Restless run, increased consumption

Greetings, someone has observed similar ? The engine jerks at the start, the consumption does not go below 10 liters during the ride, on the same track the consumption goes from 8-9 liters to 12 liters. Sailing did not run, while the ride runs it also felt restless, as if the whole road is no longer “glatt”. 2.0 GT-Line 2019er Yesterday only the start was restless, a few days earlier it was also ok – as soon as it gets cooler, that seems to be so, but it has already experienced, that then Everything went normal…