Hello together. I drive an Audi 80 Avant B4 Built 93 2.6E automatic. Now my problem: with a full tank I only get (!!) 550 km far on the highway. You can imagine how it is then in the city. I was aware that it consumes a lot, but so much? Can that be? I heard that the thermostat influences fuel consumption, or if it is broken. Strangely enough, my temperature indicator only goes occasionally. Or is that just the temperature feel I hope you can help me. Maybe you’ll call me your consumption in your car.