Hi there! We're here to help you decide between the Britax Poplar and the UPPAbaby Knox.
Our goal is to provide you with the information you need to feel confident that you're choosing the optimal car seat for your family's needs and budget. Let us know if you have any other questions!
At A Glance
Britax Poplar | UPPAbaby Knox | |
Type |
Convertible Rear-Facing Forward-Facing |
Convertible Rear-Facing Forward-Facing |
Current price |
Currently unavailable
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Currently unavailable
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Rating | 4.68 | 4.40 |
Our Thoughts
The Britax Poplar and the UPPAbaby Knox are two convertible car seats that are known for their quality and distinct sets of features. They both accommodate children from infancy through toddlerhood, but their similarities pretty much end there.
The Britax Poplar shines with its easy installation, thanks to its widely praised ClickTight system. This car seat also stands out with its slim profile, which makes it an optimal choice for compact cars. The Poplar offers an impressive extended rear-facing support up to 50 pounds, allowing your child to remain in the safer rear-facing orientation for a longer period. On the other hand, some users report that the headrest lacks padding, which might slightly compromise comfort during naps, and it's of a considerable weight, potentially making it less convenient if frequently transferred between vehicles.
In contrast, the UPPAbaby Knox offers luxury and style with integrated Koroyd technology and Side Impact Pods for enhanced safety. The Knox car seat is also equipped with a convenient chest clip featuring a one-button release, making it easier for parents to fasten and unfasten. However, it seems to lag behind when it comes to ease of installation, with many parents reporting difficulty on this front. The Knox, with its rather bulkier build, may not be suitable for those with smaller vehicles or those needing to fit multiple car seats. Moreover, it only supports rear-facing up to 45 pounds, which is lower than the Poplar.
Despite some minor shortcomings, both of these products have earned FAA approval for both the rear and forward-facing modes, allowing for secure travel with little ones. They also both have a lifespan of 10 years before expiration, providing long-term value for parents.
Between these two, if ease of installation, a slimmer design, and extended rear-facing weight limit are your significant considerations, the Britax Poplar would be the recommended choice. It has proven to offer a good balance between quality and cost. However, if your preference leans more towards enhanced safety features and a premium feel, and your vehicle space allows, the UPPAbaby Knox might be the one for you, albeit at a higher cost. Both seats make good investments towards your child's safety and comfort—choose one that aligns best with your family's specific needs and constraints.
Key Details
Poplar | Knox | |
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Brand | Britax | UPPAbaby |
Type |
Convertible Rear-Facing Forward-Facing |
Convertible Rear-Facing Forward-Facing |
Weighted Rating | 4.68 | 4.40 |
1 yr Price Range | $299.99 - $299.99 | $299.99 - $349.99 |
Current price |
Currently unavailable
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Currently unavailable
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Value |
![]() Offers a robust set of features at a competitive price point, balancing quality and cost effectively. |
![]() The Knox is priced at the higher end of the market without corresponding enhancements in convenience or functionality. |
Safety |
![]() Safety is a hallmark of Britax, and the Poplar is no exception, with its sturdy construction and reliable performance in safety tests. |
![]() Features like integrated Koroyd technology and Side Impact Pods offer advanced safety beyond standard requirements. |
Features |
![]() With its convertible design and user-friendly installation, the Poplar stands out in its category. |
![]() While the chest clip's one-button release and the machine-washable fabric are nice, they don't set the Knox apart in a crowded market. |
Installation |
![]() The ClickTight system is frequently praised for its simplicity and effectiveness, making installation a breeze. |
![]() Installation challenges are frequently noted, which could be a significant deterrent for parents who need to move the seat between vehicles. |
Cleaning |
![]() The seat is designed with easy-to-remove fabrics for convenient cleaning, which is a boon for busy parents. |
![]() The machine-washable fabric is a convenient feature, allowing for easier maintenance and cleanliness. |
Size |
![]() The slim profile of the Poplar is advantageous for fitting into compact cars without compromising on comfort or safety. |
![]() Its premium build comes with added bulk, making it less suitable for smaller vehicles or those needing to fit multiple seats. |
Review | Click here | Click here |
Comparison of Specifications
While features and reviews provide a sense of real-world use, the specs offer quantifiable details on sizing, limitations, and more. Comparing key measurements and ranges side-by-side is crucial for ensuring you choose a seat properly fitted for your child and vehicle.
We've compiled the weight limits, height limits, dimensions, and other vital statistics for the Britax Poplar and the UPPAbaby Knox. This data will confirm whether each seat can accommodate your child's current size and projected growth. Specs like seat depth and width are also important for assessing fit with your car's backseat.
Review the following key measurements for both seats. Pay special attention to the height and weight limits to ensure your child falls within the safe ranges.
Height and Weight Limits
Rear-facing
Britax Poplar | UPPAbaby Knox | |
---|---|---|
Height Range | 0 - 49 inches | 0 - 49 inches |
Weight Range | 5 - 50 pounds | 14 - 45 pounds |
Forward-facing
Britax Poplar | UPPAbaby Knox | |
---|---|---|
Height Range | 0 - 49 inches | 0 - 49 inches |
Weight Range | 22 - 65 pounds | 25 - 65 pounds |
Booster
Neither car seat has a Booster configuration.
Dimensions and Weight
Britax Poplar | UPPAbaby Knox | |
---|---|---|
Width | 17.0 inches | 18.8 inches |
Height | 20.5 inches | 32.5 inches |
Depth | 23.5 inches | 23.8 inches |
Weight | 27.2 pounds | 32.5 pounds |
Core Specifications
Britax Poplar | UPPAbaby Knox | |
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Model Year | 2023 | 2022 |
Made In | USA | China |
Frame Material | Reinforced Steel | Koroyd Technology |
Safety and Compliance
Britax Poplar | UPPAbaby Knox | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Federal Safety Standards | Does not meet standards | Meets all standards | ||||||||||||||||||||
Configurations FAA-Approved for Airplanes |
Forward-Facing Rear-Facing |
Forward-Facing Rear-Facing |
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NHTSA Ease-of-Use Ratings | Not rated by NHTSA. |
Rear-Facing Mode
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Previous Recalls | This car seat has never been recalled. | This car seat has never been recalled. |
Features
Britax Poplar | UPPAbaby Knox | |
---|---|---|
Attachment Methods |
LATCH Seatbelt |
LATCH Seatbelt |
Harness Type | 5-Point | 5-Point |
Cup Holders | Has cup holders. | Has cup holders. |
Warranty and Durability
Britax Poplar | UPPAbaby Knox | |
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Manufacturers Warranty Length | 1 year | 2 years |
Lifespan | 10 Years | 10 Years |
Additional Links
See all Britax car seats | See all UPPAbaby car seats |
Full review of the Britax Poplar Full review of the UPPAbaby Knox |