BLUE SPRINGS, MS--Toyota Motor Corp. is investing $170 million at its assembly plant here to build the 12th-generation Corolla sedan, creating 400 jobs in the next year. The small car is moving to a new platform known as Toyota New Global Architecture, and production lines will be replaced as part of the investment. 

Toyota says the plans would bring its total investment into the plant to more than $1 billion since 2007.  The company is also building an assembly plant in Alabama to produce the Corolla as part of a joint venture with Mazda. The redesigned Corolla hatchback coming this summer is built outside North America because of its low volume.

Toyota has moved the Camry and Avalon to the new architecture at its plant in Georgetown, KY, and is moving the Lexus ES to another platform, GA-K, a luxury version of TNGA.