Jumps bad, high fuel consumption

Hello Meisters, I have an Audi 80 B4 2.3E Automatic. At the moment I have the following problems: In the morning, sometimes afterwards, it starts very badly. I almost have to give it a kick to start. In addition, he currently needs 12 liters of on-board computer (overland). What can that be? Can this possibly be related to the Lambda probe? Would be very happy if someone could help me. Thank you!