There are a few things you need to know before buying a car in Hawaii. First, the state has a sales tax of 6.9% and there is also a $2,500 emissions tax. Second, the state has no driver’s license or registration requirements, so you can buy a car without any trouble. Third, the state has an extensive network of dealerships and you can find one near you by using the dealership’s website or by calling them. Finally, be sure to research the vehicle’s prices and features before making your purchase.