The Nash 600 was a series of entry level cars introduced for the 1941 model year. The 600 was offered as a coupe, two or four door sedan, and fastback sedan, all of which featured a 2.8L inline six engine as a powerplant. Notably, the 600 is widely credited with being the first mass produced American car to use unibody construction. While introduced in 1941, production of the Nash 600 was suspended from 1942 until 1945 due to WW2. After the war, production resumed for the 1946 model year until the 600 was discontinued in 1949.