An active wing apparatus (100) configured to be attached to a boot lid of a motor vehicle, the apparatus (100) comprising a wing assembly (120) configured to reversibly deploy in a first direction from a stowed condition to a deployed condition, the apparatus (100) further comprising anchor means (113L,113R) configured releasably to couple the apparatus (100) to a structural member being a portion of the vehicle body (50B) other than the boot lid, when the apparatus transitions from the stowed to the deployed condition.