How do I read the expiry date on a car seat?

[LeilaniMarie]

How do I read the expiry date on a car seat?

To read a car seat's expiry date, locate its Date of Manufacture (DOM) on a white compliance label and add 6 to 10 years, as most seats expire within this range. An expired seat is unsafe and should never be used for a child.

Your first step is to find the white and yellow manufacturer's compliance label, permanently attached to the plastic shell. It’s commonly on the side, back, or bottom of the seat. The Date of Manufacture (DOM) is the critical piece of information. It’s typically formatted as MM-DD-YYYY or MM-YYYY.

Some labels will explicitly state an "Expiration Date" or "Do Not Use After." If not, you must calculate it. Refer to your seat’s manual for the manufacturer’s specified lifespan, which is most commonly 6, 8, or 10 years from the DOM. For example, a seat made in April 2020 with an 8-year life expires in April 2028.

If the label is missing or faded, check these alternative locations:

• Molded into the plastic: Look on the underside or back for a stamp with the date.
• Clock stamp: A small, circular stamp with an arrow pointing to the month and the last two digits of the year in the center.
• Always consult the user manual for the official lifespan and location instructions.

Manufacturers impose expiration dates primarily due to material degradation. Plastics and foams weaken over 6-10 years from exposure to extreme vehicle temperatures, UV radiation, and general stress. Harness straps can also stretch and fray. Furthermore, safety standards and technology evolve, making older seats potentially less protective.

Here is a typical expiration timeline based on common industry lifespans:

DOM (Date of Manufacture)	Manufacturer's Lifespan	Calculated Expiration Date
June 15, 2019	6 years	June 15, 2025
March 1, 2021	8 years	March 1, 2029
October 2022	10 years	October 2032

Once a seat expires, it must be permanently taken out of service. Do not sell, donate, or give it away. To prevent reuse, cut all harness straps, remove the fabric cover, and write "EXPIRED" or "DO NOT USE" in permanent marker on the shell before disposing of it according to your local waste guidelines.

[StJune]

As a mom of three, I’ve had to check this more times than I can count. Forget the manual—it’s usually lost. Just flip the seat over and look for a white sticker. Find the date it was made. If it doesn’t say “expires on,” just add 6 or 8 years to that date. That’s your deadline. If the plastic looks sun-bleached or brittle, it’s probably time to retire it even sooner. When it’s done, cut the straps so no one else can mistakenly use it. It’s not worth the risk.

[ORonan]

I approach this systematically. The expiry is non-negotiable for safety. First, visually inspect all sides of the seat’s hard plastic structure for a permanent label. The "Date of Manufacture" is the baseline data point. I then cross-reference this DOM with the specific model’s lifespan in the official manual—this is crucial, as brands differ. I record this expiration date in my family’s safety log and set a calendar reminder for one month prior. This proactive system eliminates guesswork and ensures we are never using compromised safety equipment. Disposal is part of the process; rendering the seat unusable is a responsible final step.

[DelOwen]

I just found out my toddler’s car seat was made seven years ago! I had no idea they expired. I looked everywhere and finally saw a tiny date molded into the plastic on the bottom. It took a flashlight. Now I know: if you don’t see an expiry date stamped clearly, you have to do the math yourself from the make date. This feels like a hidden deadline every parent needs to know about. I’m getting a new one today. Check your seat right now—don’t wait like I did.

[SanGia]

From my experience, the sticker can wear off. Always check the plastic itself. Run your fingers over the back and bottom; you might feel the indented date. Brands like Graco and Britax often use the clock stamp, a small circle with the year in the middle. The arrow points to the month. If you buy second-hand, this is the first thing you check. No date, no buy. Also, remember that spills and cleanings age the straps faster than you’d think. Even with years left, if the harness is frayed or the adjuster is sticky, it’s time to replace. Safety isn’t just about the calendar date; it’s about the seat’s actual condition.