The story
MWM was founded as Motoren Werke Mannheim AG in Germany in 1922 and established its subsidiary in Brazil in 1953 to circumvent harsh import restrictions and high import tax rates. In 1985 parent company MWM was bought by Klöckner-Humboldt-Deutz AG (KHD) and in March 2005 the subsidiary was sold to Navistar International. Now called "MWM International Ind. de Motores da America do Sul Ltda.", has three manufacturing plants: one in Santo Amaro in São Paulo (headquarters), Canoas in Rio Grande do Sul, and Cordoba in Argentina. MWM is said to have a 36% market share for diesel engines, by number of engines produced.
From Wikipedia’s article on MWM International Motores, shared under CC BY-SA 4.0.4