Best Group 3 Car Seats of 2025
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Group 3 car seats are designed for children who have outgrown their toddler seats and are ready for a booster seat. These seats are suitable for children weighing between 22 kg and 36 kg, typically aged between 6 and 12 years old. They provide a comfortable and safe seating position for children in the car, with features such as adjustable headrests and side impact protection. Group 3 car seats are an essential purchase for parents who want to ensure their child's safety while travelling in the car.
At a Glance: Our Top Picks
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Top 10 Group 3 Car Seats
CYBEX Silver Solution X-Fix Child Car Seat
The Cybex Solution X-Fix is a sturdy car seat designed for children aged approximately 3 to 12 years, ensuring comfort and safety during car journeys. It features a 3-way adjustable reclining headrest that allows you to find the perfect position for your child, enhancing their comfort. The built-in side impact protection offers peace of mind, safeguarding your little one in case of an accident. With an 11-way adjustable headrest and adjustable backrest, you can tailor the seat as your child grows, making it a long-term investment.
Cozy N Safe Logan Adjustable Car Seat
The Cozy N Safe Logan Seat is designed to grow with your child, featuring an adjustable headrest and toddler insert cushions for comfort and safety. The 5 point harness is suitable for toddlers up to 18kg, providing secure protection that can be hidden away as your child grows, transforming it into a high-backed booster. Fitting the seat is a breeze; it can be installed in various car models in just minutes using the vehicle's seat belt. Plus, the removable and washable covers make clean-ups easy after any accidents.
Kinderkraft JUNIORFIX2 Car Seat for Ages 4-12
The Kinderkraft JUNIORFIX2 is a versatile car seat suitable for children aged 3.5 to 12 years, accommodating heights from 100 to 150 cm. Its I-Size certification ensures top-notch safety, allowing you to drive with peace of mind, knowing your child is protected. The seat features reinforced side protection systems that absorb impact energy, keeping your little one safe. With easy installation via ISOFIX connectors and clear indicators, you can secure the car seat effortlessly, eliminating worries about incorrect fitting.
Kinderkraft I-Spark I-Size Baby Car Seat
The Kinderkraft I-Spark Car Seat is designed for children aged 3.5 to 12 years, accommodating heights from 100 to 150 cm. Its lightweight design makes it easy to transport between cars, enhancing convenience for busy parents. Complying with the latest R129 i-Size standard, you can rest assured knowing your child is safe in this car seat, which has undergone rigorous safety testing. Additionally, the seat features dedicated safety systems that offer excellent protection during collisions, ensuring peace of mind on every journey.
Kinderkraft Comfort UP I-Size Car Seat
The Kinderkraft Comfort UP is designed for children from 76 cm to 150 cm tall, making it a versatile choice for various ages. Its easy installation with a three-point seat belt ensures safety, while the five-point harness with soft pads keeps your child secure and comfortable. You will appreciate the adjustable headrest with 11 positions for a perfect fit as your child grows. Additionally, the breathable material adds to the comfort, making every journey more enjoyable for your little one.
Graco Affix R44 Highback Booster Car Seat
The Graco Affix Booster Seat is designed for children aged approximately 4 to 12 years, weighing between 15 and 36 kg. It features safety surround side impact protection, ensuring your child’s head and body are well-protected during journeys. The convenient isoCatch connectors keep the seat secure to your vehicle, providing peace of mind. With energy-absorbing EPS foam, it manages impact effectively, enhancing safety further. Additionally, the seat offers a five-position height-adjustable head support, allowing for a comfortable fit as your child grows.
Cozy N Safe Tambu Backless Booster Car Seat
The Cozy N Safe Tambu is designed to provide your child with comfort during both short and long journeys, thanks to its deep memory foam padding and armrests. Weighing in at a lightweight design, it can be fitted in seconds, making it perfect for swapping between vehicles. The car seat is suitable for children weighing between 22kg and 36kg and is forward-facing, ensuring safety and convenience. Plus, the covers are machine washable at 30°C, making cleaning effortless for busy parents.
MyChild Brundle Group 2/3 Booster Seat
The MyChild Brundle Booster offers a comfortable ride with its padded seat cover and arm rests, ensuring that your child feels secure and relaxed during journeys. Designed for children weighing 15kg and above, this forward-facing booster seat is perfect for growing kids. Its lightweight design makes it easy to transfer between vehicles, allowing for hassle-free travel. Additionally, it is fitted using a standard 3-point car seat belt, providing peace of mind regarding safety. You will also appreciate the convenience of machine washable covers for easy cleaning.
My Babiie Compact Folding Highback Booster Seat
The My Babiie Booster Seat is a portable highback booster suitable for children aged 4 to 12 years. Its lightweight design allows for easy transport, making it perfect for families on the go. Safety is paramount, as it meets the latest EU standards to keep your child secure during travels. Additionally, the hassle-free installation with ISOFIX and seatbelt options ensures a stable fit in your vehicle, giving you peace of mind on every journey.
Jovikids I-Size Car Booster Seat
The Jovikids Booster Seat is designed for children between 125-150cm tall, ensuring their safety while travelling in the car. It meets the ECE R129 standard, giving you peace of mind. The built-in belt guide positions the seatbelt correctly on your child's shoulder, enhancing safety during every journey. Comfort is prioritised with padded covers and little armrests, making long trips more enjoyable for your child. Its convenient design fits various car models, making it ideal for families with multiple vehicles.
Frequently Asked Questions (FAQs)
1. What is a Group 3 car seat?
According to EU car seat safety legislation, a Group 3 car seat is suitable for children weighing 22-36kg. That's around 6 to 12 years old. A Group 3 Car Seat can take many forms. For example, they can face rear or forward, be a booster cushion, or a high backed booster with or without a safety shield.
2. When can my child go in a Group 3 car seat?
Group 2/3 – 15kg to 36kg (4 years to 12 years) Group 3 – 22kg to 36kg (from 5 or 6 years and more than 125cm tall)
3. What group car seat does a 4 year old need?
Once your child reaches 18kg in weight (around the age of 4), they'll need to move to a Group 2/3 car seat. Group 2/3 car seats cater for roughly ages 4 years to 12 years and are designed for children who weigh 15kg to 36kg (33-79lbs or 2 stone 4lbs to 5 stone 9lbs).
4. What are the groups for car seats?
Group 1, 2 and 3 seats are forward-facing. The child uses the seat's integral harness, or an impact cushion, until they are 15 kg and then uses the car's seat belt, which secures the child and the seat. Group 2 and 3 seats are high-backed booster seats, although they can also be booster cushions without a back.
During our group 3 car seat research, we found 106 group 3 car seat products and shortlisted 10 quality products. We collected and analyzed 212,062 customer reviews through our big data system to write the group 3 car seats list. We found that most customers choose group 3 car seats with an average price of £50.93.
The group 3 car seats are available for purchase. We have researched hundreds of brands and picked the top brands of group 3 car seats, including Cybex, COZY N SAFE, KinderKraft, Graco, MyChild.
Hollie Coleman is a paediatrician from Cambridge. She acquired her degree from the University of Oxford, where she also built her copywriting skills. Hollie practiced as a paediatrician for seven years; she wrote and published a couple of books on baby products that sold massively in Europe. With Hollie's vast knowledge in paediatrics, she now dedicates her time to publishing more articles on baby products for FindThisBest.