A matsayin fitilar wutsiya mai kyau, dole ne ta kasance da waɗannan halaye:
(1) Babban ƙarfin haske da kuma rarrabawar ƙarfin haske mai ma'ana;
(2) Lokacin tashi mai sauri mai haske;
(3) Tsawon rai, babu kulawa, ƙarancin amfani da makamashi;
(4) Ƙarfin jurewa mai ƙarfi;
(5) Kyakkyawan girgiza da juriya ga tasiri.
A halin yanzu, tushen hasken da ake amfani da shi a cikin fitilun wutsiyar motoci galibi fitilun incandescent ne. Bugu da ƙari, wasu sabbin hanyoyin haske sun bayyana, kamar diode mai fitar da haske (LED) da fitilun neon.