Convertible car seats are ideal for creating a single car seat solution that converts from rear- to front-facing, and grows along with a child. While it's more affordable to purchase a single car seat than upgrade a car seat as a child grows, convertible car seats can still be quite expensive, and Britax car seats tend to be on the expensive side.
That’s why the Britax Allegiance was launched. It’s a more affordable Britax convertible car seat that still offers the quality construction and safety that this popular brand is known for.
Overview of Britax Allegiance
The Britax Allegiance is a more affordable Britax car seat that incorporates many of the most popular Britax features and technologies. It has a 10-position harness that never needs rethreading, a removable cover for easy cleaning, and simple LATCH installation with clear labels on the seat itself, for minimal referring to the manual.
The Allegiance is smaller and lighter in weight than other Britax convertible car seats, with a convenient carrying handle on the top that makes it easier to move the car seat into and out of a vehicle.
What are this model’s NHTSA ratings? All car seats that are rated by the NHTSA meet federal safety and crash performance standards, so all NHTSA rated car seats are safe. However, the NHTSA also provides car seat ratings for usefulness factors beyond basic safety.
The NHTSA has rated the Britax Advocate ClickTight as follows:
- Side impact protection? Yes
- Energy-absorbing base? Yes
- Metal frame? Yes
- What is this model’s child height limit? Shoulder height – front-facing: 16.75 inches; shoulder height – rear-facing: 16.75 inches
- What is this model’s child weight limit? Rear-facing: 5-40 pounds; front-facing: 20-65 pounds
Ease of Use
Does this model have:
Ease of Installation
Comfort and Quality
Video Overview of Britax Allegiance
Britax Allegiance Specs
Child weight – rear facing
5 - 40 pounds
Child weight – forward facing
20 -65 pounds
Child standing height
49 inches or less
Child seated shoulder height – rear facing
9 – 16.75 inches
Child seated shoulder height – forward facing
12 – 16.75 inches
Car seat weight
Car seat dimensions
18.5” wide x 26” high x 21” deep
Seat area dimensions
11” deep x 11” wide
Harness slot heights
8.5” - 17.5” in 10 positions, 1 inch per increment
Buckle strap depths
5 inches and 7.5 inches
Britax Allegiance Features
Side impact protection with a foam-lined shell
Britax patented SafeCell Impact protection system, which is an integrated system of components that exceed federal safety standards. The impact-absorbing base, impact-stabilizing steel frame, and impact-absorbing tether and harness systems all work together for exceptional impact protection.
Ease of use
Quality and comfort features
Who is the Britax Allegiance Most Suitable For?
The Britax Allegiance was designed for parents who want the superior safety and quality of a Britax convertible car seat, at a more affordable price. The Britax Essentials line, launched in 2018, is a more affordable line of Britax convertible car seats that don't have the ClickTight installation system. Without the ClickTight system, these car seats are a bit more difficult to install, but the seats themselves still provide excellent protection and include many of the unique Britax safety features and technologies.
At 18.5 inches wide, and weighing less than 20 pounds, the Allegiance is a great option for parents who need a convertible car seat that will fit in a small vehicle, or in 3-across configurations (in specific makes and models).
This car seat will protect a child from infancy through 65 pounds or 49 inches in height, keeping them safe when they travel for their first several years of life, and it's a great way to get exceptional Britax protection at an affordable price.
What is included with the Britax Allegiance?
The Britax Allegiance comes with a newborn insert pillow.
Pros and Cons of Britax Allegiance
Britax Allegiance Installation
There are no videos specifically for this model. The installation videos on the Britax Child Safety Inc YouTube channel don't reference this model (and the video online appears to be one of those from YouTube), and the independent vloggers and reviewers don't show the installation process.
Britax Allegiance Manual
The user guide is available online in English and Spanish and can be found here:
Britax Allegiance vs. Britax Emblem
The Britax Allegiance and Britax Emblem were both launched in January 2018 as part of the Britax Essentials line. These car seats are extremely similar, and they are both convertible car seats with identical installation.
Both the Britax Allegiance and the Britax Emblem have:
In fact, the only manufacturing difference between the Allegiance and the Emblem is that the Emblem has two layers of side impact protection, with both a foam-lined shell and quick-adjust head protection.
When these car seats were launched, there may have been a price difference between the Allegiance and the Emblem. Today, depending on your upholstery choices, the two car seats are virtually identical in price.
Since the Britax Allegiance and the Britax Emblem are identical in size, weight, features, and price, but the Emblem has one more level of side impact protection, it seems like choosing the Britax Emblem is a no-brainer. After all, if you could give your child an extra layer of protection in the same size, type, and price in a car seat, wouldn't you?
Britax Essentials Allegiance Review by Best Buy Canada Product Reviews
Family budgets are part of the decision-making process when parents shop around for the best convertible car seats on the market. The Britax Allegiance is one of the more cost-effective choices out there.
The Allegiance offers more than a lower price tag. It is easy to use and has passed the crash test with high grades. However, if you tend to struggle with installations, it is a bit on the difficult side. The ClickTight feature and LATCH strap adjuster adds security but tends to be on the stubborn side when removing the seat.
Britax Allegiance (click image for more info)
It has ease of use when it comes to day to day activity. It is trouble-free to spot clean and has a straightforward design. It has ten shoulder strap height positions and two crotch strap positions so that you can adjust it to fit most children without getting overly frustrated.
If you tend to move a convertible car seat from vehicle to vehicle, the Britax Allegiance might not be for you. Also, the width is a bit much if you have more than one seat or a backseat passenger. But, a lot of parents choose the tradeoff because of the impressive and affordable safety.
With two kids of my own, I’m passionate about child safety! I’m a research nerd who’s on a mission to make the world a safer place for kids – starting with car seats!
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I really appreciated your review of the Britax Allegiance, however I’m now having huge safety concerns with it. My 2 year old is able to reach down and press the release button to loosen the harness. I discovered this when her arms were completely out of the straps as we were going 70mph on the highway!!!! I contacted Britax and they just said that kids are smart and I can sew the hole to access the release button so neither she nor I can access it. That’s not an acceptable solution in my opinion, particularly for a carseat that is still expensive!!