I've rented from Dollar Rent a Car many times, mainly because they are WAY cheaper than other rental agencies.  I suppose it is true that you get what you pay for...and you need to be on your game when dealing with the agents sometimes.

There is no rhyme or reason to the car you're going to get.  It's a crapshoot, so don't go in there with your heart set on a particular car, because you probably won't get it.

After several uneventful rentals with Dollar, I recently rented a mid-sized vehicle for a long weekend trip to Tennessee.  The reservation indicated a "Chrysler Sebring or similar". ...