Audi A8 1995–1997 Transponder KeyD2 Audi A8 1995–1997 Remote KeyD2 Audi A8 1997–2002 Remote KeyD2 Audi A8 1997–2002 Remote KeyD2 Audi A8 2002–2010 Remote KeyD3 Audi A8 2002–2010 Smart KeyD3 Audi A8 2010–2017 Smart KeyD4 Audi A8 2017–2026 Smart KeyD5