Many of you will know how much of a Britax fan I am. Over the 12 years we have been parents, we have had a variety of Britax car seats, and each time we are impressed with the quality and safety aspects of each seat.
We have recently been trying out the Britax Kidfix III M car seat, which is designed for children from 15-36kg (approx 3.5 – 12 years). It is designed with a longer seating area and soft front section for ergonomic leg positioning, to make it comfortable for taller children as well as pre-schoolers. The wider V-shaped backrest grows with the child, offering a cosy fit for smaller children and providing more space as they grow. and has the usual combination of safety and comfort.
Fitting the Kidfix III M was super simple, thanks to the Isofix guides. We just lined them up with our Isofix bars, and the seat slides into place with a click. It’s not too heavy for a high back booste either, so if you need to swap between cars it wouldn’t be too much of an issue.
One of the things we love most about Britax car seats is their superior safety features, and the Kidfix III M is no exception. The industry first SecureGuard helps to keep the lap belt in an optimal position over the child’s pelvic bones, which prevents the seatbelt from sitting on any pressure points or pulling tight if you need to brake suddenly. On the sides of the seat are the SICT (side impact cushion technology) provides superior side impact protection. The Kidfix III M has an adjustable SICT ‘wheel’, which means if there is a larger space between the car seat and the edge of your car, you can unscrew the wheel to ensure maximum side impact protection. All of this, combined with the large side wings providing all-around protection for your child, means you can travel peacefully, knowing your precious cargo is as safe as can be!
As Max grows, this car seat will grow with him. The backrest and headrest are adjustable, and as you increase the height, it automatically adjusts the seatbelt positioner too, so you always have the diagonal seat belt in the optimum position.
The seat covers are removable and machine washable – because we all know kids can make their car seats pretty messy! The Kidfix III M also comes in a range of colours – black, grey, midnight blue (which is the colour we have), red and purple, as well as a black and grey option in the ‘Air’ ventilated colourways. The Britax Romer website also has a fit checker, so you can pop your car details in and check the seat fits before you buy.
In our opinion, Britax have done it again, creating a safe, stylish and comfortable seat which will last for years to come. In fact, we loved this one so much I intend to get one for Eliza too!



We looked at the Britax Romer when replacing E’s seat but opted for a different brand in the end as I wanted him to have a 5 point harness. It looks like the design has come along in the last couple of years, he looks very secure there and having a headrest for older kids is so important.
nic@nipitinthebud recently posted…boys in a bucket | August 2018 siblings project
Getting the right car seat is so important #triedtested
This looks really roomy, perfect for an older child.
#TriedTested
Catherine @ Story Snug recently posted…How Winston Delivered Christmas by Alex T. Smith
This looks a great seat, certainly worth considering for the future when E grows out of her current one. #TriedTested
It looks like a really comfy seat – the winged back looks pretty wide though?
Always good to see car seat reviews – such an important purchasing decision #TriedandTested
I never knew how much I needed this seat cushion until I got one. It provides excellent support, reduces discomfort, and makes sitting for extended periods much easier. Absolutely love it!
Modern baby monitor
have become an essential part of keeping children safe while traveling. I really like the innovative seat-within-a-seat design, which allows the car seat to grow with your child as they get older. It’s a smart feature that adds comfort, extends usability, and makes it a worthwhile investment for families.
This looks like an excellent car seat! It’s definitely one I’ll be keeping in mind for the future when E outgrows her current car seat. Thanks for the helpful review!
Md Shahin recently posted…Booster Seat vs Car Seat: The Vital Safety Choice Exposed
This car seat looks strong and well built, which is exactly what I look for. My only concern is its width, since I need to fit three car seat across the back seat. Finding a safe, sturdy option that also saves space can be a real challenge!
Md Shahin recently posted…Booster Seat vs Car Seat: The Vital Safety Choice Exposed
This car seat looks fantastic! I’ll definitely keep it on my list for when E is ready to move up from her current car seat. I really appreciate your detailed review—it made this option much easier to consider.
Md Shahin recently posted…Booster Seat vs Car Seat: The Vital Safety Choice Exposed
This car seat looks incredibly sturdy and well made, which is exactly what I want for my kids. My only concern is the width because I need to fit three car seats across my back seat. Finding a car seat that is safe, durable, and slim enough to maximize space can definitely be a challenge!
Md Shahin recently posted…Mesa vs Aria Car Seat: 7 Honest Differences You Need to Know
Until what age can my child safely use thiscar seat? Also, what do you recommend for keeping a very active or hyper child calm and secure during car rides?
Md Shahin recently posted…Mesa vs Aria Car Seat: 7 Honest Differences You Need to Know
This looks like a greatcar seat and is definitely one I’ll consider for the future when E outgrows her current one.
Md Shahin recently posted…Cloth vs Leather Seats Car: 7 Honest Truths & the Clear Winner
That looks like a sturdy and well-designed car seat. The only thing that frustrates me is how wide it is, as I need to fit three car seats across the back seat of my car.
Md Shahin recently posted…Cloth vs Leather Seats Car: 7 Honest Truths & the Clear Winner