I'd say that most of my mileage is taken up with 2 mile journeys, Grandkids to School and the weekly supermarket trips. The engine barely gets warm and I always have the aircon running, add the use of electrics including lights and wipers as it's rarely stopped raining recently, then low 20's in a petrol auto is about what I'd reasonably expect. The cat rarely gets hot so the engine revs also tend to be on the high side when on tick over, unfortunately this increase in revs is intended to heat up the cat quicker and reduce pollutants unfortunately it also increases my fuel consumption. There is also a sport mode on the gearbox which holds the gears longer but I never use this, problem is my using the kickdown also increases the fuel consumption, perhaps I should start using sport mode rather than kickdown.