Fair enough.. But still a significant real world difference. EPA (USA) tests aren't really real world and they don't just drive the cars. Well they drive them

Fair enough.. But still a significant real world difference. EPA (USA) tests aren't really real world and they don't just drive the cars. Well they drive them on a dyno on a preset pattern (see the picture in the link). https://www.fueleconomy.gov/feg/how_tested.shtml https://www.fueleconomy.gov/feg/how_tested.shtml they measure emissions to estimate fuel consumption.