How do you open the gas cap door on a 2013 Nissan Sentra?

To open the gas cap door on a 2013 Nissan Sentra, locate the gas cap release lever inside the vehicle, usually found on the driver's side near the floor. Pull the lever, which will unlock and pop open the gas cap door on the exterior of the car. You can then simply push on the gas cap door to open it fully and access the fuel filler.