You mean your A2 is a 1.4i Petrol and your consumption was 4,63 L/100km ??I just came back from vacation, I was at the seaside.
I drove 540km(335 miles) with 25 liters(6.6 gal.) of Petrol.
I am very satisfied with the Petrol consumption
And preferably all the way downhill335 miles from 25 litres is an incredible return !! I have just had my A2 serviced and got 320ish miles from 32 litres. I guess if I were doing all motorway milage than i may be able to get the figures that you are quoting but I would have to be driving with a very very light foot, nothing over 3000 revs