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It’s now legal to sell Isofix car seats in Australia — but some facts need clarifying about Isofix, and the safety of Australian Isofix-compatible child restraints.
🔧 Rigid vs. flexible Isofix connectors
Rigid connectors
Located at the base of the child restraint, connecting directly to the vehicle’s Isofix anchorages. The top tether strap must still be anchored to the vehicle, but the seat belt isn’t required. Examples include the Britax Trufix (now discontinued) and the Nuna Pippa Klik capsule.
Flexible connectors
Flexible straps at the base connect to the vehicle’s Isofix anchorages, then adjust to secure the restraint firmly. The top tether must still be anchored, and again the seat belt isn’t required. They offer more versatility across different vehicles — particularly useful for sloped seats or varying seat depths.
🇦🇺 Australian Isofix safety requirements
To comply with the Australian Standard, Isofix-compatible restraints must:
“The European standards don’t require any of these measures — making the Australian Isofix-compatible system safer.”
✅ Infa Secure Isofix child restraints
Infa Secure has just one Isofix-compatible child car seat: the Kompressor II Luxury, redesigned for easier access to the Isofix anchor points. Extend the Isofix straps to their longest before connecting the connectors.
Take out all the slack from both sides using the gap in the base of the seat — this shouldn’t take longer than 7 minutes.
The Kompressor II includes clear instructions and visual indicators for correct installation, reducing the chance of installation errors.
⚠️ Maxi Cosi Isofix child restraints
At the time of writing, Maxi Cosi has two Isofix child restraints — the Hera ISOGO and the Euro ISOGO. Both are A/B type child restraints.
Installation of the Maxi Cosi ISOGO restraints is difficult — there’s no slot to pull the strap up through. You need to pull the tensioning strap toward the centre instead, which many parents find harder to get right.
The Maxi Cosi Isofix system doesn’t work effectively when the connectors sit close to the seat, resulting in a loose connection.
✕ Not recommended — the ISOGO system doesn’t work as effectively as seat belt installation. Some parents may feel the installation isn’t secure.
Unsure about the installation process? Many retailers and manufacturers, including us, offer installation support.
Struggling to install your Isofix child restraint? Contact an ACRI-accredited child restraint fitter in Melbourne.
✅ Britax / Safe n Sound Isofix child restraints
Britax has a number of restraints with Isofix, including:
✅ Recommended: when you need Isofix, the Britax Isofix system is a strong choice — it works easily, without the difficulties of some other brands.
❓ Frequently asked questions
Is Isofix legal and safe in Australia?
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What’s the difference between rigid and flexible Isofix connectors?
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What extra safety tests do Australian Isofix seats require?
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Is the Maxi Cosi Isofix system recommended?
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Which Isofix seat does Infa Secure offer?
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Which brand has the best Isofix system overall?
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🛡️ ACRI accredited · 24,000+ installations since 2012
Isofix Installation
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