Rates in New York City are around $65-$100 day and $225-$300 a week for an economy car with air-conditioning, automatic transmission, and unlimited mileage. This includes the state tax on car rentals, which is 13.62%. Rental costs are lower just outside New York City, specifically in such places as Hoboken, New Jersey, and Yonkers, New York. The Yellow Pages are also filled with a profusion of local car-rental agencies, some renting secondhand vehicles. If you're traveling during a holiday period, make sure that a confirmed reservation guarantees you a car.