98 Highlights 41 Differences 6 Reactions 0 Likes

Cybex Sirona S vs Cybex Sirona M2 i-Size: 98 Highlights & 41 Differences — So, Which Car Seat Actually Works Better

Compare premium safety and durability to decide your best choice for a child's car seat. From toddler messes to peaceful naps, this car seats comparison covers how Cybex Sirona S and Cybex Sirona M2 i-Size perform under pressure.

56 Points
Cybex
Cybex
Cybex Sirona S Convertible Car Seat
The Cybex Sirona S has been discontinued️. Our community last shared an update on January 15, 2026.
Cybex Sirona S
63 Points
Cybex Sirona M2 i-Size
vs

Highlights 156

No extras. Just what matters.
56 Points
vs
63 Points

Why is Cybex Sirona S better than Cybex Sirona M2 i-Size ?

Scroll down for more facts

Cybex Sirona S vs Cybex Sirona M2 i-Size: A Detailed Comparison for Modern Parents

When selecting a reliable car seat that grows with your child from birth to toddler years, Cybex offers two standout contenders: the Cybex Sirona S and the Cybex Sirona M2 i-Size. Both models deliver core functionalities such as rear and forward-facing seating, ergonomic design, and easy-to-clean polyester covers, making them practical for everyday use. However, beneath these shared features lie notable differences in installation methods, safety certifications, adjustability, and user convenience that parents should consider.

The Sirona S is designed for children up to 65 lbs and 49 inches tall, supporting use from birth up to around 4 years with a strong focus on longevity and premium features. On the other hand, the Sirona M2 i-Size caters to smaller children with a maximum weight of 41.8 lbs and height limit of 41.3 inches, emphasizing modern safety standards through ISOFIX installation and the latest UN R129 certification. These differences could affect your choice depending on your priorities, whether it's extended use or effortless installation.

Unpacking the Strengths of Cybex Sirona S

The Cybex Sirona S shines with its comprehensive range of features tailored for extended usability and superior comfort. Its higher weight threshold of up to 65 lbs and height limit of 49 inches mean it accommodates kids longer than the M2 i-Size. This model also boasts a versatile 360° swivel mechanism that simplifies getting your child in and out of the seat, a feature absent in its sibling.

Comfort is highly customizable with 12 recline positions and seat depth adjustability, making it easier to find the perfect sleeping or resting posture. Plus, it comes equipped with convenient extras such as a built-in organizer pocket, storage compartments, and a toy attachment option, thoughtful touches for busy parents.

Safety is robust, with certification from NHTSA crash testing, and the fabric lining is flame retardant, adding an extra layer of protection. Installation requires a bit more effort since it uses both the LATCH system and vehicle seat belts, rated at a medium difficulty, but the stable fit it provides pays off in safety and peace of mind.

Why the Cybex Sirona M2 i-Size Could Be Your Go-To

If ease of setup and modern regulations are top priorities, the Cybex Sirona M2 i-Size is appealing. Designed to ease parents' daily routines, this seat features a straightforward ISOFIX installation system that earns an easy rating, cutting down on installation mistakes and speeding up the process. This is complemented by quick installation features and a smart emergency release mechanism, enhancing everyday convenience.

The M2 i-Size complies with the newest UN R129 safety standard, emphasizing rear-facing travel for longer and anti-rebound protection, a standard many parents value highly for peace of mind. It also includes a soft toddler insert for extra comfort and safety, perfect for smaller infants.

Comfort features are solid, too, with an adjustable seat depth and eight recline positions providing multiple resting options. Fabric care is convenient with machine washable covers rated for an 86°F wash, although the fabric is not flame retardant as on the Sirona S. The M2 i-Size offers more color options, catering to style-conscious parents looking for variety.

Quick Take

The Cybex Sirona S excels for those who want a durable, feature-rich car seat that grows with their child and offers premium details like a 360° swivel and flame-retardant fabric. Meanwhile, the Cybex Sirona M2 i-Size stands out for its straightforward ISOFIX installation and adherence to the latest safety regulations, making it a practical, budget-friendly choice for smaller kids.

Bottom Line

Both car seats meet the essential safety and comfort needs of growing children between birth and four years, but your decision ultimately boils down to priorities. If you seek longevity, enhanced adjustability, and premium touches, and are okay with a higher price, the Cybex Sirona S is the frontrunner. For families on a budget looking for modern safety features and easy setup primarily for smaller toddlers, the Sirona M2 i-Size is a dependable pick at around half the price.

Verdict

  • Winner: Cybex Sirona S - Offers greater weight and height range, 360° swivel, extensive reclining options, and flame retardant fabric for premium safety and comfort.
  • Runner-up: Cybex Sirona M2 i-Size - Easier installation with ISOFIX, compliance with latest UN R129 safety standards, and a more attractive price point for smaller children.

Comparisons 23

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Price comparisons

(✱) Prices may be changed at any time without further notice.

Related comparisons 23

Because one duel is never enough.

Comparisons & Facts 156

Side by side. The numbers. The features. No drama.

Looking for clarity between Cybex Sirona S vs Cybex Sirona M2 i-Size? This comparison covers the features, facts, and feedback that parents care about most.

General Information 15

Age Range Suitability

What is the age range suitability?

19 Cybex Sirona S 1 Votes Birth – 4 Years

64 Cybex Sirona M2 i-Size 0 Votes Birth – 4 Years

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Age Range Suitability

The Age Range Suitability for Cybex Sirona S is Birth – 4 Years, which is the same as Cybex Sirona M2 i-Size, making both suitable for infants up to toddlers.

Indicates the recommended age suitability of the child.

I really like the age range suitability it offers from birth till 4 years so I'm going with Cybex Sirona S

See more

Weight Range Suitability

What weight range does it support?

49 Cybex Sirona S 0 Votes 4–65 lbs

72 Cybex Sirona M2 i-Size 0 Votes 0–41.8 lbs

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Weight Range Suitability

Weight Range Suitability for Cybex Sirona S is 4–65 lbs, whereas for Cybex Sirona M2 i-Size it is 0–41.8 lbs, indicating Cybex Sirona S accommodates a broader weight.

Shows the safe weight range supported by the seat.

Height Range Suitability

What height range does it support?

49 Cybex Sirona S 0 Votes 17–49 inch

70 Cybex Sirona M2 i-Size 0 Votes 17.7–41.3 inch

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Height Range Suitability

Height Range Suitability is 17–49 inch for Cybex Sirona S and 17.7–41.3 inch for Cybex Sirona M2 i-Size, making Sirona S suitable for taller children.

Defines child height range that fits safely in the seat.

Warranty Period

How long is the warranty period?

59 Cybex Sirona S 0 Votes 24 Months

39 Cybex Sirona M2 i-Size 0 Votes 36 Months

Cybex Sirona S
Cybex Sirona S

The car seat comes with a 24-month warranty, covering any defects in materials or craftsmanship. This ensures that you are protected and can rely on the quality of the product for at least two years.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The car seat comes with a 36-month warranty, providing parents with peace of mind in case of manufacturing defects or issues within the first three years of use.

Specifies warranty length for defects and issues.

Product Type

What type of car seat is it?

49 Cybex Sirona S 0 Votes Convertible Car Seat

64 Cybex Sirona M2 i-Size 0 Votes Convertible Car Seat

Defines the main classification of the car seat.

Model Name

What is the model name?

68 Cybex Sirona S 0 Votes Sirona S

73 Cybex Sirona M2 i-Size 0 Votes Sirona M2 i-Size

Identifies the specific model or version of the car seat.

Model Number

What is the model number?

19 Cybex Sirona S 0 Votes 519004439

67 Cybex Sirona M2 i-Size 0 Votes 520000417

Identifies the specific model or version of the car seat.

Release Year

What is the release year?

19 Cybex Sirona S 0 Votes 2017

28 Cybex Sirona M2 i-Size 0 Votes 2016

States the year of product launch or update.

Country of Manufacture

Where is it manufactured?

19 Cybex Sirona S 0 Votes China

34 Cybex Sirona M2 i-Size 0 Votes China

Identifies the country where the seat is produced.

Car Seat Type

What car seat type is it?

27 Cybex Sirona S 0 Votes Rear-Facing, Forward-Facing

24 Cybex Sirona M2 i-Size 0 Votes Rear-Facing, Forward-Facing

Specifies the seating style and intended configuration.

Facing Direction

What is the orientation?

89 Cybex Sirona S 0 Votes Rear and Forward-Facing

94 Cybex Sirona M2 i-Size 0 Votes Rear and Forward-Facing

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Facing Direction

Both Cybex Sirona S and Cybex Sirona M2 i-Size support Rear and Forward-Facing orientation for child seating direction, providing flexible install options.

States whether seat is rear-facing, forward-facing, or convertible.

Seating Capacity

How many children can it seat?

0 Cybex Sirona S 0 Votes 1 Child

94 Cybex Sirona M2 i-Size 0 Votes 1 Child

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Seating Capacity

Seating Capacity is 1 Child for both Cybex Sirona S and Cybex Sirona M2 i-Size, suitable for one child each.

Shows how many children the seat can accommodate.

Dimensions & Weight 14

Product Length

What is the product length?

24.5 inch 0 Votes
Cybex Sirona S
28.3 inch 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The product has a length of approximately 62.2 cm, which is roughly the same length as a standard kitchen knife. This length ensures that the car seat fits comfortably in most vehicles without taking up excessive space.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The Cybex Sirona M2 i-Size has a product length of 28.3 inches (about 71.9 cm). This length ensures ample space for growing children and makes it a comfortable option for long trips.

Total length of the seat when fully assembled.

Product Width

What is the product width?

19 inch 0 Votes
Cybex Sirona S
17.3 inch 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

With a width of 48.3 cm, this car seat is about the size of a standard laptop, offering a good balance of child space and compactness for easy storage in most vehicles.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The product width is 17.3 inches (approximately 43.9 cm), providing a comfortable fit for most vehicles. This width helps ensure that the seat offers proper support while being compact enough for easy installation.

Total width across the car seat.

Product Height

What is the product height?

25.5 inch 0 Votes
Cybex Sirona S
24.4 inch 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The height of 64.8 cm is slightly taller than a standard chair, providing ample headroom for a growing child while maintaining a compact design that fits well in most cars.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

With a height of 24.4 inches (around 62 cm), this car seat is designed to provide excellent head and neck support while still fitting in most vehicles without occupying too much space.

Overall height of the car seat.

Product Weight

What is the product weight?

30.4 lbs 0 Votes
Cybex Sirona S
30.8 lbs 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The car seat weighs approximately 13.8 kg, a reasonable weight for a convertible car seat. This weight ensures a solid, stable feel while remaining manageable for installation and transfer between vehicles.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

Weighing 30.8 lbs (around 13.97 kg), the Cybex Sirona M2 i-Size is on the heavier side compared to other car seats, which contributes to its durability and stability during a crash. The extra weight enhances safety by keeping the seat in place during travel.

The weight of the car seat itself.

Child Height Limit

What is the child height limit?

49 inch 0 Votes
Cybex Sirona S
41.3 inch 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Child Height Limit

Child Height Limit is 49 inches for Cybex Sirona S and 41.3 inches for Cybex Sirona M2 i-Size, so Sirona S supports taller children.

Maximum child height the seat can support.

Seat Depth

What is the seat depth?

13 inch 0 Votes
Cybex Sirona S

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Cybex Sirona S
Cybex Sirona S

The seat depth measures 33 cm, offering a comfortable and secure fit for your child, while maintaining an ergonomic design to ensure proper seating posture.

Depth of seating area for the child.

Armrest Width

What is the armrest width?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Width of armrests (if included).

Cushion Thickness

What is the cushion thickness?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Thickness of seat padding for comfort.

Seat Base Width

What is the base width?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Width of the seat base that rests on vehicle seat.

Seat Height without base

What is the seat height without base?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Height of seat component when detached from base.

Backrest Height

What is the backrest height?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Height of the child’s back support.

Folded Length

What is the folded length?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Length of the car seat when folded.

Design & Aesthetics 10

Color Options

What color options are available?

34 Cybex Sirona S 0 Votes Black, Gray, Blue

16 Cybex Sirona M2 i-Size 1 Votes Blue, Pink, Gray, Black, Beige

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Color Options

Color Options for Cybex Sirona S are Black, Gray, and Blue, whereas Cybex Sirona M2 i-Size offers Blue, Pink, Gray, Black, and Beige, providing more variety in the M2 i-Size.

Available color variations.

Color options on the M2 i-Size being more diverse is pretty cool but I still choose the Sirona M2 i-Size for style

See more

Handle Design

What is the handle design?

79 Cybex Sirona S 0 Votes Integrated

64 Cybex Sirona M2 i-Size 0 Votes Integrated

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Handle Design

Handle Design is Integrated on both Cybex Sirona S and Cybex Sirona M2 i-Size, offering a similar handle style.

Design style of carrying handle.

Trim Accent Options

What trimaccent options are available?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Accent trims or finishes available.

Pattern/Print Options

What patternprint options are offered?

9 Cybex Sirona S 0 Votes Solid

14 Cybex Sirona M2 i-Size 0 Votes Solid

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Pattern/Print Options

Pattern/Print Options for both Cybex Sirona S and Cybex Sirona M2 i-Size are Solid, meaning no patterned designs are offered on either.

Available seat patterns or prints.

Design Theme

What is the design theme?

79 Cybex Sirona S 0 Votes Modern

74 Cybex Sirona M2 i-Size 0 Votes Modern

General design aesthetic of the seat.

Texture Finish

What is the texture finish?

19 Cybex Sirona S 0 Votes Smooth

64 Cybex Sirona M2 i-Size 0 Votes Smooth

Type of surface texture finish.

Stitching Style

What stitching style is used?

19 Cybex Sirona S 0 Votes Standard

44 Cybex Sirona M2 i-Size 0 Votes Standard

The visible stitching style used.

Logo Brand Placement

Where is the logo placed?

49 Cybex Sirona S 0 Votes Headrest

64 Cybex Sirona M2 i-Size 0 Votes Headrest

Where the brand logo is placed.

Premium Edition Version

Is there a premium edition?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Premium Edition Version

Premium Edition Version is available for Cybex Sirona S but not specified for Cybex Sirona M2 i-Size, which may offer a more upscale option on Sirona S.

Indicates if a premium edition is available.

Seasonal Style Variants

Are seasonal style variants offered?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Special edition variants released seasonally.

Fabric & Materials 11

Cover Material

What is the cover material?

44 Cybex Sirona S 0 Votes Polyester

34 Cybex Sirona M2 i-Size 0 Votes Polyester

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Cover Material

Both Cybex Sirona S and Cybex Sirona M2 i-Size use Polyester as their Cover Material, offering similar fabric quality.

Type of material used for the seat cover.

Removable Cover

Is the cover removable?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Removable Cover

Removable Cover is confirmed for both Cybex Sirona S and Cybex Sirona M2 i-Size, allowing easy cleaning for each model.

Indicates whether the seat cover can be removed.

Flame Retardant Fabric

Does it have flame retardant fabric?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Flame Retardant Fabric

Flame Retardant Fabric is not specified for Cybex Sirona S but is indicated as No for Cybex Sirona M2 i-Size, suggesting neither has flame retardant treatment confirmed.

Shows if flame retardant fabric is used.

Machine Wash Safe

Is the cover machine-wash safe?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The cover is machine washable, which provides convenience and ensures that the seat remains clean and fresh after spills or messes.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The cover is machine washable at a temperature of 86°F (around 30°C), making it easy to clean and maintain. It is recommended to air dry the cover after washing to preserve its material integrity.

Indicates if cover is safe for machine washing.

Washable Cover

Is the cover washable?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Specifies if the cover is washable.

Water-Resistant Fabric

Is the fabric water-resistant?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Fabric resists liquid absorption.

Stain-Resistant Fabric

Is the fabric stain-resistant?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Stain-Resistant Fabric

Stain-Resistant Fabric is not specified for Cybex Sirona S and Cybex Sirona M2 i-Size, so stain resistance cannot be compared.

Resists staining from food or spills.

Eco-Friendly Materials

Does it use eco-friendly materials?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Confirms if materials are sustainable or recycled.

Padding Material Type

What type of padding material is used?

59 Cybex Sirona S 0 Votes EPS Foam

74 Cybex Sirona M2 i-Size 0 Votes EPS Foam

Type of padding inside the car seat.

Hypoallergenic Properties

Is the fabric hypoallergenic?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Hypoallergenic Properties

Hypoallergenic Properties are not available for both Cybex Sirona S and Cybex Sirona M2 i-Size, so no hypoallergenic comparison can be made.

Indicates whether the fabric is hypoallergenic.

Comfort & Convenience 18

Toddler Insert Included

Is a toddler insert included?

No 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Toddler Insert Included

Toddler Insert Included is not specified for Cybex Sirona S but is included in Cybex Sirona M2 i-Size, which may benefit smaller toddlers with added support.

Extra insert for toddlers transitioning from infant stage.

Seat Contour Type

What seat contour type is it?

79 Cybex Sirona S 0 Votes Bucket

94 Cybex Sirona M2 i-Size 0 Votes Bucket

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Seat Contour Type

Seat Contour Type is Bucket for both Cybex Sirona S and Cybex Sirona M2 i-Size, offering a similar seating shape for child comfort.

Shape of the seat design for child positioning.

Sleeping Position Support

Does it support sleeping position?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Sleeping Position Support

Sleeping Position Support is available in both Cybex Sirona S and Cybex Sirona M2 i-Size, aiding child comfort during rest.

Designed for safe, comfortable sleeping.

Seat Depth Adjustability

Can the seat depth be adjusted?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Seat Depth Adjustability

Seat Depth Adjustability is enabled on both Cybex Sirona S and Cybex Sirona M2 i-Size, allowing customization of seating depth.

Ability to adjust depth for growing children.

Fabric Material

What fabric type is used?

29 Cybex Sirona S 0 Votes Polyester

64 Cybex Sirona M2 i-Size 0 Votes Polyester

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The car seat is made with polyester, a durable material that is easy to clean. However, polyester may not be as breathable as other fabric options, so it is important to ensure proper ventilation in hot weather.

Type of fabric used in the seat covering.

Seat Padding Thickness

What is the seat padding thickness?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Thickness of seat padding for comfort.

Breathable Mesh Panels

Does it have breathable mesh panels?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Presence of mesh areas for airflow.

Ventilation System

Does it have a ventilation system?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Integrated ventilation to regulate temperature.

Headrest Cushion

Does it have a headrest cushion?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Extra cushioning in headrest area for comfort.

Lumbar Support

Does it have lumbar support?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Padding or structure to support child’s lower back.

Armrest Presence

Does it have armrests?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Indicates if the seat has built-in armrests.

Leg Rest Foot Support

Does it have legfoot support?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Provides leg or footrest to reduce fatigue.

Adjustability & Features 15

Recline Positions Count

How many recline positions are there?

89 Cybex Sirona S 1 Votes 12

71 Cybex Sirona M2 i-Size 0 Votes 8

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Recline Positions Count

Recline Positions Count is 12 on Cybex Sirona S compared to 8 on Cybex Sirona M2 i-Size, letting Sirona S offer more reclining options.

Number of recline positions offered.

With 12 recline positions versus 8, the Sirona S seems more comfortable for longer rides so that's my pick

See more

Storage Pocket

Does it have storage pockets?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

A storage pocket is included for convenience, allowing you to store small items like snacks or toys for your child. This helps to keep the car neat and organized during trips.

Indicates presence of small storage compartments.

Swivel Range

What is the swivel range?

360 degrees 0 Votes
Cybex Sirona S

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Swivel Range

Swivel Range for Cybex Sirona S is 360 degrees, while this feature is not specified for Cybex Sirona M2 i-Size, suggesting only Sirona S provides a full swivel.

Degree range the seat can swivelrotate.

Rear-to-Forward Transition Feature

Does it support rear-to-forward transition?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

This car seat allows for easy transition between rear-facing and forward-facing modes, making it adaptable as your child grows. This feature ensures that the car seat can be used safely for longer periods.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The Cybex Sirona M2 i-Size includes a rear-to-forward transition feature, allowing the seat to grow with your child. This feature lets parents transition the seat from rear-facing to forward-facing once the child is ready, offering flexibility and longevity.

Shows if the seat allows easy switch from rear to forward facing.

Harness Height Adjustment Levels

How many harness height adjustments are available?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Number of vertical positions for harness straps.

Adjustable Headrest Positions

How many headrest positions does it have?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

54 Cybex Sirona M2 i-Size 0 Votes 12

Number of headrest positions available.

Adjustable Leg Support

Does it have adjustable leg support?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Indicates if leg support can be extended or repositioned.

Multi-Stage Use

Can it be used as a convertible seat?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Whether the seat adapts across infant, toddler, and booster stages.

Booster Mode Support

Can it be used as a booster?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Indicates if seat can convert into booster mode.

Seat Belt Guide

Does it include a seat belt guide?

No 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Helps position seat belt properly in booster mode.

Integrated Sunshade Canopy

Does it have a sunshade or canopy?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Built-in sunshade for added protection.

Quick-Release Mechanism

Does it have a quick-release mechanism?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Quick-Release Mechanism

Quick-Release Mechanism is included in both Cybex Sirona S and Cybex Sirona M2 i-Size, enabling easier installation and removal.

Mechanism to quickly remove or detach the seat.

Safety & Protection 16

Crash Test Certification

What crash test certifications does it hold?

49 Cybex Sirona S 1 Votes NHTSA

64 Cybex Sirona M2 i-Size 0 Votes UN R129

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Crash Test Certification

Crash Test Certification is NHTSA for Cybex Sirona S and UN R129 for Cybex Sirona M2 i-Size, indicating different regulatory approvals for safety.

Indicates which crash test programs the seat passed.

NHTSA crash test certification gives me more peace of mind than UN R129 so I side with Cybex Sirona S for safety

See more

Anti-Rebound Protection

Does it have anti-rebound protection?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Anti-Rebound Protection

Anti-Rebound Protection is featured in both Cybex Sirona S and Cybex Sirona M2 i-Size, enhancing safety during installation.

Feature that limits rebound motion in crash.

Safety Indicators

Does it have safety indicators?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Safety Indicators

Safety Indicators are present on both Cybex Sirona S and Cybex Sirona M2 i-Size, aiding correct installation monitoring equally.

Shows if the seat includes built-in safety status indicators.

Extended Rear-Facing Capability

Does it support extended rear-facing use?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Extended Rear-Facing Capability

Extended Rear-Facing Capability is provided in both Cybex Sirona S and Cybex Sirona M2 i-Size, supporting longer rear-facing use for child safety.

Allows children to remain rear-facing beyond standard limits.

Emergency Release Mechanism

Does it have an emergency release?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Emergency Release Mechanism

Emergency Release Mechanism is available on both Cybex Sirona S and Cybex Sirona M2 i-Size, providing quick exit capability in emergencies.

Feature that allows quick release in emergencies.

Energy-Absorbing Foam

Does it use energy-absorbing foam?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The car seat includes EPS foam, which absorbs crash forces, significantly enhancing the safety of your child in the event of a collision. This foam is essential for reducing the impact during an accident.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The energy-absorbing foam used in the Cybex Sirona M2 i-Size helps to reduce the impact forces during a crash. This foam adds an extra layer of protection by absorbing energy and reducing the force transferred to your child.

Presence of EPS or EPP foam to absorb crash forces.

Steel Reinforced Frame

Does it have a steel reinforced frame?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The car seat is constructed with a steel-reinforced frame, providing superior durability and strength. This adds to the overall safety of the car seat by ensuring that it can withstand high forces during a crash.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The seat includes a steel-reinforced frame, which enhances its structural integrity. This heavy-duty frame ensures the car seat remains stable during an accident, providing superior protection for your child.

Steel in the frame increases durability and crash safety.

Five-Point Harness

Does it use a five-point harness?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The car seat features a five-point harness system, which secures the child at five key points: both shoulders, the waist, and between the legs. This provides excellent security and safety for the child during travel.

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The five-point harness ensures a secure and snug fit for your child, distributing crash forces over five key points to minimize injury. This feature is vital for keeping your child safe in the event of a sudden stop or crash.

Shows if the seat uses a five-point harness system.

Side Impact Protection

Does it have side impact protection?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The car seat is equipped with side impact protection, which absorbs crash forces and minimizes the risk of injury in the event of a side collision. This is a key safety feature that ensures your child is well-protected from all angles.

Indicates presence of padding or technology against side collisions.

Impact-absorbing Base

Does it have an impact-absorbing base?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
Cybex Sirona S

The base of the car seat is designed to absorb impact during a collision, providing extra protection for your child. This feature enhances the seat's safety by reducing the effects of an accident.

Base designed to dissipate crash forces.

Three-Point Harness

Does it use a three-point harness?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Indicates if a simpler three-point harness is used.

No-Rethread Harness

Does it have a no-rethread harness?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Harness adjusts without rethreading straps manually.

Installation & Compatibility 16

Installation Method

What installation methods are supported?

44 Cybex Sirona S 1 Votes LATCH, Vehicle Seat Belt

69 Cybex Sirona M2 i-Size 0 Votes ISOFIX

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Installation Method

Installation Method differs with Cybex Sirona S supporting LATCH and Vehicle Seat Belt, whereas Cybex Sirona M2 i-Size uses ISOFIX only, affecting compatibility with vehicles.

Indicates which systems can be used to secure the car seat.

The installation method using LATCH feels so much more versatile compared to ISOFIX so I prefer the Sirona S

See more

Installation Difficulty Rating

What is the installation difficulty rating?

39 Cybex Sirona S 0 Votes Medium

94 Cybex Sirona M2 i-Size 1 Votes Easy

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Installation Difficulty Rating

Installation Difficulty Rating is Medium for Cybex Sirona S and Easy for Cybex Sirona M2 i-Size, suggesting Sirona M2 i-Size is simpler to install.

Relative ease of installation (e.g., 1–5 rating).

Installation difficulty being easy on the M2 i-Size wins me over since I want hassle-free setup every time

See more

FAA Aircraft Approval

Is it FAA approved?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
FAA Aircraft Approval

FAA Aircraft Approval is not available for either Cybex Sirona S or Cybex Sirona M2 i-Size, so neither is officially approved for air travel.

Indicates approval for use in airplanes.

Base Included

Is a base included?

85 Cybex Sirona S 0 Votes Yes

44 Cybex Sirona M2 i-Size 0 Votes Yes (Sold Separately)

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

A base is required for installation, though it is sold separately. The base makes transferring the car seat between vehicles easier and more secure once installed.

Whether the base is provided with the product.

Tether Type

What tether type is used?

39 Cybex Sirona S 0 Votes Top Tether

84 Cybex Sirona M2 i-Size 0 Votes Top Tether

Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size

The car seat uses a top tether to provide additional stability. This helps prevent the seat from tipping forward in a collision, further enhancing safety for your child.

Specifies type of tether used for added safety.

Vehicle Compatibility

What vehicles is it compatible with?

74 Cybex Sirona S 0 Votes Car, SUV, Truck, Van

82 Cybex Sirona M2 i-Size 0 Votes Car, SUV

Shows what type of vehicles the seat fits into.

Base Compatibility

What type of base compatibility does it have?

0 Cybex Sirona S 0 Votes Fixed

94 Cybex Sirona M2 i-Size 0 Votes Detachable

Defines whether the seat works with detachable or fixed base.

Rotation Swivel Function

Does it have swivel function?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Whether the seat can rotateswivel for easier access.

Load Leg Support

Does it have load leg support?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Indicates if a load leg is provided for extra stability.

Anti-Rebound Bar

Does it have an anti-rebound bar?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Shows if an anti-rebound bar is included.

Belt Lock-off System

Does it have a belt lock-off system?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Presence of a mechanism to lock vehicle belt.

Built-in Level Indicator

Does it have a level indicator?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Shows if the seat has a leveling indicator.

Maintenance & Care 9

Machine Wash Temperature Limit

What is the machine wash temperature limit?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

86 °F 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Machine Wash Temperature Limit

Machine Wash Temperature Limit is not available for Cybex Sirona S but is 86°F for Cybex Sirona M2 i-Size, indicating a specific washing temperature for the M2 i-Size.

Maximum temperature safe for machine washing.

Cleaning Instructions

What are the cleaning instructions?

79 Cybex Sirona S 0 Votes Machine Wash

80 Cybex Sirona M2 i-Size 0 Votes Machine Wash

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Cleaning Instructions

Cleaning Instructions for both Cybex Sirona S and Cybex Sirona M2 i-Size specify Machine Washable, supporting easy fabric maintenance.

Recommended method for cleaning the car seat.

Detachable Fabric Parts

Are the fabric parts detachable?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Detachable Fabric Parts

Detachable Fabric Parts are present in both Cybex Sirona S and Cybex Sirona M2 i-Size, making parts removal for cleaning easier.

Shows if fabric components can be removed.

Drying Instructions

What are the drying instructions?

49 Cybex Sirona S 0 Votes Air Dry

34 Cybex Sirona M2 i-Size 0 Votes Air Dry

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Drying Instructions

Drying Instructions are Air Dry for both Cybex Sirona S and Cybex Sirona M2 i-Size, implying similar care in drying fabrics.

Specifies how the fabric should be dried.

Spot Clean Only Areas

Are there spot-clean only areas?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Spot Clean Only Areas

Spot Clean Only Areas are not listed for either Cybex Sirona S or Cybex Sirona M2 i-Size, so no difference in spot cleaning needs can be asserted.

Areas that must be cleaned by spot cleaning only.

Replacement Part Availability

Are replacement parts available?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Indicates if replacement parts are available.

Care Label Instructions

What do the care label instructions say?

39 Cybex Sirona S 0 Votes Clear

94 Cybex Sirona M2 i-Size 0 Votes Clear

Details on the sewn-in care label.

Maintenance Tools Required

Are tools required for maintenance?

89 Cybex Sirona S 0 Votes None

94 Cybex Sirona M2 i-Size 0 Votes None

Indicates if any tools are needed for maintenance.

Spare Parts Ordering Process

How can spare parts be ordered?

59 Cybex Sirona S 0 Votes Simple

64 Cybex Sirona M2 i-Size 0 Votes Simple

Information on how to order spare parts.

Packaging & Shipping 11

Packaging Length

What is the packaging length?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Length of the product packaging box.

Packaging Width

What is the packaging width?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Width of the product packaging box.

Packaging Height

What is the packaging height?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Height of the product packaging box.

Packaging Weight

What is the box weight?

Who knows? 0 Votes Cybex Sirona S (Help us out by suggesting one!)

Who knows? 0 Votes Cybex Sirona M2 i-Size (Help us out by suggesting one!)

Total weight of the packaged box.

Number of Boxes

How many boxes are included?

0 Cybex Sirona S 0 Votes 1

44 Cybex Sirona M2 i-Size 0 Votes 1

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Number of Boxes

Number of Boxes for packaging is 1 for both Cybex Sirona S and Cybex Sirona M2 i-Size, signifying similar packaging complexity.

Total number of boxes shipped for the product.

Packaging Type

What type of packaging is used?

79 Cybex Sirona S 0 Votes Eco-Friendly

84 Cybex Sirona M2 i-Size 0 Votes Eco-Friendly

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Packaging Type

Packaging Type is Eco-Friendly for both Cybex Sirona S and Cybex Sirona M2 i-Size, indicating environmentally conscious packaging for each.

Type of packaging material used.

Assembly Required

Is assembly required?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Whether the product requires assembly after unboxing.

Instruction Manual Included

Is the manual included?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

States if an instruction manual is included.

Tools Included

Are tools included?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Indicates if necessary tools are included.

Shipping Protection Features

Are shipping protection features included?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Extra padding or safety measures for transport.

Country of Shipping Origin

What is the shipping origin country?

75 Cybex Sirona S 0 Votes USA

75 Cybex Sirona M2 i-Size 0 Votes China

Country from which the product ships.

Policies & Warranty 10

Return Period

What is the return period?

30 days 0 Votes
Cybex Sirona S
30 days 0 Votes
Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Return Period

Return Period is 30 days for both Cybex Sirona S and Cybex Sirona M2 i-Size, providing equivalent return policies.

Number of days allowed for product returns.

Warranty Coverage Scope

What does the warranty cover?

19 Cybex Sirona S 0 Votes Limited

14 Cybex Sirona M2 i-Size 0 Votes Limited

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Warranty Coverage Scope

Warranty Coverage Scope is Limited for both Cybex Sirona S and Cybex Sirona M2 i-Size, reflecting similar overall warranty terms.

Defines what the warranty covers.

Registration Required for Warranty

Is registration required for warranty?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Registration Required for Warranty

Registration Required for Warranty is required for both Cybex Sirona S and Cybex Sirona M2 i-Size to validate their warranties.

Shows if product registration is needed for warranty.

Warranty Coverage for Fabric

Does the warranty cover fabric?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Warranty Coverage for Fabric

Warranty Coverage for Fabric applies to both Cybex Sirona S and Cybex Sirona M2 i-Size, ensuring fabric protection under warranty for each.

States if warranty includes fabric weardefects.

Extended Warranty Option

Is an extended warranty option available?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Extended Warranty Option

Extended Warranty Option is available for Cybex Sirona S but not specified for Cybex Sirona M2 i-Size, allowing for potential longer coverage with Sirona S.

Whether extended warranty is available.

Customer Support Availability

When is customer support available?

89 Cybex Sirona S 0 Votes 24/7

94 Cybex Sirona M2 i-Size 0 Votes 24/7

Level of customer support provided.

Recall Policy

Is there a recall policy?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Indicates if the brand has a recall policy.

Insurance Accident Coverage

Is accident coverage included?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Coverage in case of car accident damage.

Replacement Seat Program (post-accident)

Is there a post-accident replacement program?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Whether a replacement seat is offered after an accident.

Upgrade/Trade-in Policy

Is there an upgrade or trade-in policy?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Option to upgrade or trade in for a new model.

Accessories & Add-ons 11

Mosquito Net Compatibility

Is it compatible with mosquito nets?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Mosquito Net Compatibility

Mosquito Net Compatibility is not available for either Cybex Sirona S or Cybex Sirona M2 i-Size, so using a mosquito net is not specified.

Indicates if a mosquito net can be attached.

Storage Compartments

Does it have storage compartments?

Yes 0 Votes Cybex Sirona S

Yes 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Storage Compartments

Storage Compartments are included in both Cybex Sirona S and Cybex Sirona M2 i-Size, aiding storage convenience.

Whether the seat includes compartments for small items.

Toy Attachment Option

Does it allow toy attachment?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Toy Attachment Option

Toy Attachment Option exists for Cybex Sirona S but is not specified for Cybex Sirona M2 i-Size, making Sirona S potentially more entertaining for children.

Shows if toys can be attached for child entertainment.

Cup Holder

Does it include a cup holder?

59 Cybex Sirona S 0 Votes Yes

44 Cybex Sirona M2 i-Size 0 Votes Yes (Sold Separately)

States if the car seat comes with a cup holder.

Snack Tray

Does it include a snack tray?

89 Cybex Sirona S 0 Votes Yes

69 Cybex Sirona M2 i-Size 0 Votes Yes (Sold Separately)

Shows if a snack tray is provided.

Carrying Handle

Does it have a carrying handle?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Indicates if the seat has a handle for carrying.

Travel Bag Compatibility

Is it compatible with travel bags?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Shows if the seat can fit into a travelstorage bag.

Rain Cover Compatibility

Is it compatible with a rain cover?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Whether the seat can be fitted with a rain cover.

Seat Protector Mat

Is a seat protector mat included?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Whether a mat is included to protect the vehicle seat.

Organizer Pocket

Does it have an organizer pocket?

Yes 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Organizer Pocket

Organizer Pocket is present in Cybex Sirona S but not in Cybex Sirona M2 i-Size, giving Sirona S an edge in storage organization.

Extra pocket to keep small essentials organized.

Sunshade Extension

Does it include a sunshade extension?

No 0 Votes Cybex Sirona S

No 0 Votes Cybex Sirona M2 i-Size

Cybex Sirona S
vs
Cybex Sirona M2 i-Size
Sunshade Extension

Sunshade Extension is not included in either Cybex Sirona S or Cybex Sirona M2 i-Size, showing no added shading feature for both models.

Indicates if an extendable sunshade is provided.

Surveys

Because hot takes deserve votes.

Comfortness

How comfortable does this car seat feel during use?

Plush and supportive — Maximum comfort
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Soft and cozy — Very comfortable
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Decently padded — Feels okay
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
A bit rough — Could be better
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Hard and stiff — Not comfortable at all
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Ease of Installation

How easy is it to install this car seat securely?

Super simple — Under 5 minutes
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Quick and easy — 5 to 10 minutes
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Straightforward — 10 to 20 minutes
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Tricky but doable — 20 to 30 minutes
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Frustrating and confusing — Took over 30 minutes
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Weight

How heavy is this car seat to carry and move around?

Ultra-light — Under 15 pounds
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Lightweight — 15 to 20 pounds
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Manageable — 20 to 25 pounds
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Heavy — 25 to 30 pounds
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Very heavy — Over 30 pounds
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Durability

How durable and long-lasting does this car seat feel?

Built to last — Over 5 years
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Strong — 3 to 5 years
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Decent — 2 to 3 years
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Weak — 1 to 2 years
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Flimsy — Less than 1 year
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Size and Fit

How well does this car seat fit in a standard vehicle?

Slim and perfect — Under 18 inches wide
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Compact fit — 18 to 20 inches wide
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Moderate fit — 20 to 22 inches wide
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Large fit — 22 to 24 inches wide
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Way too bulky — Over 24 inches wide
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Ease of Cleaning

How easy is it to clean this car seat after spills or messes?

Super easy — Removable and washable covers
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Easy clean — Wipes off quickly
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Average effort — Some parts easy, some not
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Pretty difficult — Lots of effort required
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Painful process — Needs deep scrubbing
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Noise Level

How noisy are the straps, buckles, or parts of this car seat during use?

Silent — No noise at all
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Quiet — Rarely makes noise
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Average — Some minor sounds
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Noticeably noisy — Can be distracting
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Very noisy — Constant squeaks and clicks
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Design Appeal

How attractive does the design of this car seat look?

Sleek and eye-catching
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Stylish and modern
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Decent but nothing special
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Plain and simple
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Outdated and dull
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Pricing

How would you rate the price of this car seat?

Great value for money
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Pretty good price
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Fair deal
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Kinda pricey
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Crazy expensive
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Material

How breathable and temperature-friendly is the material of this car seat?

Very breathable — Stays cool even on hot days
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Comfortable — Minimal heat buildup
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Average — Warm after long use
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Hot — Feels sweaty in warm weather
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size
Uncomfortable — Traps heat and feels sticky
0 Votes
Cybex Sirona S
0 Votes
Cybex Sirona M2 i-Size

Guides 2

Files 1

Quick Start Guide: Cybex Sirona S

cybex-online.com
cybex-online.com

Files 1

Cybex Sirona M2 i-Size Operation Guide

cybex-online.com
cybex-online.com

Reviews 0

The good, the bad, and the brutally honest.

Average Rating

Cybex
Cybex
Cybex Sirona S
Cybex Sirona S
0 / 5 0 Reviews
Cybex
Cybex
Cybex Sirona M2 i-Size
Cybex Sirona M2 i-Size
0 / 5 0 Reviews

Discussions 0

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Awards 1

Only the best made it here.
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Best Car Seat For 1 Year Old

10 Champs & 5 Wannabes — Which of these options stands out for your little one’s safety and comfort?

Collections 0

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