Definition
Manual, automatic, dual-clutch, and CVT transmissions each trade engagement, efficiency, and complexity.
Gear ratio spacing affects acceleration, cruising rpm, and fuel economy.
Automotive Wiki
Drivetrain
Transmission
The gearbox selecting gear ratios between engine and drive wheels.
Related terms
- ClutchA friction device connecting and disconnecting engine power to the transmission.
- DifferentialA gearbox allowing drive wheels to rotate at different speeds while turning.
- DriveshaftA rotating shaft transmitting torque from transmission to differential in RWD an…
- Limited-Slip DifferentialA differential that limits speed difference between left and right wheels under …
- Final Drive RatioThe ring-and-pinion ratio multiplying torque before it reaches the wheels.
- Torque ConverterA fluid coupling in automatic transmissions multiplying torque at low speed.
Category: Drivetrain · Updated August 31, 2026