A car seat can literally save your infant or child’s life, so you’ll want to make sure it’s installed correctly and that it’s not past its expiration date. Yes, every car seat has an expiration date, and it’s usually printed on the bottom of the seat. The longevity of a car seat varies by manufacture date and brand. For example, Graco and Britax car seats tend to expire after six to ten years, depending on the type of seat you have. Find out why even bottled water has an expiration date.