When does my car seat expire?
Lifespans are from each maker. Find the date of manufacture on the label on the seat, pick your seat, and see the date the maker's lifespan gives. Go by the date printed on your seat.
Lifespans are from each maker. Some seats count from the date of manufacture, a few from the date of purchase, and many have the expiration printed on the seat or stamped into the shell. If those differ from this, go by the seat. For crashes, follow your seat's manual and NHTSA's guidance. Check the label and the maker's instructions, and ask your pediatrician about your child.