* Better fuel economy: Lower engine RPMs mean less fuel consumption.
* Quieter operation: The engine runs smoother and quieter at lower RPMs.
* Reduced wear and tear: Lower engine stress translates to longer engine life.
When overdrive is *disengaged*, the transmission will typically use a lower gear ratio, providing more power for acceleration or climbing hills. This is helpful for situations requiring more torque, such as towing or driving up steep inclines. You might see an "OD OFF" indicator light on the dashboard when overdrive is disengaged.