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 process of rebuilding or replacing all of the major components of an old, tired engine. Can be much cheaper than a new car, but it should be done by a mechanic who is truly qualified, lest your vehicle turns into a money pit.

See Also:
Short Circuit
Free Pedal Play
Maintenance Tune-up

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: