In-depth baby product reviews led by a Pediatrician

Britax Allegiance Review

Better crash test results make this easy to use, inexpensive seat a winner
Britax Allegiance
Credit: Abriah Wofford
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Price:   $190 List | $189.99 at Amazon
Pros:  Price, easy to use, best head sensor crash test
Cons:  Less padding, somewhat harder to install using vehicle belt
Manufacturer:   Britax
By Juliet Spurrier, MD and Wendy Schmitz  ⋅  Jun 12, 2019
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73
OVERALL
SCORE


RANKED
#6 of 18
  • Crash Test - 35% 8
  • Ease Of Install - LATCH - 20% 7
  • Ease Of Install - Belt - 15% 6
  • Ease Of Use - 15% 8
  • Comfort / Quality - 10% 7
  • Weight / Size - 5% 6

The Skinny

The Britax Allegiance is an impressive lower-cost car seat by Britax. This seat has the best crash test head sensor result, is easy to use, nicer quality, at a reasonable price. We like that the Allegiance has the push-button LATCH anchors, belt lock-offs, and an easy to use harness height non-rethread adjustment assembly. The Allegiance has less padding than the other Britax options, and it can be somewhat more challenging to install, especially using your vehicle belt. However, given the impressive crash test results and its general ease of use, we think it is an excellent buy for the price. If you think you'd like a little more padding for comfort or potential safety, then the Britax Emblem may be a better choice for you for only $40 more.

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Britax Allegiance
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Britax Allegiance
Awards  Editors' Choice Award Editors' Choice Award  Best Value Award 
Price $190 List
$189.99 at Amazon
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Pros Price, easy to use, best head sensor crash testBest crash test results, rear-facing till 50 lbs, priceGreat crash test results, easy to use, attractive price, lighterPrice, easy LATCH installation, easier to useBudget-friendly, better crash test results, narrow
Cons Less padding, somewhat harder to install using vehicle beltNot the best quality, harder belt installationHarder to install using the vehicle beltAverage crash result analysisThin padding, harder to install, lower quality
Bottom Line Better crash test results make this easy to use, inexpensive seat a winnerBest crash test results on a budget-friendly seat that lets little ones sit rear-facing for longerA lightweight, easy to use seat with excellent crash test result and priceSlightly better than an average seat with no real standout featuresInexpensive choice with impressive crash test results
Rating Categories Britax Allegiance Graco Extend2Fit Britax Emblem Graco SlimFit All-i... Evenflo Tribute LX
Crash Test (35%)
8.0
9.0
8.1
6.0
8.0
Ease Of Install LATCH (20%)
7.0
7.0
7.0
8.0
5.0
Ease Of Install Belt (15%)
6.0
7.0
6.0
7.0
5.0
Ease Of Use (15%)
8.0
7.0
8.0
7.0
7.0
Comfort Quality (10%)
7.0
6.0
8.0
6.0
3.0
Weight Size (5%)
6.0
5.0
6.0
5.0
10.0
Specs Britax Allegiance Graco Extend2Fit Britax Emblem Graco SlimFit All-i... Evenflo Tribute LX
Min/Max Rear Facing Passenger Weight 5 - 40 lbs 4 - 50 lbs 5 - 40 lbs 5 - 40 lbs 5 - 40 lbs
Min/Max Forward Facing Passenger Weight 20 - 65 lbs 22 - 64 lbs 20 - 65 lbs 22 - 65 lbs 22 - 40 lbs
Max Rear Facing Passenger Height Child's head must be at least 1 in. below the top of the head restraint Child's head must be at least 1 in. below the top of the head restraint Child's head must be at least 1 in. below the top of the head restraint 40" and the child's head must be at least 1 in. below the top of the child restraint. 37"
Max Forward Facing Passenger Height 49" and the child's ears must be below the top of the head restraint. 49" and the child's ears must be below the top of the seat shell. 49" and the child's ears must be below the top of the head restraint. 49" and the child's ears must be below the top of the seat shell. 40"
Measured Rear Facing Seat Weight 18.5 lbs 18.7 lbs 18.8 lbs 18.6 lbs 9.3 lbs
Measured Forward Facing Seat Weight 18.5 lbs 18.7 lbs 18.8 lbs 18.6 lbs 9.1 lbs
Width 18.8" 19.6" 18.9" 19" 17"
Recline Positions 1 Rear Facing
2 Forward Facing
4 Rear Facing
3 Forward Facing
1 Rear Facing
2 Forward Facing
4 Total
2 Rear Facing
2 Forward Facing
1 Booster
1 Rear Facing
1 Forward Facing
Max Recline Angle 42° 51° 42° ° 45°
Shoulder Harness Positions 10 10 10 10 4
Crotch Strap Positions 2 2 2 3 2
Built in Lock Off Yes No Yes No No
Anti-rebound Device No No No No No
Head Support No No No No No
Newborn Insert Yes Yes Yes Yes No
No Rethread Harness Yes Yes Yes Yes No
Onboard Manual Storage Yes Yes Yes Yes Yes
Level Indicator On Seat Line on Decal Ball in Tube. Line on Decal Ball in Tube. Line Molded onto Shell
Foam Type EPP EPS EPP EPS EPS
Seat Lifespan 7 7 yrs 7 10 yrs 6 yrs
Warranty 1 Year 1 Year 1 Year 1 Year 90 Days

Our Analysis and Test Results

Essentials is a Britax company that consists of budget-friendly products for parents looking for safety and quality without the high price. Britax launched the Essentials line as a "value brand" to help delineate the difference between the Britax car seats and value versions that cost less. Currently, Essentials includes the Allegiance and the Emblem convertible car seats. Recently, Britax absorbed the Essentials line into their ordinary Britax group of products.

Performance Comparison



The Allegiance uses EPP foam for impact absorption. This foam is...
The Allegiance uses EPP foam for impact absorption. This foam is less brittle than the standard foam and doesn't off-gas.
Credit: Abriah Wofford

Crash Test


The Allegiance earned a respectable score for crash test results and the BEST head sensor (HIC) results in the review. All seats sold in the US must meet or exceed the FMVSS 213 Federal Safety guidelines. Therefore, all of the seats in this review are considered safe and provide at least a basic level of safety. Some seats, as indicated by better than the average test results, potentially offer an additional margin of protection. The Allegiance is one of these products.

The Allegiance has the best HIC result out of all the products with a 186. The next closest is 218 for the Britax Emblem with a 218. The maximum allowed for this test is 1000 with lower results being better as it means fewer Gs exerted in the head area. The chart below shows the results of the sensor.

The Allegiance earned the best HIC score in the review with a 186...
The Allegiance earned the best HIC score in the review with a 186, far below the average for the group.
Credit: BabyGearLab, MGA Research
The Allegiance chest clip sensor results are 43 and the best in the...
The Allegiance chest clip sensor results are 43 and the best in the group is 33.4 for the Clek Foonf.
Credit: BabyGearLab, MGA Research

The chest clip sensor result (g clip) for the Allegiance is 43, where the maximum allowed is 60, and lower results are always better. The best for the group is 33.4 earned by the Clek Foonf. The Allegiance result is well below the maximum allowable result and is better than seven of the competitors. These results give the Allegiance one of the best-combined results for the group. Not too shabby for a value seat.

Installing the Allegiance with the LATCH anchors is easier than the...
LATCH installation is both easier and feels slightly more stable...

Ease of Install - LATCH


Installation of the Allegiance is easiest using the LATCH method, which makes sense as this should theoretically be the easiest installation method for any seat. While it lacks a center strap or self-ratcheting straps, the Allegiance manages to be easy to install because it has two straps instead of one for a tighter, more secure fit. The straps require more strength to pull than those with unique features that help you, but it isn't as challenging as some of the competition, and most parents will find it manageable.

The Allegiance has the push button style LATCH connectors that are...
The Allegiance has the push button style LATCH connectors that are easier to attach and remove than the clip style anchors.
Credit: Abriah Wofford

The Allegiance has the push button style of LATCH anchors that we find more comfortable to use. Pushing the anchor into place and pressing a button to release is more straightforward than the clip style.

The recline angle line on the Allegiance is not a true level but...
The Allegiance has a recline feature to help parents find the right...

The level of the Allegiance is located on the base side and is a line (above left) you observe in relation to the ground under the car, not the car itself. If the angle needs adjustment, you can use the angle adjustment underneath the seat (above right) to find the right angle for proper installation.

Eventually, you will need to install your Allegiance using the...
Installing the Allegiance in the rear-facing configuration using the...

Ease of Install - Belt


Eventually, all convertible car seats need to be installed using the vehicle belt and the Allegiance is no exception. While not as straightforward and simple as the LATCH it is still fairly easy to install using the vehicle belt. It isn't that installing this seat with your vehicle belt is difficult; it just isn't as easy as some of the competition.

The belt lock-off on the Allegiance can be hard to get to given the...
Getting the vehicle belt tight enough in the lock-off on the...

The belt pathway is harder to use and threading the belt means removing the cover and padding so you can find and use the lock-off (above left). Even so, the fabric can get in the way of the lock-off leaving you wishing you had a third hand. Is it manageable? Sure. Is it simple and easy? Not really. The lock-off can be hard to close and harder to open if you get the seat belt nice and tight (above right).

The Allegiance belt pathway for rear-facing installation is shown...
The forward-facing belt pathway is easy to use, but the lock-off...

Rear-facing installation with a lap/shoulder combo (above left) is the most difficult to thread and tighten. The forward-facing installation (above right) is somewhat easier and the one you are most likely to have to do at some point if your car has LATCH thanks to weight restrictions as your child grows. Plus, it is also the most stable installation when using the vehicle belt.

Adjusting the height of the harness straps is easy on the Allegiance...
Adjusting the height of the harness straps is easy on the Allegiance with the non-rethread assembly that works by squeezing the lever and sliding the unit up or down.
Credit: Abriah Wofford

Ease of Use


The Allegiance earns a respectable result for ease of use, just one point below the high for the metric. Your daily interactions with this seat are unlikely to cause any frustrations thanks to a straightforward design with features that work as expected.

The Allegiance buckle and chest clip are the same as all other...
The Allegiance buckle and chest clip are the same as all other Britax options and are somewhat stiff but not challenging enough to merit two hands.
Credit: Abriah Wofford

Harness


This seat has the same buckle and chest clip as the other Britax options. They are stiff but manageable without additional effort or hands. The harness height adjusts by squeezing the top and sliding the assembly/headrest up and down. This process is easy to do with your baby in the seat with no need for rethreading. It has ten shoulder strap height positions and two crotch strap positions for a personalized fit for most children.

The harness release button on the Allegiance is hidden under the...
The harness release button on the Allegiance is hidden under the cover to keep it out of the reach and thoughts of little ones.
Credit: Abriah Wofford

The Allegiance has a harness tightening strap at the foot of the seat and a release button right above it under the cover. Both are straightforward and work without excessive force.

The LATCH connectors click into the base on the Allegiance when not...
The user manual for the Allegiance stores in a pocket on the cover...

LATCH Storage


The LATCH anchors store on the seat base and click in place on the back of the seat (above left). The storage location keeps the straps out of the way, so they don't interfere with the installation and aren't accessible by little ones. The manual storage is behind the fabric in a pocket on the seat back. This location prevents little ones from playing with it, but it does mean it damage can happen if your child gets sick or spills something.

Cover


The cover of the Allegiance is easy to remove and replace. It needs hand washing and line drying, which isn't as useful as machine washable, but we will take it over spot clean only.

The shell of the Allegiance almost covers everything but it isn't as...
The bottom of the Allegiance is relatively smooth with less...

Comfort/Quality


The Allegiance offers less padding and fabric that feels less durable than more expensive Britax competitors. This car seat is nice looking but basic in design and the materials used. While it is well designed and the elements come together pleasingly without mistakes, it doesn't feel as sturdy or durable as the traditional Britax line. The lack of extra padding and self-containment hurt the Allegiance in this metric. Compared to the competition, it lacks significant features for comfort, and it looks sloppy with the straps and back exposed. The overall fit and finish are good, and the Allegiance's score for this metric is only two points lower than the high.

The Allegiance is a convertible car seat with better than average...
The Allegiance is a convertible car seat with better than average comfort and quality.
Credit: Abriah Wofford

Weight


The Allegiance weighs 18.5 lbs and is 18.8 inches across. These measurements are part of the equation that helped the Allegiance perform better than average for weight and size.

While a weight over 18 lbs seems excessive, it isn't that heavy given when you consider that most of the competition weighs more. The same concept holds true for the width measurement where several options are wider than the Allegiance. If you need to fit more than one safety seat or a combination of seats and people in your backseat, we suggest measuring your vehicle or buying from a retailer with a generous return policy.

Juliet Spurrier, MD and Wendy Schmitz

Honest, objective reviews. Led by a Pediatrician.

BabyGearLab was founded by a Pediatrician Mom with a mission to provide a reliable, independent, source of information to new parents. Our experts have tested thousands of baby and kids products to share key performance, health, and safety findings. We spend tens of thousands of dollars crash testing car seats to inform our ratings. And, we combine our review work with gobs of expert parenting advice. To assure complete independence, we buy all the products we test ourselves. No sponsored content. No ads. Just real, honest, side-by-side testing by people who care.

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