The main features of a coup d'état include the illegal overthrow of a government, typically executed by a small group using force or the threat of force. Coups often occur rapidly, with military or political elites attempting to seize power without the consent of the governed. They may involve the arrest or removal of key leaders, suspension of constitutional order, and the imposition of authoritarian rule. The motivations behind a coup can range from political disagreements to dissatisfaction with the current government. Coups generally disrupt stability and can lead to significant social and political upheaval.