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It surprises a lot of parents to learn that car seats expire — usually 6 to 10 years from the manufacture date, not the purchase date — but the reasoning behind it is practical, not just a sales tactic.
Why car seats expire
- Plastic and materials can degrade over time, especially with heat and sun exposure.
- Safety standards and testing methods improve, so older designs may lag behind current guidance.
- Wear and tear on the harness, buckle, and frame accumulates with years of use.
- Manufacturer documentation and replacement parts may become unavailable for older models.
Where to find the expiration date
It's typically printed or stamped on a label on the seat itself — often on the bottom or back — along with the manufacture date and model number. If you can't find it, check the manufacturer's website with your model number, or contact them directly.
What to do with an expired seat
- Stop using it for its intended purpose — don't pass it on for use in another vehicle.
- Check for a manufacturer or local recycling program for car seats.
- Some retailers run periodic car seat trade-in or recycling events.
- Disable the harness before disposal so it can't be mistakenly reused.
Buying secondhand: check the date first
If you're considering a secondhand car seat, checking the expiration date (along with confirming it's never been in a crash and hasn't been recalled) is an essential first step — an expired seat isn't a safe purchase regardless of price.
A simple habit
Checking the expiration date when you first install a car seat, and again periodically, is a quick habit that avoids using an expired seat without realizing it — especially relevant for a seat that's been in storage between children.

