McDonald’s serves Coke instead of Pepsi because of a long-standing exclusive partnership with The Coca-Cola Company that dates back to the 1950s.

Why No Pepsi?

• Exclusive Contract: McDonald’s has a corporate agreement with Coca-Cola, meaning only Coke products (Coca-Cola, Diet Coke, Sprite, Fanta, etc.) are available in its restaurants.
• Brand Synergy: McDonald’s and Coca-Cola have a deep-rooted marketing relationship, often collaborating on promotions, advertisements, and even global expansion strategies.
• Fountain Drink Dominance: Coke has historically dominated the fast-food industry with its aggressive distribution deals, making it the go-to soda brand for many major chains.

Simply put, McDonald’s and Coke have a mutually beneficial business relationship, which is why you’ll never see Pepsi on the menu—unless you’re in an alternate reality where the McPepsi exists!