Hotwire offers rental cars in the following categories: economy, compact, midsize, standard, full-size, premium, luxury and convertible cars, as well as minivans, and sport-utility vehicles (SUVs). Vehicle availability varies by agency and location; if the car type you book is not available, you'll receive an upgrade at no additional charge.

As with most car rental bookings, the exact make and model of car cannot be selected when you make your booking on Hotwire. Each car rental agency carries different makes and models within each car type, and they are continually updating their fleets.