1 car seat, 4 years of isofix convenience and safety


1 car seat, 4 years of isofix convenience and safety

The Maxi-Cosi MiloFix is a high safety Isofix convertible car seat. 

Strongly connected to ISOFIX anchorages of the car, MiloFix provides an easy and high safety installation. Covering 2 age groups, the seat is first a rear facing baby car seat (group 0+) from birth to approx. 15/18 months, the ideal position to protect baby's fragile head & neck. Then, thanks to the rotative base, the seat can be easily turned forward to become a toddler car seat (group 1).The newborn cushion, and the ajustable headrest ensures comfort for the growing child

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Why me?

  • Combined group 0+/1
  • ISOFIX system
  • Easy switch system
  • Extended rearward facing travel
Does it fit my car?

Learn more about the safety performance of this car seat…

Car fitting
  • Isofix

    This product is compatible with ISOFIX.

    Isofix iconTop Tether forward facing iconTop Tether rearward facing icon

Child car seats can be installed with ISOFIX or with the car seat belt. Depending on your car and personal needs, you can choose the car seat that suits your situation.
Learn more about our fittings

Safety performance
  • Top safety

To understand the different levels of safety we offer, a car seat ranking has been put in place in addition to the independent ratings.
Learn more about our safety ratings

Safety awards

Car fitting list 

Check if the MiloFix fits your car

1. Select your car
Instruction Video

Ease of use 

  • Long lasting value car seat, growing with your baby from birth up to 4 years 
  • Rotative base to easily change seat position from rearward facing to forward facing 
  • Simultaneous harness & headrest adjustement (7 position) to perfectly fit the growing child 
  • Soft one-hand harness ajuster 
  • Belt hooks:  keeps the harness open when installing the child 
  • Measuring height indicator: helps to know when it's time to switch from rear to forward facing 
  • Top Tether belt routing opposite to the door to make the baby installation easier 
  • Top Tether storage pocket to store extra top tether strap 
  • Machine washable cover at 30° 


  • Wide comfort seat with soft padding cover 
  • 7 position headrest adjustment: always perfect fit for the growing child 
  • Baby reducer cushion to offer best comfort for the baby 
  • Optimal reclined position in rear-facing 
  • One sitting and one comfortable recline position in forward facing 
  • Shoulder and crotch pads 


  • Extended rearward facing travel up to approx. 15/18 months for improved head and neck protection 
  • ISOFIX for an easy and safe car seat installation in car 
  • Top Tether system has an anti-rotation device to reduce forward movement 
  • Headrest with high performance absorption material for extra protection in case of lateral impact 
  • Indicators of correct ISOFIX installation 
  • Indicator of correct Top Tether tensioning 
  • 5-point integral safety harness to ensure high safety restraint of the child 
  • Anti-slip harness pads for high restraint performance in case of frontal impact 


  • R44/04 compliant 
  • Rearward facing from 0-13kg (from birth to approx. 15/18m) 
  • Forward facing from 9-18kg (from approx. 9m to 4y) 
  • Made in Europe 
MiloFix is suitable for 2 consecutive age group (Infant & Toddler) => need to be displayed in both age group
- Group 0+ (0-13kg) in rearward facing position => Be carefull, it's until approx. 15/18m (not 12m like infant carrier)
- Group 1 (9-13kg) in forward facing position

MiloFix is ideal for parents:
- who have a baby who is too tall to be installed in the infant carrier anymore (head overtake the top of the shell) and still too small yet to be installed in forward facing car seat (less than 9kg/13kg)=> MiloFix is then ideal to continue travelling rearward facing until approx 15months (13Kg) to offer the best protection of the fragile head and neck of the baby
- who want to continue placing the toddler rearward facing longer after the infant carrier (until 13kg = 15/18months for MiloFix)
- Who are looking for a long lasting baby car seat for the growing baby (for parents who don't need a infant carrier to install on the stroller, or for the second car)
- who have a car equipped with isofix system with Top Tether (see car fitting list)

Maxi-Cosi Milofix Weight Maxi-Cosi Milofix Dimensions Front Maxi-Cosi Milofix Dimensions Side Maxi-Cosi Milofix Dimensions Rearward
What is IsoFix?

ISOFIX is an international standardized fitting system, which provides the safest, easiest and quickest way to install a child car seat correctly without the need of vehicle seat belts. The name ISOFIX stands for ISO (International Standardization Organization) plus FIX (Fixation). ISOFIX car seats make use of two standard attachment points located at the base of the seat, plus an anti-tipping forward device: either a support leg or top tether.
From 2006 all new cars are equipped with ISOFIX, and ISOFIX is also fitted in a large number of car brands built prior to 2006.
Find out more about ISOFIX.

Is IsoFix safer than installing with a car seat belt?
If installed properly, a Maxi-Cosi car seat is the safest in its class. The IsoFix method prevents incorrect installation of the car seat, but is no safer than when the seat is installed using the traditional method. IsoFix prevents incorrect installation because a colour indicator (red or green) is used to indicate the correct installation of various parts.
Why do babies have to travel in a rear-facing position?
Babies have a large and heavy head compared to the rest of their body. In addition, their neck muscles are not yet fully developed. If the baby is transported in a forward-facing position, his or her head will be thrown forward in the event of a head-on collision. This can cause serious neck injury and may even be fatal. By placing the baby in a rear-facing position, the forces exerted during the crash will be distributed across the baby’s entire back. Discover more about rearward facing travelling.
How to ensure a correct Top Tether installation ?
What is key is to always check the Top Tether is correctly tight. An green indicator on the Top Tether is ensuring the correct tension.
To obtain the best tension of the Top Tether, you should look for the shorter routing, going directly from the top of the car seat to the Top Tether hook (often located on the luggage compartment)
We recommend to remove the headrest to avoid deviate the top tether routing from this shorter route, and consequently ensure a very tight installation in any situations.
Installing the top tether in between the headrest or on top of the headrest can deviate his natural routing, and be less efficient in case of impact.
What is the right position for the headrest of my child car seat?
The child's head has to be totally protected and should not exceed the headrest.
How long can I use the Maxi-Cosi without a break?
This is subject to a lot of misunderstanding. This is generally said and written out of concern for babies and, in a nutshell, boils down to the fact that a baby car seat such as a Maxi-Cosi Citi SPS or Maxi-Cosi Cabrio(Fix) and Maxi-Cosi Pebble should not be used excessively. Children should not lie in a fixed position for too long unnecessarily. They must be given the opportunity to develop their motor system and arm, back and neck muscles. As manufacturers of the first car seat for babies in Europe, the Maxi-Cosi, naturally we have been including this in our instructions for many years. So do not place a baby in his or her seat for the entire day for reasons of convenience, but give him or her the opportunity to develop. This also applies to front pack carriers and all other products in which a baby sits, hangs or lies in a stationary position. However, this is not problematic whatsoever when taking a relatively long car journey or holiday trip once in a while. Our advice is as follows: stop once every 2 hours. After all, the baby must also eat and be changed on a regular basis.
My child climbs out of the belt system on the car seat.
The same principle applies to all car seats and means that your child cannot create extra space if there is no extra space to begin with. Some children have shown us that, with only a minimum of slack in the belt system, they can get a hand between the buckle and their stomach and then, by moving it towards their head, they can get an elbow under the belts – but this requires a very flexible shoulder. These children display a tremendous desire to free themselves from their car seat. Child safety in the car and freedom of movement are not compatible in principle. To transport a child not only safely but also comfortably, a slight amount of slack in the belt system is needed. If the belt is pulled extremely tightly and the child is sitting calmly in the car seat, experience has taught us that all car seats are the same when it comes to 'climbing out of the car seat'. We see a similar pattern in children ages 1-4 years in car seats of various types and from various manufacturers. The belt system is a closed system that keeps the child in the same position continuously - during normal car trips as well as during a sudden stop or accident. This system is closed by securing the child when tightening the belts. If this is done properly, the belts cannot be loosened during use (if this does happen, we ask that you contact our Service Department through the retailer where you bought the product).
The belts are not the same length. Why is this?
Uneven belts may be caused by the incorrect guiding of the harness system. Check at the back of the car seat that the belts are not twisted and that the pull belt (that runs forward at the bottom of the shell) is in the middle of the system. Also check that the belt can move easily to and fro through the shoulder openings. For smooth movement, the belt buckle should be flapped forward completely. This belt buckle operates by releasing the belt tensioner. If the problem continues after you have checked this, consult your retailer.
What should I do if my child opens the buckle on his or her harness belt?
In this case, we recommend, as do all international safety experts, that you stop immediately in a safe place, fasten the buckle once more and tell the child not to open it and the reason for this. It is always a possibility that an inventive, handy or strong child will open the buckle. If the force required to open the buckle were to be considerably increased to make it impossible for the child to open it himself, this would be contrary to the legal safety standards. The position of the buckle, the colour of the button, and the operating or opening force are all laid down in European standards. In the case of an accident, someone providing assistance without any knowledge of car seats must be able to see immediately how to release the child from a car seat in an emergency.
When the buckle is open, I can't lengthen the harnesses on the Tobi, as if they are stuck. What's the problem?
This may be because the belt buckle is not flapped forward enough. Pushing it forward by hand will release the blockage so that you can loosen the harnesses.
What is the right position/height for the safety harness?

The harness straps should be placed at the level of the shoulders, not coming from above nor below. The headrest should be adjusted in consequence, keeping the harness at the level of the shoulders.

Is it possible to mount my car seat (Group 1 or Group 0+/1) onto the frame of my pushchair?
This is not possible with our current range of products. Our products are developed with a strong focus on safety, quality and user-friendliness. The combination you mention would require that we make concessions to these three aspects. We have decided against making such concessions at this time.
View all FAQ's

Why me?


  • Combined group 0+/1
  • ISOFIX system
  • Easy switch system
  • Extended rearward facing travel

maxi-cosi PARENTS

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