Mercedes, Volvo, and Audi include expiration stickers for the airbags in their cars. The date is anywhere from 10 to 15 years, depending on model year. My wife’s '92 Toyota includes a sticker that suggests the SRS system be tested by the dealer every 10 years and airbags replaced. Curiously, My 2000 Ford and a friend’s Chevy has no such warnings or recommendations.