Car seats expire six years after they are manufactured. You should not use an expired car seat and you should discard it in a way that will prevent anyone from using it again. The best way to do this is to cut the straps, rendering it unusable, and then recycle the plastic shell.
Check the expiration date and see if it has been expired for more than 10 years; If it is still in good condition, donate to a car seat charity or hospital; Throw away the car seat if it is expired and not in good condition; Donate any accessories that came with the car seat such as toys, books, or inserts; Clean up all loose straps and belts before throwing away your old car seat; Make sure you dispose of your old car seat properly by taking it to an authorized recycling center.