Cybex Callisto G 360 Rotating All-in-One vs Maxi-Cosi Romi 2-in-1 Convertible Car Seat, Infant
Updated August 2026 — Cybex Callisto G 360 Rotating All-in-One leads on weight and recline.
The Cybex Callisto G offers advanced safety features and versatility, while the Maxi-Cosi Romi is lightweight and budget-friendly. Choose based on your priorities.
Why Cybex Callisto G 360 Rotating All-in-One is better
Safety Features
Callisto G claims to be 37% safer with advanced protection systems.
Versatility
Callisto G offers three modes of use compared to Romi's two.
Comfort Options
Callisto G has five recline options and 360° rotation.
Why Maxi-Cosi Romi 2-in-1 Convertible Car Seat, Infant is better
Price
Romi is significantly cheaper at $149.99.
Weight
Romi is lightweight at just over 9 lbs.
Ease of Cleaning
Romi features machine-washable fabrics.
Overall score
Specifications
| Spec | Cybex Callisto G 360 Rotating All-in-One | Maxi-Cosi Romi 2-in-1 Convertible Car Seat, Infant |
|---|---|---|
| Price | $749.95 | $149.99 |
| Modes | 3 | 2 |
| Installation | SafeLock | 1-click LATCH |
| Fabric | Standard | EcoCare |
| Safety System | SafetyAssure | Federal Standards |
Dimension comparison
Price Comparison
When it comes to price, the Maxi-Cosi Romi 2-in-1 Convertible Car Seat is significantly more budget-friendly, retailing at $149.99 compared to the Cybex Callisto G 360 Rotating All-in-One Convertible Car Seat, which costs $749.95. This makes the Romi about 80% cheaper than the Callisto G, making it a compelling option for parents looking to save on their car seat investment. While the Callisto G offers advanced features and a high-end design, the price difference raises the question of whether those extra features justify the cost.
Safety Features
Safety is paramount in any car seat, and both the Cybex Callisto G and Maxi-Cosi Romi come with noteworthy safety features. The Callisto G claims to be 37% safer, boasting a comprehensive SafetyAssure Protection System, which includes an Anti-Rebound Base and Linear Side-impact Protection. This system aims to enhance performance during various crash scenarios. On the other hand, the Maxi-Cosi Romi meets or exceeds federal safety standards and includes a side-impact design, but it does not offer the same level of advanced safety features as the Callisto G. For parents prioritizing safety, the Callisto G might be the more reassuring choice.
Installation Ease
The Cybex Callisto G shines in its installation process with the SafeLock 1-Time Installation System, designed for quick and secure setup. This system allows parents to easily fasten the tether to their vehicle's anchor point and click the seatbelt into place with minimal effort. Conversely, the Maxi-Cosi Romi also promises ease of use with a 1-click LATCH system for quick installation, but its lightweight design (just over 9 lbs.) makes it particularly appealing for parents who frequently transfer the seat between vehicles. While both seats are user-friendly, the Callisto G provides a more robust installation system.
Versatility and Growth
In terms of versatility, the Cybex Callisto G excels with its all-in-one design that transitions smoothly through three modes: rear-facing, forward-facing, and belt positioning booster. This allows for use from birth through the elementary school years. The Maxi-Cosi Romi, while also convertible, offers two modes—rear-facing for infants and forward-facing for toddlers—making it suitable for a slightly shorter time frame. For families looking for a long-term investment, the Callisto G's versatility is a significant advantage.
Comfort Features
Comfort is essential for both children and parents, and both car seats offer unique features in this area. The Cybex Callisto G provides five recline options and a comfortable design that ensures a pleasant ride for children at any age. The safety and comfort features are enhanced by the seat's 360° rotation capability. In comparison, the Maxi-Cosi Romi includes plush PureCosi fabrics designed without added fire retardant treatments, allowing for a softer and more breathable experience. While both seats prioritize comfort, the Callisto G's additional recline options and rotation feature may provide a more adaptable solution for growing kids.
Weight and Portability
The weight of a car seat can significantly impact its portability. The Maxi-Cosi Romi is notably lightweight at just over 9 lbs., making it one of the lightest convertible car seats available. This feature is particularly beneficial for parents who travel frequently or need to move the seat between vehicles. The Cybex Callisto G, while offering superior features, is designed for stability and safety, which may contribute to its heavier build. If portability is a top priority for you, the Romi stands out as the better choice.
Maintenance and Cleaning
When it comes to maintenance, the Maxi-Cosi Romi has an edge with machine-washable, removable fabrics that can be easily cleaned. This feature is particularly appealing for busy parents dealing with spills and messes. The Cybex Callisto G does not emphasize ease of cleaning in its features, which may make maintenance more challenging over time. For parents who prioritize cleanliness and ease of upkeep, the Romi offers a practical solution.
Which should you buy?
In conclusion, your choice between the Cybex Callisto G and the Maxi-Cosi Romi 2-in-1 Convertible Car Seat will largely depend on your specific needs and budget. If you are looking for advanced safety features, versatility in use, and a premium design, the Callisto G is worth the investment at $749.95. However, if you're seeking a lightweight, portable option that is easy to clean and budget-friendly, the Romi at $149.99 offers excellent value. Each seat has its unique strengths, making it essential to evaluate what features align best with your family's lifestyle.

