Out of curiosity I wanted to ask questions like exactly how your BC indicates the average consumption. I have only a 3 tank filling “experience” but notice that it is each about 0.3 liters below my calculated consumption. In general I notice how low the consumption of the T4 is. I expected with +/- 10 liters with mixed driving mode and occasionally kick. I did not have it for long but regret the purchase in no case. My ’93 Mondeo Mk1 with 1.8 liter engine also allowed 7.5 – 8.5 liters … and there it was much more comfortable to do…. here my ‘bordbook’:http://www.spritmonitor.de/de/detailview/159407.html -> will try to put this into my signature…