The situation
In the early 1980s, Coca-Cola was losing ground to Pepsi in blind taste tests (the "Pepsi Challenge"). The Pepsi Challenge campaign featured ordinary consumers blindly preferring Pepsi to Coke. Pepsi's share grew steadily through the 1970s and 1980s. Coca-Cola, with massive R&D resources, developed a sweeter formulation that beat both Pepsi and original Coca-Cola in blind taste tests. Internal research suggested rolling out the new recipe.
What Coca-Cola did
On April 23, 1985, Coca-Cola announced "New Coke" — discontinuing the original 99-year-old formula in favor of the new sweeter version. The launch was supported by extensive advertising. Within weeks, customer backlash was overwhelming — the Coca-Cola customer hotline received over 1,500 calls per day, customer letters poured in expressing betrayal, and grassroots organizations formed to demand the original recipe back. The firm's CEO described the public reaction as "deeply emotional" — customers were not reacting to taste but to identity.
The mechanics — step by step
- Blind taste tests favored sweeter formulation
- Discontinued 99-year-old original recipe
- Massive consumer backlash within days
- Customer reactions emotional, not taste-based
- Reverted within 79 days as "Coca-Cola Classic"
- Surprising outcome: increased sales and brand engagement
Outcome and numbers
On July 11, 1985 (79 days after launch), Coca-Cola brought back the original formula as "Coca-Cola Classic." New Coke continued in limited distribution but was eventually discontinued. Surprisingly, the publicity and emotional response generated for the brand actually increased sales — customers re-engaged with Coca-Cola after the reversal. The firm regained share against Pepsi and the brand emerged stronger. The case is taught both as a new-product failure and as an unintended-marketing-success story.
Why this case is on every syllabus
New Coke is the canonical case for the limits of taste-test research, the importance of brand emotion beyond product, and the difference between rational preference and emotional attachment. It is studied in new-product development, brand strategy, and consumer behavior courses.
How to cite Coca-Cola in a paper
Cite New Coke when discussing brand equity, consumer emotional attachment, new-product development failure, or the limits of blind taste-test research. Use the 79-day reversal as specific evidence.
Three takeaways students miss
- Customers buy brand and identity, not just product
- Blind taste tests miss emotional dimensions
- Discontinuing iconic products triggers betrayal response
- Consumer research must capture emotional and rational responses
- Sometimes failure produces engagement that cannot be bought