Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.

Back

Overdrive

An optional gear that allows the drive wheels to turn faster than the engine. It allows for better fuel efficiency during high speed highway driving.



See Also:
Oil Pump
Out-of- road
Lubrication System
Throw-out Bearing
Clutch Pedal
Crankshaft
Supercharger
Drivetrain

Diagnose Your Car's Problem

Engine won't start? Weird sound? Strange smoke? Got something going on with your car but not sure what it is? The easy to use DriverSide Diagnostic Tool is here to help you figure it out.



Enter Zip: