We parked the car in April 2020, the gas needle was at 7/16 of a tank, 33L or 7.31 gallons. We started the car a few times and went around the block. Since then we drove 2km, (1.2 miles), and the needle is slightly below 1/2, 39L or 8.58 gallons. We lost like 5.75 L (1.26 gallons). No drops from gas tank and it was okay before April 2020.

2007 Nissan Altima 2.5L 4 cyl, auto, 208774km (129726 miles)