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 burning or 'explosion' of the air/fuel mixture within the engine's combustion chambers. This is what creates the power that moves your car so effortlessly.

See Also:
Lean Fuel Mixture
Automatic Choke
Intake Manifold
Accelerator Pump
Fuel Pump
Exhaust Gases
Air Cleaner Intake

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: