NU Car Rentals generally follows a full-to-full fuel policy. This means that customers are required to pick up their rental vehicle with a full tank of gas and return it with a full tank as well. This policy is often preferred by many renters as it allows them to only pay for the fuel they actually use during their rental period. When picking up the vehicle, customers should ensure that they review the fuel level noted in their rental agreement. If, for any reason, the vehicle is returned without a full tank, NU Car Rentals may charge for refueling at a rate that can exceed local gas prices. To avoid any additional fees, it is advisable for customers to fill up the gas tank before returning the vehicle. For the most accurate information regarding the fuel policy, it may be helpful to check the current web page of NU Car Rentals or refer to the rental agreement received at the time of booking.