@Turbothinghy this is my driving style as well. I own Linea mjd emotion 2015 and get around 14 kmpl in city with ac in Pune. I encounter very little bumper to bumper traffic though. On highways I get around 18 kmpl with ac with some spirited driving. I am yet to achieve the 20kmpl figure in my highway drives. Maybe I might not with my driving style. @PradeepM, thanks for the tips. Will surely try out in the next few days.