I fly into Vegas once a year to make a trip to Utah to visit friends.  I rent a car each time but this was my first experience with Dollar and will probably be my last.  Yes, they came in the low end with the rates but still I was under the impression most rental cars were 'new'.   The car I had was 2 years old and the filthiest rental car, I've ever had.  The seats and steering wheels were sticky with soda spills.  The car also had a strange odor.  But worse, a couple of times along my trip the car sputtered but seemed to run ok.  I told the guy when I turned the car in about the sputtering but he seemed unconcerned.  The rental wound up costing twice the price quoted due to all the added fees and a mandatory insurance but that seems to be the case no matter what rental agency I use.