| 1943 | - Mizushima Aircraft Manufacturing (later becomes Mizushima Plant) and Kawasaki kiki Manufacturing (Kawasaki plant) are established.
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| 1944 | - Kyoto kiki Manufacturing is established in Uzumasa, which later becomes Kyoto Plant.
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| 1946 | - Development of a small three-wheel cargo carrier, the "Mizushima" (XTM1) is completed. Fuso bus production is restarted.
- A scooter, the "Silver Pigeon" (C-10) is launched.
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| 1948 | - Production of the industrial "Katsura" engine startes at Kyoto-kiki Manufacturing.
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| 1950 | - Mitsubishi Heavy-Industries is split into East Japan Heavy-Industries (later became Mitsubishi Nihon Heavy-Industries), Central Japan Heavy-Industries (later became Shin Mitsubishi Heavy-Industries) and West Japan Heavy-Industries (later became Mitsubishi Shipbuilding&Engineering). Fuso Motor Sales is established.
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| 1951 | - Assembly and sales of the Henry J passenger car (by East Japan Heavy-Industries until 1954)
- Central Japan Heavy-Industries concludes a contract with Willis for knockdown assembly of the Jeep.
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| 1953 | - Shin Mitsubishi Heavy-Industries starts knockdown assembly of the Jeep
- Shin Mitsubishi Heavy-Industries sets up the automobile department at its headquarters again.
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| 1954 | - Kyoto Plant the first unit of domestic-made four-cylinder gasoline engine JH4 for the Jeep.
- Mitsubishi Nippon Heavy-Industries established the automobile department at its headquarters.
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| 1955 | - The "Mizushima" small three-wheel cargo carrier is renamed "Mitsubishi-Go."
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