I retopped fuel tank just now .I managed to calculate the average mpg; I am getting 18.57mpg! sounds low
But I think driving while AC is on and with many traffic lights in Abu Dhabi (here as soon as the light turns green the race starts where cars reach the speed of 50mph in no time before stopping in the next traffic light 1 mile down the road and if lucky you find it green). You have no choice but participate in the race because the cars behind you and around you are mainly v8 SUV and BMW...etc who are anxious to reach the next traffic light when it is still green!
so ~18mpg I guess is not bad for performance driving