Dollar Rent a Car and Thrifty Car Rental, charges roughly 20 percent more
Also in San Francisco, Dollar Thrifty Automotive Group, the parent company of Dollar Rent a Car and Thrifty Car Rental, charges roughly 20 percent more for the Prius than for other economy or compact cars. Hertz charges about $5 a day extra for its Green Collection, which includes 3,400 Priuses. The company says the fee covers the cost involved in making certain these cars can be reserved by make and model.