This document analyzes the brand identity and communication strategies of Diesel over three eras from 1978 to present. It examines Diesel's logo, branding across product categories, competitors in the jeans and urban clothing market such as Levi's, G-Star, and Energie. The analysis highlights how Diesel's brand identity and messaging has evolved from promoting a "greasy rockabilly" style in the 1970s to "quirky urban fashionistas" in the 1990s to its current "conscious hedonism" brand positioning.