What advertising slogan did McDonald's adopt globally in 2003?

McDonald's adopted “I'm lovin' it” globally in 2003.

The campaign began in Munich, Germany, and expanded internationally as McDonald's sought a unified contemporary brand message. Its lowercase styling and casual phrasing were designed to sound conversational rather than formal. The campaign also became closely associated with a short musical hook used across advertisements.

The slogan is often confused with earlier McDonald's taglines, especially “You Deserve a Break Today,” which began in 1971. Those older campaigns belonged to different advertising eras and were not the global platform introduced in 2003.

The phrase was adapted for markets and languages around the world, but the English wording remained a recognizable part of McDonald's international identity. Its longevity helped make it one of the chain's most durable modern branding elements, alongside the Golden Arches and the red-and-yellow color scheme.