Spoilers

Spoilers are often fitted to race and high-performance sports cars, although they have become common on passenger vehicles, as well. Some spoilers are added to cars primarily for styling purposes and have either little aerodynamic benefit or even make the aerodynamics worse. Although the most recognizable spoiler is the wing spoiler , there are actually many different types of spoilers. A wing spoiler is an airfoil suspended above the body of the vehicle.
A lid spoiler (commonly trunk lid spoiler , lip spoiler , or boot lid spoiler ) is often a ridge of plastic or metal attached directly to the top of the trunk lid.
A roof spoiler is a small ridge of plastic or metal attached to the very back of the roof, usually just above the rear window.
A splitter is a spoiler attached to the front bumper, very close to the road surface, sometimes known as a "front spoiler" or on stock or stock-appearing cars as an "air dam."