Hi there! We're here to help you decide between the Britax Marathon ClickTight 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 Marathon ClickTight | 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 | 4.65 | 4.40 |
Our Thoughts
When considering a convertible car seat that is both reliable and versatile, two options come to mind: the Britax Marathon ClickTight and the UPPAbaby Knox. Both can transition from rear-facing to forward-facing, accommodating your child from infancy to toddlerhood.
The Britax Marathon ClickTight stands out for its safety features and great ease of installation. With its ClickTight installation system, it ensures that the car seat is fastened securely and correctly, ensuring your child's safety. The fabric is crafted without flame-retardant chemicals, providing children a safer, chemical-free environment. Its machine-washable padding also adds convenience for maintaining cleanliness. On the downside, some users have pointed out that larger children might find the dimension of the seat less accommodating.
On the other hand, the UPPAbaby Knox is known for its stylish design and luxurious feel. Its Koroyd technology in the base is designed to absorb crash impact forces, providing advanced safety beyond standard requirements. However, this car seat has its setbacks. The Knox is significantly bulkier, which might not suit smaller vehicles, and lacks the Britax's ClickTight system. This might put parents through more hassle when moving the seat between cars. Also, note that the maximum weight capacity for the Knox in rear-facing mode is 45 pounds, while the Britax can accommodate kids up to 40 pounds in the same mode.
Analyzing these two side by side, it's clear that the Britax Marathon ClickTight offers a well-rounded blend of safety, ease of installation, and convenience. It provides durable construction and long-lasting use, which in the long run justifies its price point. If you frequently move the car seat between vehicles or if you're health-conscious, this one is particularly suitable for you.
On the other hand, the UPPAbaby Knox might be your preferred choice if luxury and aesthetics are of higher priority. Its high-end materials and sleek design set it apart in the market. However, unless your family vehicle is spacious, and you don't need to frequently move the car seat, the practical limitations of this product might prove too inconvenient.
Choosing between these two ultimately depends on your needs and preferences. If you prefer a more convenient, easy-to-install, and child-friendly choice, I'd recommend the Britax Marathon ClickTight. Conversely, if you don't mind working with the Knox's installation challenges and size, and hold aesthetics in high regard, the UPPAbaby Knox might be your ideal pick.
Key Details
Marathon ClickTight | Knox | |
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Brand | Britax | UPPAbaby |
Type |
Convertible Rear-Facing Forward-Facing |
Convertible Rear-Facing Forward-Facing |
Weighted Rating | 4.65 | 4.40 |
1 yr Price Range | $224.99 - $339.99 | $299.99 - $349.99 |
Current price |
Currently unavailable
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Currently unavailable
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Value |
![]() Offers durable construction and long-lasting use, justifying its price point. |
![]() The Knox is priced at the higher end of the market without corresponding enhancements in convenience or functionality. |
Safety |
![]() Includes superior side impact protection and a steel frame for enhanced safety. |
![]() Features like integrated Koroyd technology and Side Impact Pods offer advanced safety beyond standard requirements. |
Features |
![]() Equipped with the ClickTight installation system and multiple recline positions. |
![]() 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 simplifies installation, making it straightforward and reliable. |
![]() Installation challenges are frequently noted, which could be a significant deterrent for parents who need to move the seat between vehicles. |
Cleaning |
![]() Features machine-washable padding, offering convenience in maintenance. |
![]() The machine-washable fabric is a convenient feature, allowing for easier maintenance and cleanliness. |
Size |
![]() While not the most compact, its size is typical for convertible car seats. |
![]() 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 Marathon ClickTight 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 Marathon ClickTight | UPPAbaby Knox | |
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Height Range | 0 - 49 inches | 0 - 49 inches |
Weight Range | 5 - 40 pounds | 14 - 45 pounds |
Forward-facing
Britax Marathon ClickTight | UPPAbaby Knox | |
---|---|---|
Height Range | 0 - 49 inches | 0 - 49 inches |
Weight Range | 20 - 65 pounds | 25 - 65 pounds |
Booster
Neither car seat has a Booster configuration.
Dimensions and Weight
Britax Marathon ClickTight | UPPAbaby Knox | |
---|---|---|
Width | 18.5 inches | 18.8 inches |
Height | 23.0 inches | 32.5 inches |
Depth | 23.7 inches | 23.8 inches |
Weight | 28.5 pounds | 32.5 pounds |
Core Specifications
Britax Marathon ClickTight | UPPAbaby Knox | |
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Model Year | 2021 | 2022 |
Made In | USA | China |
Frame Material | Reinforced Steel | Koroyd Technology |
Safety and Compliance
Britax Marathon ClickTight | UPPAbaby Knox | |||||||||||||||||||||||||||||||||||||||||
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Federal Safety Standards | Meets all 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 |
Rear-Facing Mode
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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 Marathon ClickTight | UPPAbaby Knox | |
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Attachment Methods |
LATCH Seatbelt |
LATCH Seatbelt |
Harness Type | 5-Point | 5-Point |
Cup Holders |
No cup holders |
Has cup holders. |
Warranty and Durability
Britax Marathon ClickTight | 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 Marathon ClickTight Full review of the UPPAbaby Knox |