Good to know. It of course creates a risk and makes planning difficult when you don't know what size of car you will receives. In our case everything worked out, but there is no way we would have fit four people and the luggage into a Beetle.

The rate description does mention the number of people and amount of luggage that can fit into a a car of a particular category http://www.budget.com/budgetWeb/html...rs/medium.html, but I guess this is nothing one can rely on.