Automotive Glossary

Automotive Glossary

Browse the glossary using this index

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The tendency of a vehicle to drift away from the steered course when being driven. Usually associated with low or uneven tyre pressures or tight steering joints.
Entry link: Wander

Wankel Engine

Rotary engine using a three-cornered rotor in a trochoidal chamber. Invented by Felix Wankel.
Entry link: Wankel Engine


Twisting or bending distortion.
Entry link: Warpage


The legal rights given by manufacturers to cover possible defects occurring during a specified time or mileage.
Entry link: Warranty

Wash Primer

A primer that forms an anti-corrosive chemical film when applied on a bare metal surface. More commonly known as etching or self-etch primer.
Entry link: Wash Primer


Flat circular plate with a hole in it. Used to spread the load of a nut or bolt.
Entry link: Washer

Waste Gate

Control valve in the exhaust gas flow through a turbocharger.
Entry link: Waste Gate

Water Jacket

Part of the cylinder block and head of an engine that encloses the cavity through which cooling water flows.
Entry link: Water Jacket

Water Pump

(1) Pump that circulates the water of an engine's cooling system. Also circulating pump. (2) Any pump for delivering water under pressure, as for screen washing, etc.
Entry link: Water Pump

Water Spotting

A condition caused by water droplets evaporating on a finish before it has thoroughly dried or cured, which results in a dulling of the gloss in localised spots.
Entry link: Water Spotting

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