In checking out EPA mileage for a car purchase for my wife, I noticed that EPA website has revised their criteria for establishing average mileage, not only for 2008 models but for years going back to 1985. Takes into account driving habits and use of air conditioning. Here is XF coupe---old and new.....

http://www.fueleconomy.gov/feg/calcu...umn=1&id=20464