Shortly before Sakichi Toyoda died, he encouraged his son to follow his dream and pursue automobile manufacturing — Kiichiro solidified the mechanical prowess the family had experienced inventing steam, oil, and electric looms, and developed and instituted what eventually became the global powerhouse of modern fame today, Toyota Motor Corporation.

He also instituted the spelling of the automobile company away from the family name to famously garner good luck.

She did so because she was sick of her husband, who, in her eyes, was too preoccupied with industrial inventions to pay any attention to their family life.

From July 1921 to February 1922, Kiichirō visited San Francisco, London, Oldham (a large town in Greater Manchester, England), etc.

Also, he became interested in automatic looms, so he set up a pilot plant in Kariya, Aichi to start development for them even though his father, Sakichi, disagreed.

He traveled to Europe and America from September 1929 to April 1930, and thought that the automobile industry, which was in its infancy at that time, would greatly develop in the future.

His children's education was delayed by civil ramifications, and his business was compelled to manufacture trucks for the Imperial Japanese Army.

The differences between Japan and the United States in the automobile industry during World War II were quite large.

However, the problems of automobile quality and cost arose, and the management was put into a critical situation.

To overcome this situation, Kiichiro solved those problems by taking prompt action and in-house manufacturing of automobile parts.

In 1937, the second Sino-Japanese War broke out and it caused great challenges to the Japanese automobile industry including Toyota Motor Corporation.

[3] This law required Toyota Motor Corporation to provide trucks to the military and munitions industries with priority.

[4][3][2] He believed that the automobile business would definitely serve post-war Japan and continued to explore the technical issues despite such difficult times.

[2] He gave speeches about policy changes at Toyota Motor Corporation[3] and proceeded with talks for the recovery of the automobile industry.

In fact, Kiichiro valued relationship with dealerships, so he usually communicated with people directly and dealt with problems as soon as possible if they suggested.

Also, as a part of the occupation policy, the automobile company was contracted to repair United States military vehicles in Japan, which was a good opportunity for Toyota employees, including Kiichiro, to learn more about the structure of American cars.

[5] Kiichiro kept working hard to develop the Japanese automobile industry, even under the adverse circumstances of the postwar period.

Kiichiro continued to put a great deal of effort into passenger cars in terms of research, manufacturing and selling.

[7] In October 1947, the first Japanese passenger car after the war, the SA model with an S engine, was released[3][2] and was nicknamed "Toyopet.

Toyota Motor Corporation slowed the collection of sales proceeds due to the effects of inflation control and the setting of a single exchange rate.

From the background, GHQ decided to set a single exchange rate of 360 yen per dollar to stabilize the Japanese economy.

In addition, the price of materials for cars was risen,[2] and cash management was deteriorated considerably.

Furthermore, he made his best effort to save money for materials, but there was a limit, and in the end, there was a deficit of 22 million yen every month.

On March 31, 1950, four months after its establishment, Nihon Denso announced a company restructuring plan that included personnel reduction of 473 people.

The reason is, on October 25, 1949, GHQ issued a "Memorandum on the total removal of restrictions on the production and sale of automobiles".

[11] As a result, the production and sale of automobiles became free in principle,[3] but about the supply of production materials, the allocation and distribution system by the Ministry of International Trade and Industry remained, and the prices of materials and automobiles remained regulated.

On the other hand, since the company had promised not to lay off its personnel, the union naturally became furious and continued with extreme strikes.

The strikes continued daily for about two months after the declaration, which caused production in April and May to drop 70% from its previous average.

[13] Since the company would be destroyed as it was, on June 5, 1950, Kiichiro announced that he would resign as the president to take on this series of responsibilities.

[3] After retiring from the role of president, he created a laboratory at his home in Okamoto, Setagaya, Tokyo, and worked every day to design a small helicopter.