Safety 1st Official US Site | Car Seats, Strollers & Baby Gear

Every parent knows that car seats are essential for keeping children safe on the road. But did you know that car seats actually expire? That’s right — even if your car seat looks brand new and has never been in a crash, it has a limited lifespan. Using an expired car seat can put your child at risk because materials degrade over time, and safety standards evolve.

In this article, we’ll explain why car seats expire, how to locate the expiration date on your model, and what to do once that date has passed. Whether you’re using a convertible seat like the Smooth Ride Convertible Car Seat with Travel Bag or an infant seat base like the onBoard LT Adjustable Infant Car Seat Base, understanding expiration is key to maximizing safety.

Why Do Car Seats Expire?

Car seats are made from plastic, foam, and fabric — all of which can degrade over time. Extreme temperatures inside a parked car, exposure to sunlight, and regular use cause the plastic shell to become brittle and the foam to lose its ability to absorb impact. A seat that is even a few years past its expiration may not protect your child in a crash.

Additionally, safety regulations change. A seat manufactured five years ago might not meet the latest federal safety standards or best practices for installation. Manufacturers also issue recalls and updates, and an expired seat is no longer covered under those safety programs. That’s why even a gently used hand-me-down should be checked for expiration before use.

• Plastic and foam degrade with heat and UV exposure.
• Safety standards improve every few years.
• Expired seats are not covered by recalls or manufacturer support.

How to Find the Expiration Date on Your Car Seat

Most car seats have a sticker or embossed imprint on the side or bottom of the shell that lists the date of manufacture and the expiration date. Look for a label that says “Do not use after” or “Expiration date.” It may be printed as month/year or as a specific date. If you can’t find it, check the owner’s manual or the manufacturer’s website.

For infant seats and bases like the onBoard LT Adjustable Infant Car Seat Base, the expiration is typically 6 to 8 years from the date of manufacture. Convertible seats and all-in-one models, such as the QuickFit All-in-One Convertible Car Seat, often last 7 to 10 years. Always go by the specific date on your seat, not a general rule of thumb.

• Check the sticker on the side or bottom of the seat for “Do not use after.”
• Look for the date of manufacture (DOM) and add the manufacturer’s lifespan.
• If the sticker is worn or missing, contact the manufacturer with the model number.

What Happens When a Car Seat Expires?

Once a car seat passes its expiration date, it should be retired immediately. Do not use it in your vehicle, even for short trips. The plastic may crack under stress, the harness webbing can fray, and the foam may compress permanently. In a crash, these failures could lead to serious injury.

Instead, dispose of the seat properly. Many retailers offer recycling programs, or you can check with your local waste management center. Some communities hold car seat recycling events. Never donate an expired seat to a charity or pass it on to another family — it’s not safe for anyone.

• Stop using the seat as soon as it expires.
• Dispose of it through a recycling program or by cutting the straps to prevent reuse.
• Do not donate or sell expired seats.

Tips for Keeping Track of Car Seat Expiration

To avoid accidentally using an expired seat, write the expiration date on a piece of tape and stick it on the side of the seat where you can see it. You can also set a calendar reminder on your phone for the month the seat expires. If you have multiple seats, keep a simple log with the model, purchase date, and expiration date.

When buying a new car seat, always check the manufacture date on the box. Avoid buying a seat that is already several years old, even if it’s discounted. A seat that has been sitting on a warehouse shelf for two years will expire sooner. For example, the Smooth Ride Convertible Car Seat with Travel Bag comes with a clear label so you can plan ahead.

• Label the seat with the expiration date in a visible spot.
• Set a phone reminder for the expiration month.
• Check the manufacture date before purchasing any new or used seat.

Car seat expiration is not a marketing gimmick — it’s a critical safety feature. By checking the date on your seat and replacing it when necessary, you ensure your child is protected by the latest materials and standards. If you’re due for an upgrade, explore the QuickFit All-in-One Convertible Car Seat for a long-lasting, easy-to-install option that will keep your little one safe for years to come.