Best group 2/3 car seat in 2026

group 2/3 car seat
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Choosing a Group 2/3 car seat marks a transition toward independence for your child, but safety remains the non-negotiable priority. These high-back boosters are designed for older children, focusing on correct seatbelt positioning and side-impact protection. Our selection process prioritises i-Size compliance, ease of installation, and long-term durability to ensure you find a seat that grows with your child from approximately 3.5 to 12 years.
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Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion

Graco Junior Maxi i-Size R129 Highback Booster car...

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Kinderkraft - Kinderkraft I-Spark I-Size Baby Car Seat, Group 2/3, 100-150 cm, from 3.5 to 12 Years, 15 to 36 Kg, Light (4.5 Kg), 3-Point Seat Belt, Side Protection, Black
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  • βœ… FOR CHILDREN FROM 3.5 TO 12 YEARS: a car seat for children 100–150 cm tall (15–36 kg). It’s versatile: you install it using the car's three-point seat belt. The seat can be used without a backrest as a pad for older children who are 140–150 cm tall*. I-SPARK i-Size is lightweight (4.5 kg), which makes carrying it from car to car a breeze.
  • βœ… I-SIZE: it complies with the latest R129 i-Size standard. The fact that it holds certification based on the most-up-to-date standards shows that the car seat is safe and complies with the latest norms. The car seat has been tested under stringent conditions in side-on and head-on collisions.
Β£39.90 44.90 GBP
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globalkids - globalkids i-Size High Back Booster Car Seat, Group 2/3 ISOFIX Toddler Car Seat, with Cup Holder, Adjustable Headrest/Backrest/Width, 3–12 Years, 15-36 kg, 100cm-150cm, Red Black
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  • i-Size Car Seat - Complies with the highest safety standards ECE R129 i-Size regulation, which adding side crash testing compared to ECE R44. Additionally, it adds the protection of force-absorbing material in the seat head.
  • GROUP 2/3 Booster Seat - Child car seat offering long-term use - for children age from approximately 3 years to approximately 12 years(100-150cm, 15-36 kg).
Β£66.40 69.90 GBP
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My Babiie - My Babiie MBCSB30 Highback Booster Car Seat - 100-150cm (Approx. 4-12 Years, Group 2/3), i-Size R129, Adjustable Child High Back Seat, Padded, 8 Position Headrest - Pink & Grey
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  • CHILD CAR SEAT: The My Babiie MBCSB30 highback booster is suitable from 100-150cm (approx. 4-12 years, Group 2/3). i-Size certified and forward facing kids car seat
  • SAFETY FIRST: Designed and tested according to the latest EU safety standards (ECE R129), this high back booster seat ensures your child is safe and secure on their travels
Β£39.99 44.99 GBP
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Jovikids - Jovikids ISOFIX Car Booster Seat, i-Size R129, 125-150 cm (6–12 Years), Seat Belt Guide, Lightweight, Removable/Machine-Washable Cover - Black
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  • RELIABLE: The car seat is subject to strict controls to ensure the safety of children. It is approved according to the ECE R129 standard. Designed for children height from 125-150cm, Jovikids booster seats help older kids travel safely in the car.
  • SAFETY: There is a belt guide In order to correctly position the 3-point safety belt of the car on the child's shoulder.
Β£24.99 29.99 GBP
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My Babiie - My Babiie MBCSB30 Highback Booster Car Seat - 100-150cm (Approx. 4-12 Years, Group 2/3), i-Size R129, Adjustable Child High Back Seat, Padded, 8 Position Headrest - Blue & Black
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  • CHILD CAR SEAT: The My Babiie MBCSB30 highback booster is suitable from 100-150cm (approx. 4-12 years, Group 2/3). i-Size certified and forward facing kids car seat
  • SAFETY FIRST: Designed and tested according to the latest EU safety standards (ECE R129), this high back booster seat ensures your child is safe and secure on their travels
Β£39.99 44.99 GBP
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COZY N SAFE - Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey
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  • GROWS WITH YOUR CHILD: The Logan car seat features an adjustable headrest and toddler insert cushions keeping all children no matter their size protected and comfortable.
  • 5 POINT HARNESS: The child seat comes complete with a 5 point harness suitable for toddlers up to 18kg. This can then be hidden transforming the seat into a high backed booster.
Β£47.49 54.99 GBP
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Our Expert Verdict: group 2/3 car seat

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This list offers a strong mix of budget-friendly and feature-rich options. For most parents, the i-Size compliant models provide the best long-term safety and fit for growing children.

Market Overview: group 2/3 car seat

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The market is shifting from weight-based categories to height-based i-Size standards, with a growing demand for lightweight, easy-to-transfer seats for multi-car households.

Buying Guide: group 2/3 car seat

AI
When shopping for a booster seat, focus on the height adjustability of the headrest, the quality of the side-impact padding, and whether the covers are machine-washable for easy maintenance.

Selection Criteria

Products were selected based on safety certification (R44/R129), verified user feedback regarding installation ease, and overall value for money.

Budget Advice

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Entry-level boosters are affordable and functional, mid-range options often add ISOFIX stability, while premium models feature advanced ergonomics and superior fabrics.

Conclusion: group 2/3 car seat

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Finding the right balance between safety certifications and daily convenience is key for your family's peace of mind. Explore our full list of top-rated Group 2/3 car seats to find the perfect fit for your vehicle and budget.

Frequently Asked Questions

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Group 2/3 refers to the traditional weight-based classification (15-36kg), while i-Size is a newer standard based on the child's height (100-150cm), often providing more rigorous side-impact testing.
ISOFIX is not strictly necessary for safety as the child is secured by the car's adult seatbelt, but it helps keep the seat stable and prevents it from shifting when the child is not inside.
You should transition when your child exceeds the weight or height limit of their current seat, typically around 15kg or 100cm, depending on the specific model's guidelines.

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Why Trust This List?

Data-Driven Selection

Analysis of 0 verified customer reviews

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Last updated 1 ΠΌΡ–ΡΡΡ†ΡŒ Ρ‚ΠΎΠΌΡƒ

Independent Analysis

Objective criteria: rating, price, popularity

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Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion
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Graco Junior Maxi i-Size R129 Highback B...

34.99 GBP
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