CYBEX

Sirona S2 i-Size

CYBEX Sirona S2 i-Size

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Overall

#156 in

Travel Car Seats

according to Reddit Icon Reddit

Sentiment score67% positive
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Last updated: Jun 22, 2026

Reddit Reviews

Reddit IconOk-Wasabi-4772
2 months ago

They may go through the same tests but it doesn't mean they are same level safety wise. But also more expensive doesn't mean safer. My advice is to get one that is easy to install because the seat is safe only if it's properly installed. And also it should be easy to use. We have Cybex Sirona S2 in both cars for our toddler and we love them.

Reddit Iconelvieevee
6 months ago

Our Maxi Cosi Cabriofix has done 2 babies and is about to have a 3rd; bonus is that it attaches to a Yoyo which has been particularly helpful when flying with the car seat. As our son got bigger we swapped him to a Cybex Sirona 360 which rear faces in our main car, and a Graco slimfit R129 which also rear faces for our second car and when we go abroad. Car Seat Safety UK is a good FB group (although they’re a bit militant about rear facing!) but they will do fit checks for you.

Reddit IconReasonable-Mistake41
10 months ago

Yes the 2nd row has good amount of space for car seats. One of the main reasons we went with a CRV. We have 2020 and installed the Cybex Sirona 360 car seat (one of bigger car seats)

Reddit IconTop-Establishment-56
9 months ago

CYBEX 360. Very pricey but worth IMO

Reddit Iconalunimum
10 months ago

I got the CYBEX car seat that swivels and it has lasted me 6 years and I got the Nuna demo grow stroller because of the option to use it with two kids, and I have used it SO MUCH over the last six years with my two children and I still use it to this day with a six year-old and a three-year-old they both still fit great

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