Toyota West Virginia has started production of the fifth generation hybrid transaxle.
Assembly is a result of a US$300m investment at the plant announced in 2021 and 2022.
The latest hybrid transaxle is used for Camry and Corolla Cross models made in the US.
Since 2021, Toyota has announced new investment of $18.6bn into its US manufacturing operations to support electrification.
Toyota West Virginia has seen $2bn spent and assembles engines and drivetrain components for the North American operations. It is the only Toyota plant in North America to build the new hybrid transaxle.