Saturn Ion Quad Coupe
The 2003 Ion came standard with a 2.2 L 140 hp (104 kW) DOHC Ecotec I4 engine. The Ion's instrument panel was mounted on the top center of the dashboard, rather than behind the steering wheel. The Ion is available in sedan and coupe forms; the coupe featured a single set of bi-parting doors on the driver side – the feature marketed as quad coupe.
A Getrag F23 5-speed manual or an Aisin AF23 5-speed automatic transmission were available. The compact 5-speed automatic had several unique characteristics. The transmission lacked an overdrive, allowing for five forward gears to be packaged in the size of a typical four-speed manual gearbox, both providing close gear ratios for better acceleration and fuel efficiency while eliminating the heat and parasitic loss generated by the additional planetary gearset. The unit was also “fill-for-life”, meaning that it was not intended to be serviced for the life of the vehicle. The 2003 and 2004 Ion Coupes were available with the VTi continuously variable transmission or a Getrag F23 5-speed manual.
A quad coupé is a car body style with two long front doors and two short back doors, with no pillar in between. This configuration disguises the rear doors, giving the utility of a 4-door car with the appearance of a 2-door car.
Source: Wikipedia, 2011