Powertrain

Powertrain is a word to describe the parts of a car that generate power and deliver that power to the ground to propel the car forward.

In regular cars this includes the engine, gearbox, drive shaft(s), differential(s), and the wheels.

In electric and hybrid vehicles the powertrain also includes the battery pack and electric motor as well.

The powertrain differs to the drivetrain in that it includes the engine, whereas the drivetrain only includes the components that deliver the power from the engine to the wheels.