My overall average mileage over the first year driving ( about 8000 kms) is 8 litres/100 km. Best one trip highway was 6.3. Up until late fall the average mileage was actually under that but since the onset of the really cold winter weather it has risen marginally from around 7.8 to the current 8.. To answer one of your questions.. yes the economy fuel report you see is the mileage for that particular trip. One suggestion I would make is to not warm up the vehicle for a long time. These new vehicles don't need it and all you are doing is wasting your money. Run it for a minute and drive away. It will warm up faster just driving at a moderate speed. City mileage will be affected by how much stop and go you do. You can sit idling a long time in heavy city traffic. In my mind city driving is not a good indicator of gas mileage but each to their own.