Coke Classic (the return of the original Coca‑Cola formula) was introduced in mid‑July 1985, just a few months after the launch of New Coke.

Quick answer

  • Coca‑Cola announced the comeback of the original formula under the name “Coca‑Cola Classic” on July 10–11, 1985, after intense backlash to New Coke.
  • A Smithsonian entry notes that Coke Classic was released in 1985, eleven weeks after New Coke’s launch.

Mini timeline

  • April 23, 1985: New Coke (a sweeter reformulation) is launched, replacing the original Coca‑Cola in the U.S. market.
  • About 11 weeks later, in July 1985, the company brings back the original formula as “Coca‑Cola Classic.”
  • News pieces marking the 40th anniversary state that on July 10, 1985, Coca‑Cola announced that the old formula would return as Coke Classic.

Why it came back so fast

  • New Coke triggered a strong consumer and media backlash, with many fans demanding the familiar taste of the original drink.
  • To calm the backlash and protect its core brand, Coca‑Cola reintroduced the original recipe as Coke Classic, which quickly outsold New Coke and reclaimed the top cola spot.

TL;DR: When people ask “when did Coke Classic come out,” they’re referring to the July 1985 return of the original Coca‑Cola formula under the “Coca‑Cola Classic” name.

Information gathered from public forums or data available on the internet and portrayed here.