Under 20 to the gallon though
I drive my 4.6 enthusiastically and I get 20 plus as a minimum.
Mine was a 1978 carb model....it was difficult to get 20mpg except on a long run then i could manage 22/23.
However, who cares, it would pull away from rest uphill in 4th.
And even just ticking over it made you fall in love with it immediately. It went to Germany when I sold it.
Oh, and I used to have to disconnect the oil breather to get it through the mot........
But love is love after all......
Nick