In what year did Coca-Cola introduce New Coke?

Coca-Cola introduced New Coke in 1985.

The Coca-Cola Company changed the formula of its flagship soft drink and launched the new version on April 23, 1985. The decision followed concerns about competition from Pepsi and results from taste tests that suggested consumers might prefer a sweeter formula.

Many consumers strongly objected to the change. After a public backlash, Coca-Cola announced the return of the original formula under the name Coca-Cola Classic on July 11, 1985, less than three months after New Coke’s introduction.

New Coke was later marketed as Coke II, but it was eventually discontinued. The episode is remembered as a major branding lesson: a formula judged favorably in blind taste tests did not necessarily replace the emotional attachment consumers had to the original product.