What is Spoiler?
A body panel at the trailing edge of a car that manages airflow to reduce lift and drag, rather than generating large downforce.
A spoiler is an aerodynamic device mounted close to the body, usually along the trailing edge of a trunk lid, hatch, or roof. Its job is in the name: it spoils the airflow moving over the car, disrupting it in a controlled way to reduce lift and often to cut aerodynamic drag as well.
Because a spoiler works by managing air near the bodywork rather than acting as an airfoil in clean air, its precise shape matters less than a wing. Most production cars that carry anything on the back have a spoiler, not a wing, and a well-integrated one improves high-speed stability without the driver ever noticing it.
Spoilers are frequently confused with wings. The distinction is functional: a spoiler reduces lift and drag by controlling airflow, while a wing actively generates downforce and adds drag in the process.
