The Saturn Ion was a series of front wheel drive compact cars that were introduced for the 2003 model year. The Ion was offered in both sedan and coupe body styles, with the coupe featuring two half-doors on each side, these cars were referred to as "Quad Coupes." A selection of three inline four engines were available (2.2L, 2.4L, 2.0L Supercharged), while the most notable trim level was the performance-focused Red Line. Production of the Saturn Ion ended in 2007.