I have used Dollar twice: once in Hawaii and once in Boston. Both times they tried to get me to pay more to upgrade to a bigger car. In Hawaii, they tacked on a $1 gas charge because, they said, the nearest gas station was 9 miles away and it would cost that much in gas to drive there.

In Boston I had the worst car rental experience of my life with Dollar. Picking up the car took 45 minutes while they had me fill out endless forms, tried to get me to buy everything they were selling, tried to get me to upgrade by implying it would be a comp upgrade then telling me it would cost (5 times) more, insulting the car I had rented...

It only takes one customer service experience like that to lose my business forever.

Besides, only Hertz has Neverlost!