Stevekeo makes a good point. Frankly, I have no blessed idea about which car is what class--there are so many makes and models, categories and subcategories that I've completely lost track. So, unless the car is not appropriate to my needs (and it generally is), I just take it. If for whatever reasons, I need something else, I just ask. Most of the time the folks at Hertz gold desk are accomodative.