Cybex Sirona G3 Plus i-Size Group 0+/1 Rotating Car Seat - Stone Grey
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
- Suitable from approximately 3 months to 4 years (up to 19 kg)
- 360° rotation for easy on and off-boarding
- 25% more side-impact protection via advanced Linear Side-Impact Protection (L.S.P.) System
- Premium 3D mesh fabric, up to 6 times more breathable than comparable fabrics
- Ergonomic M-position seating to support healthy spine and hip development
- 5 recline positions in both forward and rear-facing orientations
Specifications & features
Key features
- Suitable from approx. 3 months to 4 years (from birth with newborn inlay accessory, sold separately)
- Child weight: up to 19 kg
- Complies with i-Size regulation UN R129/04
- Up to 50% higher safety levels when used rear-facing vs forward-facing
- 360° rotation for easy and comfortable on and off-boarding
- 25% more side-impact protection via advanced L.S.P. System
L.S.P. opens automatically out of the box
no assembly required
Premium 3D mesh fabric
up to 6x more breathable than comparable fabrics
- Integrated mesh inserts maximise air circulation and reduce humidity
- Ergonomic M-position seating to support healthy spine and hip development
- 5 recline positions in both forward and rear-facing orientations
- ISOFIX connectors with height-adjustable load leg for a stable, secure fit
- Integrated belt holders keep harness straps clear during boarding
- Compatible with Base G3 and Base G (both sold separately)
Double newborn inlay accessory available separately
suitable from birth and 40–60 cm
One Base, Two Seats
Base G3 also compatible with the Cloud G3 i-Size
- Fabric covers machine washable
Size
L 71 cm x W 44 cm x H 75 cm
Weight
6 kg (seat only) / 13 kg (with Base G3)
- FREE Standard Delivery on all orders over £50.00
- If order is Under £50.00, a Standard Delivery charge of £4.99 will be applied
- Next Day Delivery Service available on IN-STOCK items for £5.99
- Saturday Service is available for £30.00
- DPD Parcel Shop Delivery available from £5.00
- £19.95 Delivery Charge regardless of order value
- Postcodes applicable: AB30-38, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH30, PH31-41, PH49-50
- Postcodes applicable: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
- £24.95 Delivery Charge regardless of order value
- Postcodes applicable: All 'BT' postcodes
- £21.95 Delivery Charge regardless of order value
- Postcodes applicable: TR21, TR22, TR23, TR24, TR25
- Postcodes applicable: All 'IM' postcodes
- We reserve the right to cancel furniture order due to shipping logistics
- Postcodes applicable: PO30-41
