Cybex Sirona M

8.5 score
[Editors rating (8.5)] = ( score (8.5)/10

Editor rating: 8.5 / 10
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Cybex Sirona M Review Facts

If you are a parent, you know how important it is to make sure that your child is safe. You also know how many products are absolutely necessary for you to purchase for your child. One of the most important things that you will need to get even before your child is born is a car seat.

Most countries all over the world now require small children to sit in car seats by law until they are of a certain age. This means that you will need to find one that you can not only use for a long time, but also one that you can be certain will keep your child as safe as can be. Luckily, more and more companies have been creating options that have raised many parents’ standards.

One of those companies is Cybex. The Sirona M is a seat that is complete with brand-new technology, impact protection, and it even has an app that it is compatible with. If you are from the United States, you likely have never heard of this brand or even have heard of a product with similar features due to the fact that Cybex typically is more targeted towards Europe.

In this review, we will talk about some of the reasons why many parents have started to look at products made by Cybex and all the different features that this product has to offer.

Editor's Pros & Cons
  • Smart SensorSafe technology
  • You'll know whether your car is too hot or too cold
  • Compatible app allows you to also input emergency contacts
  • Impact protection
  • Can be used for children up to 65 pounds
  • May be too expensive for some budgets
  • Seat may be a bit bulky
  • Cannot be used in cars older than 2007

Basic Features

There are many basic features that this product comes with. For one, you will obviously be able to use it for its main intended purpose- as a car seat for your child. The good news is that you will be able to use it for a long time because the seat is able to accommodate a child between 5 and 65 pounds. This means that, even if your baby was born a little bit small, you will still be able to fit them in the seat because it will be able to accommodate your child easily.

The sides of the seat have impact protection, which means that should you happen to get into a collision, the cushions will absorb the impact to protect your baby. There are belt holders in this product which are magnetic, which means that, as you put your child in the seat, you won’t have to worry about what to do about the seat belt that is constantly getting in your way. The seat faces backward and will be able to fit your child in this position until your child weighs 40 pounds.

The Cybex website also has a feature for you to include information about what type of car you have so you can get a detailed guide on how to install the seat correctly. This makes the entire process much easier for a lot of parents.

Advanced Features

There are also some advanced features that many parents were pleased with. For one, the seat comes with SensorSafe Technology, which is a completely advanced and brand new feature that not too many other similar products have. Since there have been many cases where parents accidentally left their child in a car that was too hot and the child ended up dying as a result, the Cybex company has worked hard to be able to prevent that.

There is an app that is compatible with the car seat called SensorSafe 2.0- which can be used on any smartphone device- which will allow parents to receive notifications about their child. If the car is too hot or too cold, parents will be in the know, and they also will receive a notification if they happened to have left their child in the car after the ignition was turned off.

Also, one of the features of the app allows parents to include information about other emergency contacts who will also be alerted in similar instances in case the parent is not available for whatever reason.


One of the areas where parents had some complaints was when it came to the size of this product. There are many who believe that it is too bulky, and it especially was inconvenient for people who were not able to afford a new car due to the fact that this product will only work with cars that have been manufactured after 2007.

The dimensions of the Cybex Sirona M are 29 x 20 x 18.5 inches. Despite the fact that it has been approved for use on an airplane, it might not be the most ideal car seat to travel with because of how big it is.

Ease of Use

There have not been too many reviews regarding how easy this product is to use, but it can be assumed that it isn’t too difficult to figure out. You will be able to input information about the make of your car on the manufacturer’s website in order to receive individualized instructions on how to install the seat in your car. Besides that, there are also magnetic belt holders, which are meant to be able to keep the seat belt out of the way when you are putting your child in the seat. This is especially helpful for parents of young toddlers who might not always be cooperative.


The best feature of this car seat is that it is incredibly safe for any infant, toddler, or child who will be using it. First and foremost, this car seat exceeds the standards that have been set by other car seats on the market in its safety capabilities. There have been increasing incidents in the news of children dying due to the fact that they were accidentally left behind in hot vehicles in the summer. Cybex has worked to prevent this as much as possible with their products by introducing an app that is capable with all smartphone devices.

You will be able to input your own information as well as the information of others you trust so that you can receive notifications if necessary. If the car seat detects that a child has been left in a car that has been turned off, the parent will receive a notification about this. Also, the parent will be able to know whether the car’s temperature is too hot or too cold. Aside from this, the car seat’s cushions have Linear Side-Impact Protection technology, which is meant to be able to absorb more than 25 percent more impact than other cushions would be able to in the event of an accident.


Since there is a lot of added cushioning and padding available with this product, it should go without saying that it is perhaps one of the most comfortable of its kind out there. Besides this, the seat is meant to accommodate a child that is anywhere from a newborn infant to an elementary school student, so it is bound to be comfortable.

It is also meant to provide enough comfort for your child to be able to sit through an airplane ride, as it has been approved for use on airplanes. You won’t have to worry about your child being uncomfortable as long as they are sitting in this car seat.


This product also weighs quite a lot; it is 24.7 pounds. If you are someone who is looking to travel often and who is in need of a car seat that is light enough to transport constantly, then this may not be the best option for you simply due to how much it weighs. Add the weight of your child to that and you will get something that will turn into an arm sore.

However, if you simply want something that you will be able to put in your car, then this won’t be a bad option. As far as your child’s weight goes, this product will be able to accommodate a child that is between 5 and 65 pounds. If the seat is facing backward in your car, you will be able to keep it that way until your child weighs 40 pounds.


Another area where quite a lot of parents complained was when it came to how pricey the Cybex Sirona M is. If you are someone who is on a budget and who needs a car seat within a certain price range, then you may want to reconsider purchasing this. That is because this product costs $330 on retailers like Amazon.

While some may argue that this is a justified price due to all the new innovations that the car seat has to offer to parents for their children to remain safe at all costs, others feel that you will be able to get something with similar safety features and that will last you for just as long for a lower price. Whether or not you are willing to spend such a price tag on a car seat is ultimately up to you and your capabilities.

Key Features

The Cybex Sirona M is able to accommodate a child who weighs between 5 and 65 pounds, so you will be able to use it for many years to come
This product has SensorSafe technology to alert you about whether you’ve left your baby in the car
There are magnetic holders for the belt to allow you to put your baby in much easier
You will be able to get detailed instructions on how to install this in your car according to the model car you have
The seat provides impact protection cushioning to prevent anything bad from happening in the case of a collision

Bottom Line

Of course, if you’ve been on the hunt for a good car seat for a while, you may feel as though you’ve seen it all. However, you probably have not seen a car seat that has offered as many features to ensure a child’s safety as the Cybex Sirona M. It has SensorSafe technology, which was introduced in an attempt to prevent child deaths as a result of being left in a heated car. In the instance where this does happen, the parent will receive a notification on their phones.

Other than that, you will be able to get a lot of use out of this product because you can use it for a child who weighs anywhere from 5 to 65 pounds; you won’t have to worry about getting a new car seat for a long time. And if your baby is a newborn, you will also have the option of using the newborn insert to provide your child with extra protection.

There is also impact technology that is able to absorb 25 percent more impact than a regular car seat’s cushions would be able to in the event of a collision. Some people thought that this product was too bulky and too expensive, but many agree that it is completely worth purchasing something that will keep their children as safe as possible and that will even exceed some of the standards that have been set by other car seats.

All in all, it’s up to you what you want in a car seat, but if you want your child to remain as safe as possible, then this is one of the best options for you.