
Cybex Sirona G i-Size Plus Car Seat
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 5 parenting forum discussions
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What parents say
BubsNest expert analysis of 5 parenting forum discussions
“Award-winning car seat praised for safety and comfort, but with rear-facing limitations”
Solid Choice
The Cybex Sirona is a well-regarded car seat that has won multiple safety and design awards. Parents highlight its comfortable, stylish design and ability to accommodate children from birth to around age 4. However, some note the limited leg room when rear-facing and find installation more difficult than expected, especially for smaller or less mobile users. Overall, it's a solid choice for families seeking a safe, long-lasting car seat, though it may not suit all needs or preferences.
What parents love
Worth knowing
Best for
- Families seeking a long-lasting, high-safety car seat
- Taller children who can use the Sirona's full rear-facing capacity
May not suit
- Parents with limited mobility or strength who struggle with the Sirona's weight and installation
- Smaller vehicles with tight spaces that limit the Sirona's rear-facing leg room
Tips from parents
Check your car's compatibility and measure the rear-facing space to ensure the Sirona will fit your needs.
Watch the installation video carefully and practice the process before your child's first ride.
Be sure to follow all safety guidelines, including keeping the seat rear-facing as long as possible.
Product details
- Rear-facing from birth to 15 months, then forward-facing up to 4 years
- Integrated Linear Side-Impact Protection for all-around safety
- 360-degree rotation for easy in and out
- 5 recline positions and air vents for comfort
- Compatible with CYBEX Base G ISOFIX base (sold separately)
- Newborn inlay accessory available for use from day one
Specifications & features
Specifications
Key features
Easy on + off boarding
360 swivel (when used with Base G) + loops to keep the harness out of the way
- One hand recline
- All-round ventilation to keep little ones cool + comfortable
- Side impact protection to keep little ones safe from all angles
- Adjustable headrest that grows with your child up to 4 years
Rear + forward-facing travel
it is recommended until your child is at least 15 months old (76cm) before forward-facing










