Typically, NU Car Rentals requires a credit card to complete the rental transaction. This is standard practice in the car rental industry because a credit card offers a more secure method for the company to hold a deposit for any potential damages or additional fees that may arise during the rental period. However, some locations may offer flexibility, allowing customers to use a debit card or other payment methods, but this might come with specific requirements. Customers should be prepared to show proof of insurance or other identification, and there may be certain restrictions regarding the types of vehicles that can be rented. For the most accurate and updated information regarding accepted payment methods at specific locations, it is advisable to check the current web page of NU Car Rentals, where terms and options are outlined clearly.