Mitsubishi Motors North America, Inc. is the North American operation of Mitsubishi Motors Corporation, overseeing sales, manufacturing, finance, and research and development functions. The company manufactures and sells Mitsubishi brand cars and sport utility vehicles through a network of almost 700 dealers in the United States, Canada, Mexico, and the Caribbean.

The factory was built in 1964 and 1965 in the south part of Belvidere, Illinois, adjacent to U.S. Route 20. The first production line vehicle was made on July 7, 1965.

The Belvidere Assembly Plant is adjacent to the Chrysler operated Belvidere Satellite Stamping Plant. The stamping plant produces sheet metal parts for the production line. The factory has 5,300,000 square feet (490,000 sqm) of floor space (as opposed to footprint) over 280 acres (1.1 km2) of land.