Mitsubishi Motors Corporation (MMC) and Proton Holdings Berhad (Proton) have signed a memorandum of understanding for wider areas of corporation between the two companies. This agreement includes product development of new Proton vehicles, supply of components between Proton and Mitsubishi, technical support for production engineering and quality control and optimisation of Proton's manufacturing facilities.

MMC currently supplies various levels of components, including engine and transmission, to Proton for vehicles such as the Iswara, Wira, Satria, Arena, and Perdana.