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.



You may hear that your valves are "out of spec." Maybe your alignment isn't "in specification." Basically this means that something isn't how the factory manufacturered it, and it may be causing problems.

See Also:
Lube Job
Lube Grease
Free Pedal Play
Jumper Cables
Cotter Pin

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: