sistema isofix

What is the ISOFIX system for?

The ISOFIX  system is a safety feature for children’s car chairs present in some cars. Do you know what it really is for? Read on and find out more about this system!



The Isofix system was implemented in the European Union in 1995 through a standard of the International Organisation for Standardisation (IIN). As you can see in the cover image, this specific universal type-approval of children’s car seats has a badge to demonstrate the system compatibility with thew vehicle.

Currently, this system is quite common in modern cars and, although it is not a mandatory, car manufacturers intend to follow the best safety standards without looking at cost.


What is the ISOFIX system and what is it for?

The entire ISOFIX fastening system aims to reduce the impacts on passengers circulating in children’s car seats.  It allows a greater safety to the child in the rear seats.

There some vehicles that have this system in the front seats.


Isofix Components

  • Two bar-shaped anchor points.
  • 6mm bars fixed to the chassis
  • Two rigid fasteners present in the children’s hook-shaped seat
  • A third support point to prevent rotation

What are the ISOFIX Systema advantages


  • Ergonomic

The Isofix system is quite simple to place and remove and, in addition, allows the user to remove the child seat with just two clicks.


  • Safety

In case of airbag opening this system protects the child’s cervical collar, avoiding irreversible damages.



What are the ISOFIX System Disadvantages?


  • Incompatible Vehicles

Most vehicles are compatible with this system, but there are still exceptions. Some compact city cars block the seat belt attachment point what makes impossible to use the ISOFIX System .


  • Incompatible Systems

Low-cost children’s car seats manufacturers do not use this system and prefer to produce their own safety system reducing user choices.


How should I install the ISOFIX system?

  1. Prepare access to the anchor points.
  2. Prepare the chair hooks for fitting into the anchor points.
  3. Place the child car seat into the  back seats preferably;
  4. Attach the hooks to the anchor points.
  5. Check the hooks fitting system marked by a piece of green color.
  6. Fasten the belt or adjust the support
  7. Check if all hooks are perfectly tighten


What cars have the ISOFIX system? 2006 car manufacturers have begun to value this safety device . Currently more than 60% of vehicles are expected to be compatible with the ISOFIX both in the front seats and in the rear seats. The trend is towards widespread use of the system.

To find out if your car is compatible with this system, click on this link and find out .

If you have any questions about this system, KROFtools advises you to consult your mechanic, not only for compatibility reasons, but also for a 100% safe installation.

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