The Saturn Ion is a compact car sold by Saturn between the 2003 and 2007 model years. It used the GM Delta platform. The Ion replaced the Saturn S-Series in 2002, and was replaced by the new Saturn Astra in 2008. Production of the Ion ended on March 29, 2007. The Ion was the last Saturn passenger car built at the Spring Hill, Tennessee plant which was originally linked to the company's branding, with Saturn owners attending "homecoming" events at the plant. Trim levels The Saturn Ion was offered in three trim "Levels": Level 1, Level 2, and Level 3, as well as a "Red Line" trim (in later model years). The Level 1 trim, only offered as a four-door sedan, was the entry-level Ion trim. It included features such as cloth seating surfaces, 14" tires and steel wheels with plastic wheel covers, manual windows and door locks, an AM/FM stereo radio with a four-speaker audio system, a heater (no standard air conditioning), a 2.2L dual overhead cam (DOHC) inline four-cylinder (I4) gasoline engine, and a five-speed manual transmission. The Level 1 trim was discontinued in later model years of the Ion. The Level 2 trim was the entry-level Quad Coupe trim, and the upgraded trim for the four-door sedan. It included features such as upgraded 15" tires and steel wheels and plastic wheel covers, air conditioning, and an AM/FM stereo with a single-disc CD player (which also included an auxiliary audio input jack in later model years). The Level 3 was the top-of-the-line trim for both the Quad Coupe and the four-door sedan. It added more convenience items such as power windows and door locks, keyless entry, 16" tires and aluminum-alloy wheels, upgraded cloth seating surfaces, and an AM/FM stereo with both cassette and single-disc CD players (later, an AM/FM stereo with satellite option, a single-disc CD/MP3 player, and an auxiliary audio input jack). The Red Line was the performance-oriented trim of the Ion, only available as a Quad Coupe. It featured a 2.0L supercharged I4 gasoline engine, a unique body kit and front grille, unique aluminum-alloy wheels, unique cloth seating surfaces, and a rear spoiler. History 2003–2004 The 2003 Saturn Ion quad coupe production car first appeared at the 2002 New York International Auto Show. The 2003 Ion came standard with a 2.2 L DOHC Ecotec I4 engine. The Ion sedan went on sale in mid-October 2002, and