Is it compulsory to travel in an uncovered vehicle for Umra Mufradah, as finding an uncovered vehicle after Meeqat is difficult? And does it make a difference if the Umrah is done by night or by day?
It is not permissible for men during the state of Ehraam (Hajj or Umra) to travel in a covered vehicle during day time or when it is raining. This is according to all the scholars. Many scholars including Ayatullah Sistani say that it is permissible for men to travel in covered vehicle during night if there is no rain.
Women can travel in covered vehicle any time.
Wassalam