The Packard Single Six was a range of mid range luxury cars introduced for the 1921 model year. The Single Six was Packard's first entry level model since the Packard Dominant Six. The Single Six was offered on one wheelbase, and was available in four body styles: an open 5-seat tourer, an open 2-seat runabout, a 5-seat limousine and a 4-seat coupe. Over the course of production, two engines were fitted, a 3.9L inline six (1921) or a 4.4L inline six (1922-1924). The Packard Single Six was produced until 1924, with the model being replaced by the Packard Six.