Wing vs spoiler

wing vs spoiler

An automotive airfoil (wing) is shaped like an upside-down airplane wing — it deflects airflow upward to generate down-force on the rear of the vehicle.

A spoiler is an obstruction to localized airflow that improves the overall airflow around a vehicle. Basically, you’re adding a barrier to a region of undesirable air behavior so the air will flow somewhere else.

A detailed explanation at this link

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