Moving a transmission into a numerically lower gear ratio. This is done to multiply torque for acceleration, to maintain power when climbing a steep grade, or to utilize engine braking when decelerating.
Heard on the job
Downshift into third before you hit the corner so you have power ready at the apex.
Also heard as
- drop a gear
Related terms
Engine braking
A deceleration technique that slows a vehicle by letting the drivetrain drag against the engine's internal resistance.
Gear change
The mechanical act of shifting a vehicle transmission from one ratio to another.
Kickdown
A forced downshift in an automatic transmission triggered by fully depressing the accelerator.
Redline
To operate an engine at its maximum safe rotational speed.
Money shift
A disastrous accidental downshift at high speed that forces the engine past its redline.