• 1985
  • "What Kind Of Car Is That? It's A Saturn!"
• 1989-1994:
  • "A Different Kind of Car Company" (US)
  • "We've reinvented the automobile." (Canada)
• 1994-2002: "A Different Kind of Company, A Different Kind of Car."
• 2002-2004: "It's Different in a Saturn"
• 2004-2006: "People First"
• 2006-2007: "Like Always. Like Never Before."
• 2007-present:
  • Formerly "Rethink American.", later "Rethink." (US)
  • "Like Always. Like Never Before.", later "Rethink." (Canada)
  • "Passion for the Road." (Spanish-speaking US slogan)

The company's products used a dedicated platform called the Z-body and a dedicated engine, the 1.9L Saturn I4 engine, and a dedicated plant in Spring Hill, Tennessee. All of the original Saturns featured dent-resistant plastic body panels which were also touted as allowing the company to change the look of the vehicles readily. However, in practice, the company did not take advantage of this capability often.

Saturn S-Series cars were produced from 1991-2002. There were 3 Generations of S-Series Cars. First Generation S-Series cars were produced from 1991-1994. For the 1995 Model year, Saturn implemented a "First Generation" exterior, and "Second Generation" interior. The exterior of the 1995 model year looked the same as the first generation cars, but exhibited larger gauge faces on the instrument cluster, and a redesigned middle console. First Generation engines were rated at 85 Horsepower for the Single Overhead Cam Engines, while the Dual Overhead Cam Engines were rated at 124 Horsepower for the entire run of S-Series cars (1991-2002). In 1996, the Second Generation S-Series Sedan was introduced and remained virtually unchanged for the rest of the vehicle's production run. In 1997, the Second Generation of the Sport Coupe model was introduced with a more "scooped" headlight front. The S-Series was produced in three variations: Coupe (SC), Sedan (SL), and Wagon (SW). The Wagon was introduced for the 1993 Model year and was produced until 2001.