Performs three functions:
Uses gears to transmit power from the engine to the drive wheels. Selecting different gears changes the amount of power and torque transmitted.
On front engine rear-wheel or all-wheel-drive/four-wheel-drive vehicles, the propeller shaft transmits power from the transmission to the rear differential.
* Driven wheels will vary by model.
Receives power from the transmission and sends it to both the front and rear axles. Some models have driver selectable 2WD/4WD modes, some are full time 4WD and others are controlled automatically (AWD).
A transaxle is a transmission and differential combined into one unit, used in front-wheel drive and some all-wheel-drive vehicles.
Transmits power from the differential to the wheel.