Get the most from a test-drive
Check out the interior and cargo space
When you get back to the dealership, note any blind spots or visibility issues you had while driving. Are these deal breakers? Then get out and sit in back without adjusting the seats. Can you fit behind yourself? Does your head hit the roof? Look at cupholders and cubbies to determine whether storage is adequate. This is also the time to open all the doors, pop the trunk and fold down the seats to test out all the stuff you dragged along. Does the trunk lid or hatch open on its own, or do you have to do all the lifting? How easy is it to close? Practice loading and unloading all the stuff you brought along not only to make sure it fits but to make sure everything is easy and comfortable to access.