Q. I would like to know if it would be OK to buy a car during the 3 weeks and take delivery after Tisha b’Av.

A. Igrois Moishe’s (O.C. 3, 80) opinion is that if the car is a pleasure vehicle, one should avoid acquiring it during the 3 weeks, as he has to pronounce the brocho of Sheheheyonu (or Hatov Vehameitiv), when taking possession. However if its primary use is as a business vehicle, like a truck or van, it would be permitted. Darchei Hoiroho (Bein Hametzorim 14) permits buying a car for a family man until Rosh Chodesh. (see also Ribabos Efroim 3,3).

Horav Shlomo Miller’s opinion is that if one takes delivery of the vehicle after Tisha B’av it is permitted until the nine days begin, as no brocho will be recited yet.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a