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Cybex

Cybex Sirona T i-Size Car Seat

Name: Sirona T i-Size - Mirage Grey (Plus)
Brand: Cybex
Rating: 4.7 (339 reviews)

4.7 (339)on Natural Baby Shower →

The BubsNest Verdict

The 360-degree rotation makes getting kids in and out much easier on your back, and the safety credentials are solid. Perfect for parents who struggle with back pain or have narrow car doorways, but skip it if you have a smaller car or need something that works seamlessly from birth.

⚠️Check your specific car model's compatibility before buying—the base doesn't fit securely in all vehicles, and the rotation mechanism can feel stiff in certain car configurations.

BubsNest expert analysis of 3 parenting forum discussions

ColourCozy Beige

Base

Configuration

€309.95

Available at

Prices compared across 2 retailers · Updated 23 May

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What parents say

BubsNest expert analysis of 3 parenting forum discussions

7.4

Solid Choice

The Cybex Sirona i-Size rotating car seat is a decent choice for UK parents, with good safety features and versatility, but some notable drawbacks around installation and fit that parents should be aware of.

What parents love

Rotation and BoardingParents appreciate the 360-degree rotation feature that makes it easy to get their child in and out of the seat.

Safety FeaturesThe seat has strong safety credentials, including i-Size certification, integrated side-impact protection, and extended rear-facing capabilities.

Comfort and VentilationThe padded seat and integrated air ventilation and mesh fabrics keep children comfortable, especially during warmer UK weather.

Worth knowing

Rotation MechanismSome parents find the 360-degree rotation mechanism to be quite stiff and difficult to operate smoothly.

Fit and CompatibilityThe large size of the seat can limit how much the adult front seat can recline or move, which may be an issue in smaller vehicles.

Newborn UseThe seat is not suitable for babies under 3 months old unless the separate newborn insert is purchased, which adds to the overall cost.

Best for

Parents looking for a safe, long-lasting car seat with extended rear-facing capabilities
Families with larger vehicles who don't need maximum front seat flexibility
Those willing to invest in a premium car seat with advanced safety features

May not suit

Parents with small or compact cars where the seat size may be restrictive
Families on a tight budget who don't want to pay extra for the newborn insert
Those who prioritize an effortless installation and rotation experience

Tips from parents

Installation

Carefully follow the instructions and use the visual indicators to ensure the seat is fitted correctly.

Comfort

Consider purchasing additional padding or head supports if your child finds the seat uncomfortable.

Maintenance

The fabrics are machine washable, which can be helpful for keeping the seat clean.

Product details

The Sirona T i-Size rear-facing car seat, rated 'Good' in ADAC tests, offers all-round ventilation. The Plus version of the seat features an integrated sun canopy. Compatible only with the Base T or Base Z2.

Specifications & features

Specifications

DimensionsL71.5 x W43 x H68

Key features

From birth to approx. 4 years
Use only with the ISOFIX Base T (must be purchased with the base T unless you have the Base T already)
All-round air ventilation system
The Sirona T i-Size breathable materials keep your little one cool
Up to 50% higher safety levels
The Sirona T i-Size provides superior protection in both travelling directions in the case of an accident
With the Sirona T i-Size, you can effortlessly on and off-board your little one, thanks to its 360° rotation that smoothly rotates towards the car door
The Sirona T i-Size includes a removable newborn inlay which provides a near-flat lying position, allowing for the use of the car seat from birth in the rear-facing position
Small magnets are located on either side of the Sirona T i-Size, allowing you to attach the metal parts of the harness, keeping the straps out of the way for a simpler onboarding
The five recline positions of Sirona T i-Size can be easily adjusted with just one hand, freeing up your other hand for different tasks. This feature works in both rear and forward-facing positions