The toun o Koromo (挙母市), the predecessor o present day Toyota, wis a major producer o silk an prospered in the Mikawa region frae the Meiji Era through the Taishō period. As the demand for raw silk declined in Japan an abroad, the toun entered a period o gradual decline. The decline encouraged Kiichiro Toyoda, cousin o Eiji Toyoda, tae leuk for alternatives tae the family's automatic luim manufacturin business. The search led tae the foondin o wha became the Toyota Motor Corporation.
The toun gained the status o a ceety on 1 Mairch 1951. The toun chynged its name tae Toyota in 1959, an ane year later, became the sister ceety o anither automotive ceety, Detroit, Michigan. Toyota-shi is an aa twinned wi the Coonty o Derbyshire, Ingland, whaur Toyota operates a manufacturin plant.
On 25 Mairch 2005, Expo 2005 opened wi its main site in Nagakute an additional activity in Seto an Toyota. The Expo continued till 25 September 2005.