Hello together, now it’s finally time for me, I’m about to treat myself to my first Audi 😉 Because of my family with 2 children and always luggage it’s supposed to be an A6 Avant. Since we drive quite a lot (about 25,000 km a year) I will definitely use a TDI. Also a switchcar should be, because my wife and also myself is just switching when driving a car a lot fun. Unfortunately I can between the two TDI engines with 1.9l with 96 kW pump We drive around 60% motorway, about 30% city traffic and the rest we spend on the country road. We want to move quickly in the city as well as on the country road and the highway, consume as little diesel as possible and very important, have a motor that is very stable, robust and very reliable. Also an acceleration of say times speed 160 km/h to speed 190 km/h should not exactly at the snail speed If the 1.9l PD engine is more susceptible than the 2.5l TDI or better, the 2.5l TDI is more robust, durable and less vulnerable than the 1.9l PD. What about the driving performance? Both are nominally equally strong with 310 NM. Why does the 2.5l TDI not convert its more KW into NM? Where are the more KW? The PD engine reaches its maximum torque at 1900 At around the 2.5 TDI, its 310 NM reaches 1400 – 3600. How does the difference in practice make itself felt? When and where does the 2.5l TDi have its advantages over the 1.9l PD? Where are the strengths and weaknesses of the individual machines????? What about fuel consumption? Can one assume in practice that the 2.5l TDI consumes about 1.5 liters more than the 1.9l PD?? How big is the difference between the two engines in the quiet running and noise development in the vehicle? Do you notice a difference? How do the maintenance costs of the two vehicles differ. the 2.5l TDI also expensive for regular maintenance than the 1.9l PD? These are many questions at once, but I am grateful for every tip and every hint. Since it will be my first diesel I am still very inexperienced and unreliable in this respect. I don’t want to regret my purchase. Since the search function has been deactivated here, I can’t really look for my answers. Many thanks already to you all!! As said, I am for every tip p, every experience report and every opinion grateful. Unfortunately I have here only the possibility to drive the 2.5l machine with the Multitronic. Therefore I lack any comparison possibility. Greeting Wuppi