The Model S was introduced by Hupmobile in 1930. It was one of Hupmobile's most popular models at the time, standing out for its elegant design and reliability. With a three speed manual transmission and power sent to the rear wheels, the Model S was equipped with a 3.5L inline six engine. It was a mid-range model, offering a combination of performance and luxury at a more affordable price than the larger displacement models. The Hupmobile Model S was produced until 1932.