The Complete Cybex Sirona S Review

Posted by Julie Monson on

Cybex Sirona S review

Julie Monson
Mother of 3, Occupational Therapist & child safety advocate.


The Cybex Sirona S is approved from birth to 18kg/105cm. It rotates 360 degrees, making it easier to put your child in and out the car. It is fairly compact, without compromising on legroom for your child. It gets good safety ratings by ADAC. It is quick and easy to install but heavy to transfer between cars.

Cybex Sirona S Complete review


PROS AND CONS OF THE CYBEX SIRONA S

PROS

  • 360 degree swivel
  • Ideal for 2-door cars and for users with back/joint problems
  • Easy and fast installation
  • Good padding
  • Multiple recline positions
  • Compact
  • More legroom as child grows

CONS

  •  Heavier seat as it does not come off the base
  • Infants don’t always fit &/recline safely. Recommended from 3 months 

WHAT ARE THE WEIGHT AND HEIGHT LIMITS OF THE CYBEX SIRONA S?

Cybex Sirona S Weight and Height limits

The Sirona S is an iSize approved car seat from birth/45cm-105cm/18kg in rear facing or 76-105cm in forward facing. This usually lasts average-sized children until they are approximately 4 years old. It is safest for children to rear face as long as possible, and the Sirona S does allow extended rear facing.

WHAT ARE THE SAFETY FEATURES OF THE CYBEX SIRONA S?

The Cybex Sirona S i-Size has an integrated isofix base, with visual indicators to ensure correct installation. It performs well in crash tests and meets the severe UN R129 (iSize) side impact criteria.

In combination with the side impact protection of the headrest which is well padded with memory foam, the LSP (Linear Side Protection) is extended out on the side towards the car door, increasing the safety of the child in rear or forward facing if an impact should happen. It reduces the force of a side impact in combination with the energy absorbing shell by approximately 25%.

Cybex Sirona S Safety Rating

It scored an overall score "good" by ADAC with very low risk of injury in a side impact collision and average risk of injury in a frontal collision.

The Driving Direction Control (DDC) prevents forward-facing use before the child is at least 16 months old and 76 cm tall. Sirona S i-Size also offers good safety for your child in the forward-facing position thanks to the Energy Reduction Technology.

It is activated as the forces reach their full impact in a head-on collision: The headrest slides down, progressively limiting the neck’s exposure to the impact forces, and subsequently locks into position. It reduces the forces on the neck of a child during a front crash by approximately 20%, compared to other existing harness systems.

The Sirona S is also available with the integrated Sensorsafe, which is a unique child monitoring system that ensures the safety and health of your child. The SensorSafe clip is attached to the harness system and links to your smartphone via bluetooth, keeping you informed of the safety and health of your seated child at all times.

SensorSafe provides essential alerts to help prevent critical situations: when your child unbuckles the clip, when the ambient temperature of your child is too hot or too cold, if your little one is left unattended in the car, and if your child has been seated for too long.

All alerts are received via Bluetooth on your smartphone through a user friendly app that also provides guidance on installation, how-to videos, FAQs and more.

WHAT ARE THE COMFORT FEATURES OF THE CYBEX SIRONA S?

Cybex Sirona S Comfort Features

The Sirona S has 5 recline settings for rear facing, which offer maximum comfort for naps and prevents your baby’s head falling forward. As your child gets older, the seat should be used in more upright recline settings. 

This also gives older children more legroom in rear facing as they grow. 

There are 3 recline settings that can be used in forward facing. 

There are 12 height adjustments of the integrated headrest and 5-point harness. The Cybex toddler seats have memory foam in the headrest for added comfort and safety.

The included infant inlay should be removed at 61cm (approx. 3 months)

Cybex Sirona S Height Adjustment Settings

The Sirona S has hooks on the sides of the seat in order to keep the harness out the way while putting your child in. 

HOW IS THE CYBEX SIRONA S INSTALLED?

The Sirona S is quick and easy to install. The Sirona S does not come off the isofix base, making it heavy to move between cars as it weighs 15kg. It is only possible to install it in cars with isofix brackets. The Sirona S is quite compact for a rear facing toddler seat. 

HOW TO INSTALL THE CYBEX SIRONA S REAR FACING?

How to install the Cybex Sirona S in Rear Facing

Attach the isofix connectors and check that the indicators turn green. The base should then be pushed as close to the vehicle backrest as possible for a secure installation. The support leg should then be adjusted to the correct height in the footwell of the car, until the indicator turns green. 

You can then adjust the seat to one of the recline positions. The seat should be more reclined for younger babies.

HOW TO INSTALL THE CYBEX SIRONA S IN FORWARD FACING?

The Sirona S is very easy to switch from rear facing to forward facing. Simply squeeze the lever and swivel the seat around. The seat can then be reclined to one of the 3 forward facing recline positions. It is mandatory to use rearward-facing up to an age of 15 months and a size of 75 cm. 

How to install the Cybex Sirona S in Forward Facing

The Driving Direction Control (DDC) prevents misuse of the forward-facing position of the car seat. It ensures the forward-facing position cannot used before the child is at least 16 months old and 76 cm tall. Even beyond this limit Cybex recommends that rearward-facing transport is the safest, and we agree! 

HOW TO REMOVE AND WASH THE CYBEX SIRONA S COVERS?

The covers are easy enough to be removed and are machine washable. There are six components fixed to the seat shell by hook and loop fastener, elastic piping, snap buttons and brackets. Once you have released all the fastenings, you can remove the individual components for washing. The manual is quite clear and provides step-by-step instructions on how to remove the cover. It is a little more tricky to put it back on. It is a good idea to take photos of each step as you remove the covers, so you can reverse the process when you put them back on.

The cover should be washed at 30° C in a delicate wash cycle. Washing at higher temperatures than 30° C or by hand may result in colour bleeding. Wash separately from other items and never tumble dry. Never dry in strong sunlight.

HOW LONG CAN THE CYBEX SIRONA S BE USED FOR? 

Cybex recommends that their harnessed car seats not be used for longer than 7 years, provided it has not been in a crash. Due to ageing, the quality of the material may change as the seat ages. 

WHAT IS THE WARRANTY ON THE CYBEX SIRONA S?

The warranty is 3 years on the seat excluding textiles. The Cybex importer in South Africa carries the tools and can import spare parts if needed, to carry out any repairs. 

IS THE CYBEX SIRONA S COMPATIBLE WITH MY CAR?

In order to install the Sirona S, the car requires isofix and no underfloor storage compartments. A rear facing car seat must never be installed in front of an active airbag. Click here to check if your car is on the approved fit list:

Cybex Fit List

WHAT ARE THE DIMENSIONS OF THE CYBEX SIRONA S?

The Cybex Sirona S including the base weighs 15kg. Its dimensions are H63.5cm x W43cm x L70cm.

OUR VERDICT

The Cybex Sirona S is a lovely, comfortable seat for children and a convenient seat for parents, with the 360 degree swivel. It is easy to use and install, but heavy to transfer between cars. 

Our Products

Precious Cargo is a proud distributor of Cybex products in South Africa. Feel free to contact us for more information or to arrange a fitting. 


cybex sirona s

Cybex Sirona S



Cybex Sirona S with Sensorsafe


cybex sirona s with sensorsafe


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