CADILLAC, MI—BorgWarner Thermal Systems Inc., a manufacturer of thermal technology for combustion, hybrid and electric vehicles, is expanding its assembly plant here. The $11.2 million project is expected to create 30 jobs.

TELFORD, TN—A South Korean auto parts supplier will locate its first U.S. assembly plant here.

DETROIT—Lear Corp. plans to invest $48 million to build a new automotive seat assembly operation here that could create hundreds of new manufacturing jobs.

SPRINGFIELD, TN—Tier 1 automotive supplier Martinrea International Inc. is investing $40 million to expand its assembly plant here. The project is expected to create 97 new jobs.

BESSEMER, AL—Automotive supplier Valeo North America will invest $5 million to open a new assembly plant here, creating 70 jobs.

LONE OAK, GA—KB Autosys, a manufacturer of brake pads, will invest $38 million to build its first U.S. assembly plant here, creating 180 jobs.

ELIZABETHTOWN, KY—Automotive supplier Metalsa is adding 300 new jobs at its assembly plant here to meet increased demand for the company’s signature product: vehicle frames for light- and heavy-weight trucks.

CALHOUN, GA—TEKLAS, a Turkish manufacturing company and supplier of parts for electric vehicles, is investing $6.5 million to open its first North American assembly plant and headquarters here.

WEST POINT, GA—A South Korean auto parts supplier will invest more than $240 million to build a transmission assembly plant here.