demo

function Car(brand, horsepower, price) {
    return {
        brand,
        horsepower,
        price,
        fuel: 75,

        get reduceFuel() {
            return this.fuel;
        },
        set reduceFuel(liters) {
            this.fuel -= liters;
        },
    }
}

let myCar = Car('Audi', 313, '37000$');

myCar.reduceFuel = 10;
console.log(myCar.reduceFuel);