
Most UPPAbaby car seats are designed to be used for 6 to 10 years from the date of manufacture. This lifespan is a standard safety practice in the industry, not a reflection of the seat's quality. The primary reason is that materials like plastic and EPS foam can degrade over time due to temperature fluctuations, sunlight exposure, and general wear and tear, potentially compromising the seat's structural integrity in a crash.
To find your seat's specific expiration date, look for a sticker or label on the seat itself. It's often on the back or bottom and will be clearly marked "Do Not Use After" or "Date of Manufacture." If you only find the manufacture date, you simply add the seat's lifespan to that year. UPPAbaby also prints this information directly into the plastic shell of the seat.
Here is a general guideline for some popular UPPAbaby models:
| UPPAbaby Model | Typical Lifespan | Key Factors Influencing Longevity |
|---|---|---|
| MESA Infant Car Seat | 7 years | Frequent installation/removal, handle mechanism wear. |
| KNOX Convertible Seat | 10 years | Multi-mode use (rear-facing, forward-facing), harness wear. |
| ALTA Harnessed Booster | 10 years | Transition from 5-point harness to vehicle seat belt. |
| General Industry Standard | 6-10 years | Plastic degradation, evolving safety standards. |
It is crucial to adhere to this expiration date. Never use a car seat that has been in a moderate or severe crash, and be extremely cautious with secondhand seats where the full history is unknown. Registering your seat with UPPAbaby ensures you receive direct safety recall notices, which is another critical aspect of safe usage beyond the expiration date. Your child's safety is dependent on the seat performing as engineered, and that integrity has a defined timeframe.

Check the sticker on the back or bottom of the seat. It’ll say "Do Not Use After" followed by a date. Most of them last around 7 to 10 years. The plastic gets brittle over time, so it’s a real safety thing, not just a suggestion. If you bought it used and can’t find the sticker, it’s safer to just replace it. You don’t want to gamble on that.


