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Britax First Class Plus Car Seat Group - Black Thunder

Retail Price:  £159.99
Price:  £129.99
You save:  £30.00 (19%)

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Standard Package: 1

Manufacturer: Britax Röomer

Item Number: OTMBFCS

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Visit our showroom in Wallingford, Oxon, OX10 8DY, Tel: 01491 821877


The Britax First Class Si car seat Group 0 & 1 is suitable from birth all the way up to 18kg, (approximately 4 years). Making it excellent value for money for a quality car seat. The  Britax First Class Si car seat is a versatile combination car seat; it can be installed rear facing for your newborn, and forward facing from 9kg so it provides lasting safety and value for you and your baby.

The Si in Britax First Class Si stands for side impact and it has this in the form of deep softly padded side wings giving your baby or toddler optimum side impact protection. The seat has an extended recline position when it is rearward facing, which together with the newborn insert, makes a more natural sleeping position. When front facing the Britax First Class Si car seat has 5 positions ensuring a comfortable and safe journey for your infant.

In car seat terms
Group 0 is from 0-9 kgs or approximately 0 - 9 months
Group 1 is from 9-18kgs or approximately 9months to 4 years.

Fitting: Please check that this seat will fit your car - use the Britax Fit Finder to help you or come and visit our showroom for a full free fitting session.

Check out our definitive guide to choosing, buying and safely fitting your car seat.

Reviews - "Comfy and Easy to fit"
I am so pleased with the First Class SI car seat. I wanted a car seat that could be used from birth from 4 years as it seemed like a great way to save money, and Milly has been comfy in it right from her first trip home from hospital! The newborn insert kept her upright and she seems to be equally comfortable without when she got too big. The seat is large compared to the little car seats designed to be carried around, but is nicely padded, and easy to wipe clean. We have used it in a few different cars and once you've got the hang of it, it is easy and quick to fit, and light to carry. Milly seems to be in a good position, not hunched over, and she loves looking out of the window! A brilliant buy!

Safety Note

  • Never use any rear facing child seat on a passenger seat fitted with an airbag.


  • Suitable from Birth to 18kgs.
  • Deeply softly padded side wings for optimum side impact protection
  • Ideal if your child has outgrown an infant carrier but can't yet travel forward facing
  • Alternative belt routing for fitting in a wider range of cars
  • Slim base for a better fit in modern sculpted seats


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Recent Reviews:

Great buy to last a few years
I bought this seat for my first child when he was 3 months old to use as a second car seat. It was great as it can fit into older style cars easily as it has 2 different fitting mechanisms.

The newborn insert is very good and made him look very secure in a bigger seat. The recline is very easy to use. I am now using it as a forward facing seat and it is still roomy enough for my now 2 year old with a padded coat and I've had my friend's 3 year old in it too with no swashing problems.

The only downside ...

Review by : Annis (Mother of 2, 2 years and 5 months) on 02 Mar 2008