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.



The gas pedal, loud pedal, or just plain "gas," whatever you call it, it's a control for how much power the engine produces. Less throttle means less power, and vice versa.

See Also:
Pressure Plate
Diesel Engine
Throw-out Bearing
Gear Ratio
Front-Wheel Drive
Ball Joint
Passing Gear

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: