I am averaging about 48, but considering that I am doing mostly motorway driving at the moment, I would have expected that to be higher. It seems that no matter how hard I try, I can't break 50 over the tank.
I don't know how you record your MPG, if I am honest, if I was doing most motorway miles I would expect something in the 50's.
I record each tank of fuel, I notice with the Golf they've moved away from the system where you have settings 1 and 2 on your DIS between the dials and you can look at MPG since start, since refuel, average etc.
James