad Plus is a baby to toddler car seat that can fold together and be stored in a special carry bag, which could make it a useful product if you want to take a car seat on holiday. It’s installed solely via your vehicle seatbelt and doesn’t require Isofix points. However, we uncovered issues with this car seat during our crash test, so read the safety alert to find out more.

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cons

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What is it?
How safe is it?
Is it easy to fit?
Is the seat comfortable?
Is there anything else I should know?
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KEY TEST RESULTS
Safety rating
Fitting in car
Comfort of your child

Oct 2025First reviewed by Which?
Jan 2023Released

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

Two child safety seats in the back of an orange van, each holding a crash test dummy with green heads.

How we test baby and child car seats

22 Oct 2025

Safety rating

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
Height of child	76cm-105cm
Seat size	i-Size toddler to child
Age group	Toddler
Direction of travel	Forward facing
Extended rear-facing seat	No
Installation type	Seat belt installation only
Harness or shield seat	Harness
How is the child held in the seat?	5 point harness
Manufacturer URL	https://www.maxi-cosi.co.uk/c/

Features
Adult seat belt	Yes
Isofix integrated into seat	No
Isofix base	No
Belted base	Yes
Type of Isofix	No isofix
Swivel seat	No
Weight of seat (kg)	4.4kg
Part of a travel system?	No
Harness height adjustment	Moves with headrest
Adjustable headrest	Yes

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