The cost to import a car from the USA depends greatly on where you are buying the car in the USA, generally purchasing closer to the 2 Major Centres of New York or Los Angeles will reduce the cost of shipping. Los Angeles is generally the most economical as it is geographically closer to NZ offering faster transit times. Taxes are a large consideration to cost i.e. a depot to depot import of a 1969 Ford Mustang from Los Angeles to Auckland maybe as little as USD$2985.00 for shipping and arrival fees however depending on your situation and what value you bought the vehicle for you could be up for thousands more in taxes. You also need to be sure that the vehicle has the original title or you will not be able to comply it in New Zealand. Its important to engage with a freight forwarder like rocket freight before buying a vehicle from the USA to ensure you meet all necessary requirements for import.