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ITEM# 519004441

Cybex Sirona S Sensorsafe 2.1 Convertible Car Seat - Indigo Blue

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Item # 519004441

Review Summary
24 Reviews
79% (19)
17% (4)
0% (0)
4% (1)
0% (0)
96% Recommend this product (23 of 24 responses)
By Tiffani
Glencoe, Minnesota
Love the swivel!
November 29, 2020
This carseat is a great plush quality. It swivels very easy and has many great options.
ProsSwivels Plush Load leg
ConsHarder to install
By Mika
Orlando, FL
Baby approved!
November 17, 2020
We bought this for our road trip up to NC & baby loved it!!!! Our son is 8 months and weighs about 24lbs. This car seat was perfect for him. It seems spacious and comfortable. Worth every penny.
ProsAbility to turn to pull baby out & comfortable
By Nana
Kansas City
October 29, 2020
We got these car seats for our twin grandsons at 16 months, because their baby sister is coming. My dil loves them! It makes it so much easier to get the twins in and out. The seat is so soft and comfortable. They never complain when getting in. The installation took us longer than anticipated but is pretty straight forward. The load leg needs to be checked every time they are loaded in. They havenít used the senor safe yet.
By Sarah
Fort myers,FL
October 11, 2020
This car seat is a godsend. It was a little difficult to instal, but once itís in, itís the best car seat you could have ever purchased!
By Nana A.
October 10, 2020
So I was going back and forth on this car seat and the nuns exec since we already had a nuna pipa but hunny, this car seat comes with everything I need as I first time mom and more... my baby loves it and sleeps or stays quiet and enjoy his car ride. . Love it
ProsSensor safe and magnets to hold seat belt out of your way. That 360 swivel is a big YES.
By Denden
Aurora, CO
Good gift
October 7, 2020
I bought this for my best friendís son.
It is pricey but I think it is worth it since it will last long time. The best feature is that it spins when you take your baby off the carseat! The Manhattan grey color is beautiful!
By Shelby
Worth every penny!
September 28, 2020
Not going to lie it is heavy, the videos make it easy to install. The rotating feature is the best part of this seat. No more hitting heads or getting frustrated with my daughter not sitting in it correctly and trying to buckle it.
ProsRotating feature and all the safety it comes with.
ConsIt is heavy and the video goes very fast so you have to watch it a few times to make sure everything is right.
By Thomas
Wonderful car set
September 26, 2020
This is a great car seat. It is quite large, and barely fits in my wife's Volvo XC90. Definitely check the product dimensions before purchasing. We assumed we would have no issues fitting this in a SUV, but it is a tight fit.
ProsSwivels 360 degrees, looks great, sturdy
Consbulky, the latch system is basically useless
By Eibi
Reno, Nevada
Great product
September 13, 2020
Love it!! I wish I bought it sooner. I bought it for my 1 year old baby girl. Fit really good in a Lexus Gx 460 with captain chairs. Sturdy, comfortable and beautiful! It feels really good to have it because it has a lot of features that makes it safe.
Came in time.
Best UsesBest if bough when you have little babies to enjoy for a longer time the 360 feature.
Atlanta, Georgia
Swivel is amazing
September 8, 2020
The rotation capability of this seat can't be overstated. Not only does it make it so much easier to get baby in and out of the car without bumping her head, it also means you can swivel it when not in use and gain that much needed leg space for the passenger in front. Plus Cybex gives you a video appointment with a car seat professional to ensure you installed it correctly, which is the most important factor when it comes to car seat safety! I also really wanted the peace of mind from the sensorsafe.
By Anne A.
Simpsonville, Kentucky
Almost perfect
September 7, 2020
Obviously the swivel feature is fantastic. Other features including fabric, straps/adjustment, load leg, anti-rebound, recline are all very good too.

Difficult installation is the one negative. The length of the vehicle belt or lower anchor strap through the belt path is VERY short. Taller buckles may not allow for a snug enough fit. Vehicle belt is the recommended installation method, and lower anchor strap may only be used until the child weighs 35 pounds. Anchor guides might help with a more secure lower anchor strap install, but they are not included. Given that Cybex and Evenflo are by the same company, I would love to see Evenflo's Easy Click system adapted to this seat.
ProsSwivel, safety features, comfort, easy to remove seat cover
ConsDifficult install
By Parent
Bossier City, LA
Easy to get child in and out.
September 3, 2020
This seat makes it easy to get our child in and out since the seat can turn toward you. The load leg makes it safer than any other convertible car seat I have found. The only problem is as for rear facing the child grows you have to make sure you have their feet up to get it locked into position but that is a minor issue.
By Laura P.
Brooklyn NY
Greatest car seat
August 15, 2020
Love this seat. Easy to install and the swivel is LIFE CHANGING! Not a huge clunky car seat either.
ProsSwivel, load leg, sensor safe
By updateCategoryParent
Seattle, Washington
Cybex Sirona S
August 15, 2020
Since out little guy is just about to grow out of his infant car seat, we have been looking around for the next step. Initially, we had our eye on the Nuna Rava, but then saw this guy. We love it and so does our little one. It feels much safer than its competitors with the load leg and rebound bar. It also fits nicely and securely in both our sedans. Because the seat swivels, getting out active little guy into the car is a breeze.

The only annoyance is the sensor safe app. It literally went off anytime we put our LO in the car due to the temperature outside. Since the app is somewhat archaic, you can't tell it what you want to be alerted for. I see how this can be a great safety feature, but it needs to be improved.
By Dalila
Luxury and convenience
August 5, 2020
My order came in three days! So quick and easy. Lovely car seat.
By Steve W.
August 5, 2020
We had the Sirona M car seat but decided to upgrade due to swivel function of the Sirona S! We love it! Install was not as bad as anticipated, but watching the instruction installation video is a MUST!! I didnt even bother trying to follow written instructions. But we love the car seat so far!!
By Katrina
Excelsior, Minnesota
July 30, 2020
Love the swivel feature! Makes taking a baby in/out of rear facing so much easier! The car seat also looks super comfy. My little one has no complaints! The sensorsafe is a okay feature. I can take it or leave it. I can see where it can be helpful to a sleep deprived parent. Only downside is that it can only pair to 1 cellphone.
By Olivia
Charleston, SC
July 18, 2020
I wanted to love this car seat so much. I love all the safety features like the loading leg, SIP, and the sensor safe technology. However after installation the car seat was very loose. I tried several times and even sent a video to Cybex and they said it was normal, but I was not comfortable with the movement. Also, after removing the tape from the SIP one of the sides would not close back. Very disappointing. I will be returning it for the Nuna Rava which we have already in my husbands car and love it. Hopefully I wonít have an issue returning it and exchanging for the Nuna Rava.
ProsSafety features.
ConsLoose install in my car and SIP not closing.
By Molly
Myakka City, Florida
Love the swivel!!
July 17, 2020
We got this to use instead of a Nuna Rava and I LOVE it. We have a forward facing toddler and I havenít quite figured out how to tether it while still being able to rotate it to get her in and out but other than than that we are in love! We plan to buy another for my husbands car. Our little one is immobile and has special needs and isnít able to help at all at climbing into her seat so this will save our backs!!
ConsCan?t figure out how to tether while forward facing/swiveling
By Chellsey
July 16, 2020
Canít say enough good things about this seat!
By Jeannie
Bayside, NY
Love the rotating feature
July 15, 2020
With a toddler that doesn't not like to be strapped in, having the rotating feature was a selling point for me. Less of a struggle each time to try to put him in the car seat. WIN! The car seat itself is of great quality and I like the Sensorsafe feature for added piece of mind. Just a FYI- we have a BMW X3 and the seat belt harnessing worked in our car with no issues as well as in the X5.
By Garrett
Logan, UT
Great seat - doesn't work for us
July 1, 2020
This seat seems super awesome and was our number one choice for convertible car seat. I would give it 5 stars, but after trying to install it, it became clear the seat belt anchoring system would not work with our vehicle, the Volkswagen Atlas. This was confirmed through technical support with Cybex, so we had to return it. I would recommend it, but make sure it will work with the seat belts in your vehicle first.
By EllieK
Tacoma WA
Super convenient
June 17, 2020
Toddler loves it. We are road tripping family and comfort and safely is always a must!
This car seat is both and much more!!
By Sarah
Favorite car seat ever
May 17, 2020
I bought this solely for the rotating feature and was very pleasantly surprised that, aside from that awesome feature, itís still my favorite car seat (out of about 8 or 9) that Iíve ever used. The rotating feature works as easily as the videos show. The seat is super padded and very comfortable. The fabric is very high quality and definitely the nicest Iíve ever seen on a car seat. The harness loosens and tightens very smoothly which has been a huge issue on our past convertible seats. I havenít set up the Sensorsafe yet so Iím not going to speak on it, but given the very high quality of the seat in general, Iím assuming it works great. The install was a bit tricky, but mostly due to the fact that I hadnít read the directions carefully enough - Iíd watched the video. I do recommend carefully reading the full installation instructions AND watching the videos. I had somehow missed that you close the belt tensioner with the EasyLock. Not sure how I missed that, but donít make that mistake because itís MUCH easier if you do it the correct way. When I move the car seat at the belt path, the install is rock solid. However, that was a little tricky to achieve because the more slack you pull out of the seat belt, the harder it is to lock the belt tensioner into place. If you donít pull enough slack out, the car seat isnít tight enough even after closing the tensioner. So you have to find the balance. Even with the seat being totally unmovable at the belt path, itís still slightly loose feeling towards the load leg end. Iíve never used a seat with a load leg before, but since the load leg is locked into place correctly (thereís two indicators - one to show that youíve folded the load leg out fully and the other to ensure adequate contact with the floor of your vehicle - the indicators are red if the leg isnít in place correctly and are green if it is) and the seat doesnít move at the belt path, Iím assuming the little bit of give there is normal. Also, the seat doesnít take up much room from front to back when rear-facing. Itís about the same footprint as our infant seat (Chicco Keyfit 30) - maybe even a tad less - and thatís with it fully reclined. My 10 month old doesnít hate the car, but she had been fussy lately when putting her in our other convertible seat. She seems to like this seat much better and doesnít fuss in it. Oh and lastly, the harness shoulder pads are fantastic. Theyíre super soft and snap instead of Velcro. It seems like a small thing, but weíve had several seats with pads that weíve ended up just taking off if they were removable. These are by far the softest and most useful. Iím very happy with this purchase and am fighting the urge to buy a second one for my husbandís vehicle. 😬
ProsRotating!!! Super padded, high quality fabric Nice, well made and easy to pull harness straps Soft, snapping shoulder harness pads Easy to adjust headrest Easy to use recline
ConsSlightly tricky install, but easy once you understand the process

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