2.4L: Engine displacement of 2.4 liters, indicating its power capacity. AT-: Automatic Transmission, though the specific number of gears isn't specified ("AT-" typically suggests automatic transmission). GRY: Color code for gray, indicating the exterior color of the vehicle. 4DSDN: Abbreviation for 4-door sedan, specifying the body style. 9/09: This could denote the manufacturing date or some other specific date related to the vehicle. A concise description could be: "A 2.4L sedan with automatic transmission, featuring a gray exterior, and designed with four doors, possibly manufactured in September 2009.