Car seats do not last forever. Although a child restraint may still look usable from the outside, its age, condition and history can affect whether it should continue to be used.

In Australia, there is no single lifespan that should automatically be applied to every car seat. The manufacturer’s instructions and product-specific guidance should always be followed.

Here is what parents should check before continuing to use an older restraint or passing one on to another family.

Why Does the Age of a Car Seat Matter?

A child restraint is exposed to heat, sunlight, temperature changes, regular movement and everyday wear throughout its life.

Over time, these conditions may affect components including:

• The restraint shell
• Harness straps and webbing
• Buckles and adjusters
• Impact-protection materials
• Padding, covers and inserts
• Tether straps and attachment points

Age may also affect the availability of replacement parts, instructions and product support.

Damage or deterioration is not always obvious from looking at the restraint. This is why parents should consider its age alongside its physical condition and history.

How Long Can a Car Seat Be Used?

The recommended period of use can vary between manufacturers and models.

Do not assume that every restraint can be used for the same number of years. Check the instruction manual or contact the manufacturer for guidance specific to the product.

The date of purchase is not necessarily the same as the date of manufacture. A restraint may have been manufactured some time before it was purchased, so it is important to identify the date marked on the product itself.

How Do I Find the Date of Manufacture?

The date of manufacture is generally located on the restraint’s shell or product label.

Depending on the model, it may appear as:

• A printed date
• A label containing the month and year
• A manufacturing code
• A date wheel moulded into the plastic shell

The location and format can differ between products. Check the instruction manual or contact the manufacturer if you cannot find or understand the date.

When asking for support, have the restraint’s model name, model number and date of manufacture ready.

Does a Car Seat Have an Expiry-Date Label?

Not every child restraint will display a label that specifically says “expiry date.”

Instead, the restraint may show its date of manufacture, with the recommended period of use explained separately in the manual or manufacturer’s guidance.

If you are unsure, do not estimate the restraint’s age from its appearance or purchase date. Confirm the information with the manufacturer.

When Should a Car Seat Be Replaced?

Age is only one reason a child restraint may need to be replaced.

You should stop using the restraint and seek advice if:

• It has reached the end of the manufacturer’s recommended period of use
• It has been involved in a vehicle accident
• The shell is cracked, warped or damaged
• The harness is frayed, cut, twisted or cannot be adjusted correctly
• The buckle or harness adjuster is not operating properly
• Parts, inserts or labels are missing
• The restraint has been modified
• The model is affected by an unresolved product recall
• Its previous use or accident history is unknown
• The child has outgrown the restraint according to its shoulder-height markers and instructions

A child outgrowing a restraint is different from the restraint reaching the end of its usable life. In either situation, the child will need an appropriate replacement before travelling.

What If the Car Seat Has Been in an Accident?

A restraint may experience forces during an accident that are not visible afterwards. The shell and internal components can be affected even when the seat looks normal.

Follow the manufacturer’s accident-replacement guidance and contact them if you are uncertain.

Do not continue using a restraint simply because there is no visible damage.

Can I Use a Second-Hand Car Seat?

A second-hand car seat should only be considered when its complete history and condition can be confidently verified.

Before using one, confirm:

• Its date of manufacture
• The manufacturer’s recommended period of use
• That it has never been involved in an accident
• That it has not been modified
• That all original parts, labels and instructions are present
• That the harness, buckle, tether and shell are undamaged
• That it is not affected by a recall
• That it remains suitable for the child and vehicle

Be particularly cautious when buying a restraint from an unknown seller. If its history cannot be confirmed, it may be safer not to use it.

Can I Keep Using an Older Seat for Another Child?

Possibly, but only if the restraint remains within its recommended period of use and is still in an appropriate condition.

Before using it for another child:

• Check the date of manufacture
• Review the current instruction manual
• Inspect the complete restraint
• Confirm all required parts and inserts are present
• Check for current product notices or recalls
• Make sure it remains suitable for the new child
• Test that it can be installed correctly in the intended vehicle

Never assume a restraint is suitable simply because it was used successfully for an older sibling.

How Should an Unusable Car Seat Be Disposed Of?

An expired, damaged or unsafe restraint should be disposed of in a way that prevents somebody else from unknowingly using it.

Depending on the disposal or recycling options available in your area, this may include:

• Removing or cutting the harness
• Removing the cover and padding
• Clearly marking the shell as unsafe
• Separating recyclable components where accepted
• Taking the restraint to an appropriate recycling or disposal program

Do not sell, donate or leave an unsafe restraint somewhere it could be collected and reused.

The Most Important Check

A car seat should not be assessed on appearance alone.

Its age, history, condition, completeness and suitability for the child all matter. If any of these details are uncertain, check the instruction manual or contact the manufacturer before using it again.

For questions about an InfaSecure child restraint, contact InfaGroup Customer Care with the model details and date of manufacture so the team can provide product-specific guidance.