Consumption XC60 Diesel

Moin people, after the cold season my consumption has reduced from approx. 9.5-9.7 liters to approx. 8.5. I am a bit harder with the winter more consumption, the old XC60 also had a SH and the consumption was always at 8.5 liters. The new models have this additional heater. Can this thing make up so much. The new steering wheel heating can be only slightly, right? All in all I find the winter consumption a little too high, but the comfort lets say hello 😉 On the 17th go d he winter tires down, let’s see what might matter.