How much/size luggage will you have?
We have a van and rented a van...a crappy dodge for both!
It has been myself, DH, our 3 kids (last ages of travel In April were 15, 13 & 11) and my mother. We each have a carry-on: kids their lo bean back packs, DH a back pack, me a LL Bean bag and my mother still travels like the 60s and had a ‘real’ (although a 2000’s version) carry on. Then we each have a suitcase that will fit in the over head (we do laundry). All the bags easily fit in the back, my kids may or may not keep their back packs with them for the ride to the airport and then the 20 min drive to my sisters in FL.