Abstract: A remotely controlled gas cap assembly includes a strip mounted around a fuel inlet of a fuel tank. The strip extends around the fuel inlet and has two spaced end plates which face each other. A transverse pivot pin is pivotally mounted on the two end plates. A link protruding from the pivot pin is attached to a bar having two sides each formed with an annular groove. The control assembly further has a remotely controllable pneumatic cylinder with a piston rod. The piston rod has a distal forked end which is comprised of two opposite branch rods. A roller is provided on an inner side of each branch rod which is received in a corresponding annular groove in each side of the bar and is movable along the annular groove. A gas cap is integrally formed with the link. A rubber block protrudes from an inner side of the gas cap. The gas cap is lifted to expose the fuel inlet when the piston rod is in a first position. The rubber block of the gas cap seals the fuel inlet when the piston rod is in a second position.