Hi there! We're here to help you decide between the Britax Marathon ClickTight and the CYBEX Sirona S.
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 | CYBEX Sirona S | |
| Type |
Convertible Rear-Facing Forward-Facing |
Convertible Rear-Facing Forward-Facing |
| Current price |
In stock (2 varieties available)
$299.99 - $299.99
|
In stock
$299.00
|
| Rating | 4.65 | 4.03 |
Our Thoughts
When it comes to comparing the Britax Marathon ClickTight and the CYBEX Sirona S, both offer solid options as convertible car seats designed to accommodate your child from infancy through their toddler years.
The Britax Marathon ClickTight is celebrated for its safety and simplicity. It shines in the aspects of ease of installation and maintenance, eschewing complexity for a more direct, hassle-free user experience. Its ClickTight installation system minimizes the stress of securing the car seat in your vehicle, while the machine-washable padding provides easy cleanup. The design also focuses on safety, with a reinforced steel frame and superior side impact protection. However, it might pose some limitations for larger children and some parents have also found adjusting the straps to be somewhat difficult.
In contrast, the CYBEX Sirona S emphasizes innovation and advanced features. Its unique 360° swivel function simplifies the process of getting your child in and out of the car. This feature, coupled with the magnetic buckle holders and adjustable recline options, makes it incredibly user-friendly. The CYBEX Sirona S goes a step further in safety by incorporating SensorSafe technology that can alert parents to potentially dangerous situations via an app on your smartphone. However, some parents might find the installation challenging and the size might be an issue in smaller vehicles.
Interestingly, the CYBEX Sirona S allows for a heavier child to stay rear-facing for longer, with a maximum weight of 50lbs, compared to the 40lbs of the Britax Marathon ClickTight. Given the advice from safety experts to keep children in a rear-facing car seat for as long as possible for safety reasons, this would be an advantage for the CYBEX Sirona S.
Both car seats, while on the pricier side, justify the cost with long-lasting durability, comfort, safety, and user-friendly features. However, your choice ultimately depends on your specific needs and priorities. The Britax Marathon ClickTight is ideal if straightforward installation and ease of maintenance are high on your list. On the other hand, if innovative features like the swivel function and the SensorSafe technology are more appealing, the CYBEX Sirona S might be worth the investment.
Key Details
| Marathon ClickTight | Sirona S | |
|
|
|
| Brand | Britax | CYBEX |
| Type |
Convertible Rear-Facing Forward-Facing |
Convertible Rear-Facing Forward-Facing |
| Weighted Rating | 4.65 | 4.03 |
| 1 yr Price Range | $224.99 - $339.99 | $439.96 - $549.95 |
| Current price |
In stock (2 varieties available)
$299.99 - $299.99
|
In stock
$299.00
|
| Value |
Offers durable construction and long-lasting use, justifying its price point. |
Offers advanced features and long-term use from infancy to toddler years, making it a cost-effective option despite its higher price point. |
| Safety |
Includes superior side impact protection and a steel frame for enhanced safety. |
Integrated with SensorSafe technology and enhanced side-impact protection, providing top-tier safety for children. |
| Features |
Equipped with the ClickTight installation system and multiple recline positions. |
The 360° swivel design, magnetic buckle holders, and adjustable recline options set it apart from standard car seats. |
| Installation |
The ClickTight system simplifies installation, making it straightforward and reliable. |
Installation can be challenging, with some parents finding it complex and time-consuming. |
| Cleaning |
Features machine-washable padding, offering convenience in maintenance. |
The seat cover is removable and machine washable, simplifying the cleaning process. |
| Size |
While not the most compact, its size is typical for convertible car seats. |
While it’s not the most compact, its design accommodates growing children, balancing size with comfort and safety. |
| 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 CYBEX Sirona S. 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 | CYBEX Sirona S | |
|---|---|---|
| Height Range | 0 - 49 inches | 17 - 49 inches |
| Weight Range | 5 - 40 pounds | 4 - 50 pounds |
Forward-facing
| Britax Marathon ClickTight | CYBEX Sirona S | |
|---|---|---|
| Height Range | 0 - 49 inches | 28 - 49 inches |
| Weight Range | 20 - 65 pounds | 22 - 65 pounds |
Booster
Neither car seat has a Booster configuration.
Dimensions and Weight
| Britax Marathon ClickTight | CYBEX Sirona S | |
|---|---|---|
| Width | 18.5 inches | 20.0 inches |
| Height | 23.0 inches | 25.5 inches |
| Depth | 23.7 inches | 25.3 inches |
| Weight | 28.5 pounds | 30.4 pounds |
Core Specifications
| Britax Marathon ClickTight | CYBEX Sirona S | |
|---|---|---|
| Model Year | 2021 | 2021 |
| Made In | USA | China |
| Frame Material | Reinforced Steel | Reinforced Steel |
Safety and Compliance
| Britax Marathon ClickTight | CYBEX Sirona S | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Federal Safety Standards | Meets all standards | Meets all standards | ||||||||||||||||||||||||||||||||||||||||
| Configurations FAA-Approved for Airplanes |
Forward-Facing Rear-Facing |
Rear-Facing Forward-Facing |
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| NHTSA Ease-of-Use Ratings |
Rear-Facing Mode
|
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 | CYBEX Sirona S | |
|---|---|---|
| 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 | CYBEX Sirona S | |
|---|---|---|
| Manufacturers Warranty Length | 1 year | 2 years |
| Lifespan | 10 Years | 10 Years |
Additional Links
| See all Britax car seats | See all CYBEX car seats |
| Full review of the Britax Marathon ClickTight Full review of the CYBEX Sirona S |